Dr David Williams

Dr David Williams

Researcher, Diatoms

Department: Life Sciences
Division: LS Division of Diversity and Informatics
Contact: email
Phone: 0207 942 5114
Diatom Pages
Systematics & Biogeography
https://www.researchgate.net

Specialisms

Cladistics, Diatom biogeography, Diatom systematics, Diatom taxonomy, Phytotaxa

Summary

I am a diatom systematist--taxonomist. My research is divided more or less equally between empirical studies on the systematics and biogeography of diatoms (especially ancient lakes and circum-Pacific distributions) and theoretical studies related to advances in cladistic (systematic) theory. My main interests are diatom phylogeny, systematics and biogeography. During the last decade or so I have concentrated my efforts on the role fossils have in determining the evolutionary relationships in diatoms.

Qualifications

Degrees

PhD, London University, United Kingdom, 1991 - 1994

MSc, University of Westminster, United Kingdom, 1980 - 1982

BSc, London University, United Kingdom, 1973 - 1976

Highlighted publications

Rieppel O, Williams DM, Ebach MC (2013) Adolf Naef (1883-1949): On Foundational Concepts and Principles of Systematic Morphology. Journal of the History of Biology, 46 (3) : 445 - 510. doi: 10.1007/s10739-012-9338-4

Mooi RD, Williams DM, Gill AC (2011) Numerical cladistics, an unintentional refuge for phenetics-a reply to Wiley et al. Zootaxa, 17 - 28.

Williams DM, Kociolek JP (2011) An overview of diatom classification with some prospects for the future, In: The Diatom World, Sebach J, Kociolek JP (Eds). null : 47 - 91.

Williams DM, Ebach MC (2010) Perspective: Molecular Systematics and the ‘Blender of Optimization’: Is There a Crisis in Systematics?. Systematics and Biodiversity, 8 (4) : doi: 10.1080/14772000.2010.530303

Williams DM, Knapp S (2010) Beyond cladistics: the branching of a paradigm. University of California Press : Berkeley.

Williams DM, Ebach MC (2007) The Foundations of Comparative Biology.[Preface by Professor Gareth Nelson]. Kluwer Academic-Springer :

Publications

Liu BING, Williams DAVIDM, Huang BANGQIN (2015)

Gyrosigma rostratum sp. nov. (Bacillariophyta) from the low intertidal zone, Xiamen Bay, southern China

. Phytotaxa, 203 (3) : 254 - 254. doi: 10.11646/phytotaxa.203.3.4

Blanco LanzaS, Williams DAVIDM (2015)

Corrections to the nomenclature of genus Diatoma (Bacillariophyta: Fragilariaceae)

. Phytotaxa, 202 (3) : 225 - 225. doi: 10.11646/phytotaxa.202.3.7

Peng YUMEI (2014) Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China. Phytotaxa, 186 (2) : 61 - 61. doi: 10.11646/phytotaxa.186.2.1

Williams DM (2014) The diatom genus Tetracyclus (Fragilariaceae, Bacillariophyta) from Chile. Phytotaxa, 178 (2) : 151 - 151. doi: 10.11646/phytotaxa.178.2.7

Ebach MALTEC, Williams DAVIDM (2014) Reading Trees. Zootaxa, 3814 (2) : 297 - 297. doi: 10.11646/zootaxa.3814.2.10

Riaux-gobin C, Compere P, Romero OE, Williams DM (2014) Cocconeis pinnata W. Gregory ex Greville (Bacillariophyta): Lectotypification and an emended description after examination of type material and South Pacific specimens. Phytotaxa, 156 : 81 - 99.

Williams DM (2014) ‘There are two kinds of light — the glow that illuminates, and the glare that obscures’ (James Thurber).. The Systematist, 36 : 23 - 23.

Ebach MC, Williams DM (2013) ‘E quindi uscimmo a riveder le stelle’. Cladistics, 29 : 227 - 227. doi: 10.1111/cla.12004

Ebach MC, Williams DM, Vanderlaan TA (2013) Implementation as theory, hierarchy as transformation, homology as synapomorphy. Zootaxa, 3641 (5) : 587 - 594. doi: 10.11646/zootaxa.3641.5.7

Hamilton PB, Williams DM, Sterrenburg FAS (2013) Some notes on locating specimens in the microscope. Diatom Research, 28 (4) : 517 - 518. doi: 10.1080/0269249x.2013.821426

Pavlov A, Levkov Z, Williams DM, Edlund MB (2013) Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes. Phytotaxa, 90 (1) : 1 - 53. doi: 10.11646/phytotaxa.90.1.1

Rieppel O, Williams DM, Ebach MC (2013) Adolf Naef (1883-1949): On Foundational Concepts and Principles of Systematic Morphology. Journal of the History of Biology, 46 (3) : 445 - 510. doi: 10.1007/s10739-012-9338-4

Tuji A, Williams DM (-1) Fragilaria vaucheriae - intermedia species complex. Journal of the National Museum of Tokyo (Botany),

Vanderlaan TA, Ebach MC, Williams DM, Wilkins JS (2013) Defining and redefining monophyly: Haeckel, Hennig, Ashlock, Nelson and the proliferation of definitions. Australian Systematic Botany, 26 (5) : 347 - 355. doi: 10.1071/sb13031

Gomes DF, Caldas O, Da SilvaEM, Gell PA, Williams DM (2012) Father Zimmermann (1871-1950): the first Brazilian diatomist. Diatom Research, 27 (3) : 177 - 188. doi: 10.1080/0269249x.2012.698646

Jarvis C, Williams DM (2012) From the Beginning to the End: The Keepers of Botany, 1836-2012. 4 - 13.

Karthick B, Williams DM (2012) The International Code for Nomenclature for algae, fungi and plants - a significant rewrite of the International Code of Botanical Nomenclature. Current Science, 102 :

Levkov Z, Williams DM (2012) Checklist of diatom (Bacillariophyta) from Lake Ohrid and Lake Prespa (Macedonia), and their watersheds. Phytotaxa, 45 :

Levkov Z, Williams DM (2012) Fifteen new diatom (Bacillariophyta) species from Lake Ohrid, Macedonia. Phytotaxa, 30 : 1 - 41.

Nagumo T, Matsuoka T, Tanaka J, Williams DM (2012) Research on the diatom slides of Wallich housed in Natural History Museum, UK. Bulletin of the Nippon Dental University, 42 : 12 - 15.

Sterrenburg FAS, Hamilton P, Williams DM (2012) Universal coordinate method for locating light-microscope specimens. Diatom Research, 27 (2) : 91 - 94. doi: 10.1080/0269249x.2012.688493

Williams DM, Ebach MC (2012) Confusing homologs as homologies: A reply to "On homology". Cladistics, 28 (3) : 223 - 224. doi: 10.1111/j.1096-0031.2011.00387.x

Williams DM (2012) Diatoma moniliforme: Commentary, relationships and a valid name. Bieheft Nova Hedwigia, 141 :

Williams DM, Jarvis C, Seberg O, Vane-wright RI (2011) Chris Humphries (1947-2009): botanist, cladist and biogeographer: an appreciation. Cladistics, 27 (3) : 223 - 229. doi: 10.1111/j.1096-0031.2011.00359.x

Christenhusz MJM, Baker W, Chase MW, Fay MF, Lehtonen S, Van EeB, Von KonratM, Lumbsch T, Renzaglia KS, Shaw J, Williams DM, Zhang ZQ (2011) The first anniversary of Phytotaxa in the International Year of Biodiversity. Phytotaxa, 15 : 1 - 8.

Ebach MC, De CarvalhoMR, Williams DM (2011) Opening Pandora's Molecular Box. Zootaxa, 60 - 64.

Ebach MC, Williams DM (2011) A Devil's Glossary for Biological Systematics. History and Philosophy of the Life Sciences, 33 : 249 - 257.

Ebach MC, Williams DM (2011) Commentary and perspectives: A Devil's glossary for biological systematics. History and Philosophy of the Life Sciences, 33 : 249 - 257.

Jüttner I, Cox EJ, Kelly M, Mann DG, Williams DM (2011) Freshwater diatom flora of the British Isles. The Phycologist, 80 :

Mooi RD, Williams DM, Gill AC (2011) Numerical cladistics, an unintentional refuge for phenetics-a reply to Wiley et al. Zootaxa, 17 - 28.

Patterson C, Williams DM, Gill AC (2011) Adventures in the fish trade. Zootaxa, 118 - 136.

Williams DM (2011) Additions to and comments on the bibliography of Robert Ross. Diatom Research, 26 (4) : 317 - 318. doi: 10.1080/0269249x.2011.630895

Williams DM (2011) Synedra, Ulnaria: definitions and descriptions - a partial resolution. Diatom Research, 26 (2) : 149 - 153. doi: 10.1080/0269249x.2011.587646

Williams DM, Ebach MC (2011) "Phenetics" and its application. Cladistics, 28 (3) : 229 - 230. doi: 10.1111/j.1096-0031.2011.00383.x

Williams DM, Gill AC (2011) Editorial. ‘Adventures in the fish trade’ by Colin Patterson, [edited and with an introduction by David M. Williams & Anthony C. Gill.]. Zootaxa, 2946 : 118 - 136.

Williams DM, Kociolek JP (2011) An overview of diatom classification with some prospects for the future, In: The Diatom World, Sebach J, Kociolek JP (Eds). null : 47 - 91.

Ebach MC, Williams DM (2010) Review - Systematics and Biogeography: Cladistics and Vicariance.-Gareth Nelson and Norman I. Platnick. Columbia University Press, 1981. xi+567 pp. ISBN 0-231-04574-3 (hardback).. Systematic Biology, 59 : 612 - 614.

Li Y, Williams DM, Metzeltin D, Kociolek JP, Gong Z (2010) Tibetiella pulchra gen. nov. et sp. nov., a new freshwater epilithic diatom (Bacillariophyta) from River Nujiang in Tibet, China. Journal of Phycology, 46 :

Reid G, Williams DM (2010) Notes on the genus Semiorbis Patrick with a description of a new species. Diatom Research, 25 : 355 - 365.

Tuji A, Williams DM, Sims PA, Tanimura Y (-1) An Illustrated Catalogue of Type Specimens from the H.M.S. Challenger Voyage in Castracane’s Slide Collection in the Natural History Museum, London. JOINT HAECKEL and EHRENBERG PROJECT: Reexamination of the Haeckel and Ehrenberg Microfossil Collections as a Historical and Scientific Legacy [Text to accompany exhibition catalogue], In: National Museum of Nature and Science Monographs, Tanimura Y, Aita Y (Eds). null : Tokyo. 7 - 11.

Williams DM, Kociolek JP (2010) Towards a comprehensive diatom classification and phylogeny (Bacillariophyta). Plant Ecology and Evolution, 143 (3) : 265 - 270. doi: 10.5091/plecevo.2010.401

Williams DM (2010) Amphorotia hispida.. http://www.nhm.ac.uk/nature-online/species-of-the-day/collections/collecting/amphorotia-hispida/index.html :

Williams DM (2010) The diatom genus Tetracyclus (Bacillariophyta): A Checklist for the Diatom Genus Tetracyclus Ralfs (Bacillariophyta), with Revised Descriptions, Types, Distributions and Bibliography, a resource for diatomists, stratigraphers and (palaeo)biogeographers.. http://tetracyclus.myspecies.info/ :

Williams DM (2010) Numerical Taxonomy and the Port of Last Resort.. The Systematist, 32 : 11 - 12.

Williams DM (2010) Review - Plant Taxonomy: The Systematic Evaluation of Comparative Data, 2nd edition.-Tod F. Stuessy, editor. Columbia University Press, 2009. (hardback) 565 pp. ISBN 978-0-231-14712-5. Systematic Biology, 59 : 608 - 610.

Williams DM, Brodie J (2010) (170) Proposal to eliminate the Latin requirement for the valid publication of names of non-fossil algae.. Taxon, 59 :

Williams DM, Ebach MC (2010) Perspective: Molecular Systematics and the ‘Blender of Optimization’: Is There a Crisis in Systematics?. Systematics and Biodiversity, 8 (4) : doi: 10.1080/14772000.2010.530303

Williams DM, Knapp S (2010) Beyond cladistics: the branching of a paradigm. University of California Press : Berkeley.

Williams DM, Kociolek JP (2010) Classifications of Convenience: The Meaning of Names. Diatom Research, 25 : 213 - 216.

Williams DM, Morales EM (2010) Pseudostaurosira medliniae, a new name for Pseudostaurosira elliptica (Gasse) Jung et Medlin. Diatom Research, 25 : 225 - 226.

Williams DM, Ebach MC (2009) What, exactly, is cladistics? Re-writing the history of systematics and biogeography. Acta Biotheoretica 57 : 249 - 268. doi: 10.1007/s10441-008-9058-5

Ebach MC, Williams DM (2009) How objective is a definition in the subspecies debate?. 457 : null :

Karthick B, Toyoda K, Ramachandra TV, Williams DM (2009) A note on the identity of Ceratoneis iyengarii Gonzalves & Gandhi (Fragilariophyceae, Bacillariophyta). Diatom Research, 24 : 233 - 236.

Stachura-suchoples K, Williams DM (2009) A hypothesis on the origin of continuous cribra species in Thalassiosira sensu lato: Fossil and molecular evidence. Phycologia, 48 :

Stachura-suchoples K, Williams DM (2009) Description of Conticribra tricircularis, a new genus and species of Thalassiosirales, with a discussion on its relationship to other continuous cribra species of Thalassiosira Cleve (Bacillariophyta) and its freshwater origin. European Journal of Phycology, 44 : 477 - 486.

Stachura-suchoples K, Williams DM, Jahn R (2009) On extinct, freshwater taxa in the genus Thalassiosira with observations on Thalassiosira species from Pliocene deposit in Oregon, U.S.A.. Diatomededelingen, 33 :

Toyoda K, Tanaka J, Williams DM (2009) A new brackish water diatom, Achnanthes secretitaeniata sp. nov. from Japan. Journal of Japanese Botany, 84 : 19 - 26.

Tuji A, Williams DM (-1) Type Examination of Japanese Diatoms Described by Friedrich Meister (1913) from Lake Suwa. Bulletin of the National Science Museum, series B (Botany), 33 : 69 - 79.

Williams DM (2009) Chris Humphries (1947-2009) [Obituary]. Frontiers in Biogeography, 1 : 29 - 31.

Williams DM (2009) What does endemicity mean in micro-organisms? Program & Abstracts. 1st Meeting of Biosyst EU. Systematics 2009,

Williams DM (2009) The identity of Tetracyclus constrictus (Bacillariophyceae) and a description of Tetracyclus bradburyii, a new Miocene species. Annales de Paléontologie, 95 : 37 - 51.

Williams DM (2009) Systema naturae: Letters to Linnaeus, In: Letters to Linnaeus, Knapp S, Wheeler QD (Eds). Linnean Society :

Williams DM, Chudaev DA, Lomonosov MV, Gololobova MA (2009) Punctastriata glubokoensis spec. nov., a new species of ‘Fragilarioid’ diatom from lake Glubokoe, Russia. Diatom Research, 24 : 479 - 485.

Williams DM, Kociolek JP (2009) Towards a comprehensive diatom classification: The role of fossils. Van de Vijer B, Coquyt C (Eds). Diatom Taxonomy in the 21st Century. Symposium in honour of Henri Van Heurck, 23-26 August 2009, 45 : Scripta Botanica Belgica : Meise, Belgium.

Williams DM, Reid G (2009) New species in the genus Colliculoamphora Williams & Reid with commentary on species concepts in diatom taxonomy. Beihefte zur Nova Hedwigia (Eugene Stoermer Festschrift), 135 : 185 - 200.

Ebach MC, Gill AC, Williams DM (2008) Reply, a future for astrobiogeography. Astrophysics and Space Science, 317 :

Ebach MC, Gill AC, Williams DM (2008) The pitfalls of astrobiogeography. Astrophysics and Space Science, 317 : 143 - 144.

Ebach MC, Morrone JJ, Williams DM (2008) A new cladistics of cladists. Biology and Philosophy, 23 : 153 - 156.

Ebach MC, Morrone JJ, Williams DM (2008) An Outline of the Foundations of Systematics and Biogeography. History and Philosophy of the Life Sciences, 29 : 21 - 24.

Ebach MC, Williams DM, Gill AC (2008) O Cladistics, Where Art Thou?. Cladistics, 24 :

Reid G, Williams D, Kusber WH, Jahn R (2008) Some commentary on molecules and morphology, species and higher taxa in diatoms, with a note on the relationships of the genus Cistula Cleve.. Proceedings of the 1st Central European Diatom Meeting 2007, Botanic Garden and Botanical Museum Berlin-Dahlem : Freie Universität Berlin.

Reid G, Williams DM (2008) The diatom slide collection and bibliography of the Reverend Richard Fraser Bastow (c. 1888-1 October 1960). Diatom Research, 23 : 117 - 128.

Toyoda K, Williams DM, Tanaka J, Nagumo T (2008) Nomenclatural problem on Conferva armillaris Müller (Bacillariophyta). Bulletin of the Nippon Dental University, 37 : 65 - 70.

Tuji A, Williams DM (2008) Examination of type material of Fragilaria mesolepta Rabenhorst and two similar, but distinct, taxa. Diatom Research, 23 : 503 - 510.

Tuji A, Williams DM (2008) Typification and type examination of Synedra familiaris Kütz and related taxa. Diatom Research, 24 : 25 - 29.

Tuji A, Williams DM (2008) Examination of types in the Fragilaria pectinalis - capitellata species complex. Witkowski A (Eds). Proceedings of the 19th International Diatom Symposium, Bristol: Biopress Limited : 125 - 139.

Williams DM (2008) Buffon’s orders. Times :

Williams DM (2008) Studies on species of the genus Tetracyclus (Bacillariophyta, Diatomaceae), with recognition of a ‘cruciform’ sub-group, and comments on their paleogeography. Micropaleontology, 53 : 1 - 9.

Williams DM (2008) New names for three fossil species in the genus Tetracyclus Ralfs from Shangu County, Inner Mongolia, P.R. China. Diatom Research, 23 : 249 - 253.

Williams DM (2008) The Diatoms of Lake Baikal and the Space Invaders of Siberia. The British Phycological Society Annual Jubilee Meeting, Programme and Abstracts,

Williams DM (2008) What, exactly, is congruence? ‘araphid’ diatom classification and multiple datasets. 20th International Diatom Symposium,

Williams DM, Ebach MC (2008) Evolutionary theory: don’t skimp on teaching its history. Nature, 453 :

Williams DM, Ebach MC, Wheeler QD (2008) Beyond Belief: The Steady Resurrection of Phenetics. London LSO (Eds). Beyond Cladistics, A Festschrift for Chris Humphries,

Williams DM, Reid G (2008) The type material of Peronia fibula: morphology, systematics and relationships. Witkowski A (Eds). Proceedings of the 19th International Diatom Symposium, Biopress Limited, Bristol :

Toyoda K, Williams DM (2007) Diatom Types and herbaria. Aquabiology, 169 : 124 - 128.

Valdecasas AG, Williams DM, Wheeler QD (2007) ‘Integrative taxonomy’ then and now: a response to Dayrat(2005). Biological Journal of the Linnean Society, 93 : 211 - 216.

Williams DM (2007) Paleogeographic impact of a newly described 'cruciform' sub-group of Tetracyclus (Bacillariophyta, Diatomaceae). Micropaleontology, 53 (5) : 421 - 429. doi: 10.2113/gsmicropal.53.5.421

Williams DM (2007) Whatever Happened To Cladistics?. The Systematist, 28 : 19 - 21.

Williams DM (2007) Diatom phylogeny: Fossils, molecules and the extinction of evidence. Compte Rendu Palevol, 6 : 505 - 514.

Williams DM (2007) Richard Owen (1804-1892), In: Great Natural Historians, Huxley R (Eds). Thames and Hudson/ The Natural History Museum. :

Williams DM (2007) Jean Louis Rodolphe Agassiz (1807-1873), In: Great Natural Historians, Huxley R (Eds). Thames and Hudson/ The Natural History Museum. : London.

Williams DM (2007) Classification and diatom systematics: The past, the present and the future, In: Unravelling the Algae, Brodie J, Lewis J (Eds). CRC Press :

Williams DM (-1) Ernst Haeckel and Louis Agassiz: Trees that Bite and their Geographical Dimension, In: Biogeography in a Changing World, Ebach MC, Tangey R (Eds). CRC Press : Boca Raton. 1 - 59.

Williams DM, Ebach MC (2007) Heterology - The Shadows of a Shade.. Cladistics, 23 : 84 - 89.

Williams DM, Ebach MC (2007) The Foundations of Comparative Biology.[Preface by Professor Gareth Nelson]. Kluwer Academic-Springer :

Williams DM, Kociolek JP (2007) Pursuit of a natural classification of diatoms: History, monophyly and the rejection of paraphyletic taxa.. European Journal of Phycology, 42 : 313 - 319.

Cox EJ, Williams DM (2006) Systematics of naviculoid diatoms (Bacillariophyta): A preliminary analysis of protoplast and frustule characters for family and order leve classification. Systematics & Biodiversity, 4 (4) : 385 - 399. doi: 10.1017/S1477200006001940

Cox ER, Sims PA, Williams DM (2006) [Obiturary] Robert Ross (1912-2005). Diatom Research, 21 : 479 - 488.

Ebach MC, Williams DM (2006) Perspectives: Zangerl and the Zeitgeist. History and Philosophy of the Life Sciences, 28 : 51 - 54.

Ebach MC, Williams DM, Morrone JJ (2006) Paraphyly is bad taxonomy. Taxon, 55 : 831 - 832.

Ebach MC, Williams DM, Morrone JJ (2006) Getting Rid of Origins. Rivista di Biologia/Biology Forum, 99 : 360 - 365.

Levkov Z, Williams DM (2006) Two new species of Diatoma from Lakes Ohrid and Prespa, Macedonia. Diatom Research, 21 : 281 - 296.

Reid G, Williams DM (2006) Science updates. 42 : null : 15 - 16.

Reid G, Williams DM (2006) News: World’s oldest lake contains world’s newest genus. http://www.nhm.ac.uk/about-us/news/2006/apr/news_7901.html. null :

Reid G, Williams DM (2006) Morphology and the relationships of the genus Semiorbis in the Eunotiales. 19th International Diatom Symposium, Abstract book,

Tanimura Y, Tsuji A, Sakai T, Aita Y, Suzuki N, Ogane K, Young J, Williams DM, Lazarus D, Breidbach O, Bach T (2006) Joint Haeckel and Ehrenberg Project - A taxonomic reexamination of the Haeckel and Ehrenberg microfossil collections as a historical and scientific legacy. Research Report of the Museum Director General’s Support Program in 2004 -2006, The National Science Museum, Tokyo. 1 - 24.

Toyoda K, Cox EJ, Sims PA, Williams DM (2006) (1718) Proposal to conserve Achnanthes brevipes (Bacillariophyceae) against A. adnata, A. baccillarioides and A. dubia, with a conserved type. Taxon, 55 : 527 - 528.

Toyoda K, Tanaka J, Williams DM (2006) Morphological notes on the marine diatom Achnanthes longipes C.A. Agardh from Japanese material. Diatom Research, 22 : 27 - 33.

Toyoda K, Williams DM, Tanaka J, Nagumo T (2006) Morphological investigations of the frustule, perizonium and initial valves of the freshwater species, Achnanthes crenulata Grunow (Bacillariophyceae). Phycological Research, 54 : 173 - 182.

Tuji A, Williams DM (2006) Examination of the type material of Synedra rumpens = Fragilaria rumpens Bacillariophyceae. Phycological Research, 54 : 99 - 103.

Tuji A, Williams DM (2006) The taxonomy and distribution of Denticula kuetzingii Grunow, observed in Izu Peninsula, Japan. Memoirs of the National Science Museum, 42 : 7 - 14.

Tuji A, Williams DM (2006) Type examination of the freshwater centric diatom Aulacoseira pusilla (F. Meister) Tuji et Houki. Diatom, 22 : 70 - 73.

Tuji A, Williams DM (2006) Typification of Conferva pectinalis O.F.Müll. (Bacillariophyceae) and the identity of the type of an alleged synonym, Fragilaria capucina Desm. Taxon, 55 : 193 - 199.

Tuji A, Williams DM (2006) The taxonomy of Fragilaria vaucheriae and related species. 19th International Diatom Symposium, Abstract book,

Williams DM (2006) Darwin and diatoms. Science First Hand, 5 :

Williams DM (2006) Review of : Ron Amundson, 2005. The Changing Role of the Embryo in Evolutionary Thought. Roots of Evo-Devo. Cambridge University Press, Cambridge. [Book review]. The Systematist, 27 : 15 - 19.

Williams DM (2006) Otto Kleinschmidt (1870-1954), Biogeography and the ‘origin’ of species: From Formenkreis to Progression Rule. Biogeographia, 1 : 3 - 9.

Williams DM (2006) Some notes on the classification of Fragilaria, Synedra and their subgroups. Nova Hedwigia, Beiheft, 130 : 17 - 34.

Williams DM, Ebach MC (2006) The data matrix. Geodiversitas, 28 : 409 - 420.

Williams DM, Khursevich GK, Fedenya SA, Flower RJ (2006) The fossil record in Lake Baikal: Comments on the diversity and duration of some benthic species, with special reference to the genus Tetracyclus, In: Proceedings of the 18th International Diatom Symposium, Poland, 2004, Witkowski A (Eds). BioPress Ltd. : Bristol.

Williams DM, Reid G (2006) Dealing with large taxonomic groups: Diatoms species and geography, In: Towards the Tree of Life: The Taxonomy and Systematics of Large and Species Rich Taxa, Hodkinson TR, Parnell JAN (Eds). CRC Press : Boca Raton. 305 - 322.

Williams DM, Reid G (2006) Fossils and the tropics, the Eunotiaceae (Bacillariophyta) expanded: The Upper Eocene fossil diatom Eunotia reedi and the Recent marine diatom Amphora reichardtiana from the tropics. European Journal of Phycology, 41 : 147 - 154.

Williams DM, Reid G (2006) Diatom Biogeography and Water Babies: The search for meaning among the Protists. Diatom Research, 21 : 457 - 462.

Williams DM, Reid G (2006) Amphorotia nov. gen., a new genus in the family Eunotiaceae (Bacillariophyceae), based on Eunotia clevei Grunow in Cleve et Grunow 1880. Diatom Monographs, 6 :

Williams DM, Reid G (2006) Examination of Type Material of Peronia fibula with Comments on its Relationships. 19th International Diatom Symposium, Abstract book,

Ebach MC, Humphries CJ, Newman RA, Williams DM, Walsh SA (2005) Assumption 2: opaque to intuition?. Journal of Biogeography, 32 : 781 - 787.

Ebach MC, Williams DM (2005) Molecular systematics is not genetics. Rivista di Biologia/ Biology Forum, 98 : 373 - 376.

John DM, Reid G, Williams MD (2005) Microalgae, In: The Emirates A Natural History, Hellyer P, Aspinal S (Eds). null : 167 - 167.

John DM, Reid G, Williams DM (2005) Microalgae, In: The Emirates A Natural History, Hellyer P, Aspinall S (Eds). Trident Press :

Reid G, Williams DM (2005) News: Museum receives a unique collection of diatoms. http://www.nhm.ac.uk/about-us/news/2005/nov/news_7080.html. null :

Reid G, Williams DM (2005) Phylum: Bacillariophyta (Diatoms), In: The Emirates A Natural History, Hellyer P, Aspinall S (Eds). Trident Press :

Toyoda K, Cox EJ, Sims PA, Williams DM (2005) The typification of Achnanthes Bory based on Echinella stipitata Lyngbye, with an account of the morphology and fine structure of Lyngbye’s species. Diatom Research, 20 (2) : 375 - 386.

Toyoda K, Nagumo T, Tanaka J, Williams DM (2005) Taxonomy and fine structure of a marine diatom Achnanthes grunowii (Grunow) nom. nov.. Japanese Journal of Botany, 80 : 1 - 8.

Williams DM (2005) Ernst Haeckel and Louis Agassiz: Trees that bite and their geographic dimension. Programme & Abstracts of the 5th Biennial Conference of the Systematics Association,

Williams DM (-1) Supertrees, Components and Three-item Data, In: Supertrees and their uses, Bininda-Emonds O (Eds). Kluwer Press : 389 - 408.

Williams DM, Ebach MC (2005) Drowning by Numbers: A new view on numerical phylogenetics. Botanical Reviews, 71 : 355 - 387.

Williams DM, Ebach MC, Wheeler Q (2005) 150 reasons for paraphyly. Taxon, 54 :

Williams DM, Reid G (2005) The Sino-Siberian distribution of Eunotia clevei and its relatives, from Lake Baikal to the Mekon Delta: the union of taxonomy, biogeography and ecology. Memoirs of the California Academy of Sciences, 56 : 179 - 187.

Ebach MC, Williams DM (2004) Classification. Taxon, 53 : 791 - 794.

Ebach MC, Williams DM (2004) Congruence and language. Taxon, 53 : 113 - 118.

Forey PL, Williams DM (2004) Introduction, In: Milestones in Systematics, WILLIAMS DM, FOREY PL (Eds). Taylor & Francis/CRC Press : Boca Raton. 290 pp.

Skabichevskaya NA, Kuzmina AE, Strelnikova NI, Potapova MG, Williams DM (2004) Alexander Pavlovich Skabichevsky (November 23, 1904 - May 5, 1990): An obituary and bibliography. Diatom Research, 18 : 385 - 398.

Toyoda K, Williams DM (2004) Description of Achnanthes Bory (Bacillariopheceae) based on Kützing's type slides and materials 1: New morphological information on Achnanthes brevipes var. intermedia (Kützing) Cleve. Diatom, 20 : 159 - 165.

Toyoda K, Sims PA, Cox EJ, Williams DM (2004) The typification of Achnanthes Bory based on Echinella stipitata Lyngbye with an account of the morphology and fine structure of Lyngbye’s species. 18th International Diatom Symposium, Abstracts,

Williams DM: (2004) The type material of Tetracyclus japonicus (Petit) Temp. & H. Perag. and Tetracyclus eckhardii Ehrenb. (Bacillariophyceae). Cryptogamie Algologie, 24 : 333 - 340.

Williams DM (2004) Biogeography and diatom evolution. The living diatom cell,

Williams DM (2004) The palaeontological argument revisted: cladistics old and new. 4th Biennial Conference of the Systematics Association, Programme & Abstracts,

Williams DM (2004) Morphology and molecules in freshwater ‘araphid’ diatoms: Areas of agreement and disagreement, and a way forward. 18th International Diatom Symposium, Abstracts,

Williams DM (2004) Homology and Homologues, Cladistics and Phenetics: 150 Years of Progress, In: Milestones in Systematics, WILLIAMS DM, FOREY PL (Eds). Taylor & Francis/CRC Press : Boca Raton. 290 pp. 191 - 224.

Williams DM, Ebach MC (2004) The Reform of palaeontology and the rise of biogeography - 25 Years after ‘Ontogeny, Phylogeny, Paleontology and the Biogenetic law’ (Nelson 1978). Journal of Biogeography, 31 : 1 - 27.

Williams DM, Forey PL (2004) Milestones in Systematics. Taylor & Francis/CRC Press : Boca Raton.

Williams DM, Metzeltin D (2004) A new species of Synedra Ehrenb. with comments on auxospore and initial cell morphology. Diatom, 20 : 57 - 66.

Williams DM, Reid G (2004) The Sino-Siberian distribution of Eunotia clevei and its relatives, from Lake Baikal to Mekon delta: The union of Taxonomy, biogeography and ecology. Proceedings of the Ecology and Taxonomy workshop, Poland 2002. California Academy of Sciences,

Williams DM, Reid G (2004) Origin and diversity of the diatom genus Eunotia in Lake Baikal: Some preliminary considerations, In: Long Continental Records From Lake Baikal, Kashiwaya K (Eds). Kluwer Academic Publishers : 259 - 269.

Ebach MC, Humphries CJ, Williams DM (2003) Phylogenetic biogeography deconstructed. Journal of Biogeography, 30 : 1285 - 1296.

Nelson GJ, Williams DM, Ebach MC (2003) A Question of Conflict: Three Item and Standard Parsimony Compared. Systematics and Biodiversity, 1 : 145 - 149.

Reid G, Williams DM (2003) The morphology of the Gyrosigma balticum complex (Bacillariophyta). The Phycologist, 64 :

Reid G, Williams DM (2003) Systematics of the genus Gyrosigma (Bacillariophyta) including a description of three new species. Phycological Research, 51 : 126 - 142.

Reid G, Williams DM (2003) The Small, the Large and the Unknown: Dealing with diatom diversity. Fourth Biennial Conference of the Systematics Association, Abstracts, 14 - 15.

Williams DM, Humphries CJ (2003) Component Coding, Three-item coding and consensus methods. Systematic Biology, 52 : 255 - 259.

Williams DM, Humphries CJ (2003) Chapter 6. Homology and character evolution, In: Deep morphology: Toward a Renaissance of Morphology in Plant Systematics, Stuessy TF, Mayer V, Hörandl E (Eds). A.R.G. Gantner : Liechtenstein. 326+ix pp. 119 - 130.

Kitching IJ, Forey P, Williams DM (2000) Cladistics, In: Encyclopedia of Biodiversity, Levin S (Eds). Academic Press : San Diego. 677 - 692.

Kitching IJ, Forey PL, Humphries CJ, Williams DM (1998) Cladistics. Oxford University Press : Oxford. 228.

Forey PL, Humphries CJ, Kitching IJ, Scotland RW, Siebert DJ, Williams DM (1992) Cladistics: a practical course in systematics. Oxford University Press : Oxford. 191.

Introduction

Summary

I am a diatom systematist--taxonomist. My research is divided more or less equally between empirical studies on the systematics and biogeography of diatoms (especially ancient lakes and circum-Pacific distributions) and theoretical studies related to advances in cladistic (systematic) theory. My main interests are diatom phylogeny, systematics and biogeography. During the last decade or so I have concentrated my efforts on the role fossils have in determining the evolutionary relationships in diatoms.

Qualifications

Degrees

PhD, London University, United Kingdom, 1991 - 1994

MSc, University of Westminster, United Kingdom, 1980 - 1982

BSc, London University, United Kingdom, 1973 - 1976

Highlighted publications

Rieppel O, Williams DM, Ebach MC (2013) Adolf Naef (1883-1949): On Foundational Concepts and Principles of Systematic Morphology. Journal of the History of Biology, 46 (3) : 445 - 510. doi: 10.1007/s10739-012-9338-4

Mooi RD, Williams DM, Gill AC (2011) Numerical cladistics, an unintentional refuge for phenetics-a reply to Wiley et al. Zootaxa, 17 - 28.

Williams DM, Kociolek JP (2011) An overview of diatom classification with some prospects for the future, In: The Diatom World, Sebach J, Kociolek JP (Eds). null : 47 - 91.

Williams DM, Ebach MC (2010) Perspective: Molecular Systematics and the ‘Blender of Optimization’: Is There a Crisis in Systematics?. Systematics and Biodiversity, 8 (4) : doi: 10.1080/14772000.2010.530303

Williams DM, Knapp S (2010) Beyond cladistics: the branching of a paradigm. University of California Press : Berkeley.

Williams DM, Ebach MC (2007) The Foundations of Comparative Biology.[Preface by Professor Gareth Nelson]. Kluwer Academic-Springer :

Publications

Publications

Liu BING, Williams DAVIDM, Huang BANGQIN (2015)

Gyrosigma rostratum sp. nov. (Bacillariophyta) from the low intertidal zone, Xiamen Bay, southern China

. Phytotaxa, 203 (3) : 254 - 254. doi: 10.11646/phytotaxa.203.3.4

Blanco LanzaS, Williams DAVIDM (2015)

Corrections to the nomenclature of genus Diatoma (Bacillariophyta: Fragilariaceae)

. Phytotaxa, 202 (3) : 225 - 225. doi: 10.11646/phytotaxa.202.3.7

Peng YUMEI (2014) Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China. Phytotaxa, 186 (2) : 61 - 61. doi: 10.11646/phytotaxa.186.2.1

Williams DM (2014) The diatom genus Tetracyclus (Fragilariaceae, Bacillariophyta) from Chile. Phytotaxa, 178 (2) : 151 - 151. doi: 10.11646/phytotaxa.178.2.7

Ebach MALTEC, Williams DAVIDM (2014) Reading Trees. Zootaxa, 3814 (2) : 297 - 297. doi: 10.11646/zootaxa.3814.2.10

Riaux-gobin C, Compere P, Romero OE, Williams DM (2014) Cocconeis pinnata W. Gregory ex Greville (Bacillariophyta): Lectotypification and an emended description after examination of type material and South Pacific specimens. Phytotaxa, 156 : 81 - 99.

Williams DM (2014) ‘There are two kinds of light — the glow that illuminates, and the glare that obscures’ (James Thurber).. The Systematist, 36 : 23 - 23.

Ebach MC, Williams DM (2013) ‘E quindi uscimmo a riveder le stelle’. Cladistics, 29 : 227 - 227. doi: 10.1111/cla.12004

Ebach MC, Williams DM, Vanderlaan TA (2013) Implementation as theory, hierarchy as transformation, homology as synapomorphy. Zootaxa, 3641 (5) : 587 - 594. doi: 10.11646/zootaxa.3641.5.7

Hamilton PB, Williams DM, Sterrenburg FAS (2013) Some notes on locating specimens in the microscope. Diatom Research, 28 (4) : 517 - 518. doi: 10.1080/0269249x.2013.821426

Pavlov A, Levkov Z, Williams DM, Edlund MB (2013) Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes. Phytotaxa, 90 (1) : 1 - 53. doi: 10.11646/phytotaxa.90.1.1

Rieppel O, Williams DM, Ebach MC (2013) Adolf Naef (1883-1949): On Foundational Concepts and Principles of Systematic Morphology. Journal of the History of Biology, 46 (3) : 445 - 510. doi: 10.1007/s10739-012-9338-4

Tuji A, Williams DM (-1) Fragilaria vaucheriae - intermedia species complex. Journal of the National Museum of Tokyo (Botany),

Vanderlaan TA, Ebach MC, Williams DM, Wilkins JS (2013) Defining and redefining monophyly: Haeckel, Hennig, Ashlock, Nelson and the proliferation of definitions. Australian Systematic Botany, 26 (5) : 347 - 355. doi: 10.1071/sb13031

Gomes DF, Caldas O, Da SilvaEM, Gell PA, Williams DM (2012) Father Zimmermann (1871-1950): the first Brazilian diatomist. Diatom Research, 27 (3) : 177 - 188. doi: 10.1080/0269249x.2012.698646

Jarvis C, Williams DM (2012) From the Beginning to the End: The Keepers of Botany, 1836-2012. 4 - 13.

Karthick B, Williams DM (2012) The International Code for Nomenclature for algae, fungi and plants - a significant rewrite of the International Code of Botanical Nomenclature. Current Science, 102 :

Levkov Z, Williams DM (2012) Checklist of diatom (Bacillariophyta) from Lake Ohrid and Lake Prespa (Macedonia), and their watersheds. Phytotaxa, 45 :

Levkov Z, Williams DM (2012) Fifteen new diatom (Bacillariophyta) species from Lake Ohrid, Macedonia. Phytotaxa, 30 : 1 - 41.

Nagumo T, Matsuoka T, Tanaka J, Williams DM (2012) Research on the diatom slides of Wallich housed in Natural History Museum, UK. Bulletin of the Nippon Dental University, 42 : 12 - 15.

Sterrenburg FAS, Hamilton P, Williams DM (2012) Universal coordinate method for locating light-microscope specimens. Diatom Research, 27 (2) : 91 - 94. doi: 10.1080/0269249x.2012.688493

Williams DM, Ebach MC (2012) Confusing homologs as homologies: A reply to "On homology". Cladistics, 28 (3) : 223 - 224. doi: 10.1111/j.1096-0031.2011.00387.x

Williams DM (2012) Diatoma moniliforme: Commentary, relationships and a valid name. Bieheft Nova Hedwigia, 141 :

Williams DM, Jarvis C, Seberg O, Vane-wright RI (2011) Chris Humphries (1947-2009): botanist, cladist and biogeographer: an appreciation. Cladistics, 27 (3) : 223 - 229. doi: 10.1111/j.1096-0031.2011.00359.x

Christenhusz MJM, Baker W, Chase MW, Fay MF, Lehtonen S, Van EeB, Von KonratM, Lumbsch T, Renzaglia KS, Shaw J, Williams DM, Zhang ZQ (2011) The first anniversary of Phytotaxa in the International Year of Biodiversity. Phytotaxa, 15 : 1 - 8.

Ebach MC, De CarvalhoMR, Williams DM (2011) Opening Pandora's Molecular Box. Zootaxa, 60 - 64.

Ebach MC, Williams DM (2011) A Devil's Glossary for Biological Systematics. History and Philosophy of the Life Sciences, 33 : 249 - 257.

Ebach MC, Williams DM (2011) Commentary and perspectives: A Devil's glossary for biological systematics. History and Philosophy of the Life Sciences, 33 : 249 - 257.

Jüttner I, Cox EJ, Kelly M, Mann DG, Williams DM (2011) Freshwater diatom flora of the British Isles. The Phycologist, 80 :

Mooi RD, Williams DM, Gill AC (2011) Numerical cladistics, an unintentional refuge for phenetics-a reply to Wiley et al. Zootaxa, 17 - 28.

Patterson C, Williams DM, Gill AC (2011) Adventures in the fish trade. Zootaxa, 118 - 136.

Williams DM (2011) Additions to and comments on the bibliography of Robert Ross. Diatom Research, 26 (4) : 317 - 318. doi: 10.1080/0269249x.2011.630895

Williams DM (2011) Synedra, Ulnaria: definitions and descriptions - a partial resolution. Diatom Research, 26 (2) : 149 - 153. doi: 10.1080/0269249x.2011.587646

Williams DM, Ebach MC (2011) "Phenetics" and its application. Cladistics, 28 (3) : 229 - 230. doi: 10.1111/j.1096-0031.2011.00383.x

Williams DM, Gill AC (2011) Editorial. ‘Adventures in the fish trade’ by Colin Patterson, [edited and with an introduction by David M. Williams & Anthony C. Gill.]. Zootaxa, 2946 : 118 - 136.

Williams DM, Kociolek JP (2011) An overview of diatom classification with some prospects for the future, In: The Diatom World, Sebach J, Kociolek JP (Eds). null : 47 - 91.

Ebach MC, Williams DM (2010) Review - Systematics and Biogeography: Cladistics and Vicariance.-Gareth Nelson and Norman I. Platnick. Columbia University Press, 1981. xi+567 pp. ISBN 0-231-04574-3 (hardback).. Systematic Biology, 59 : 612 - 614.

Li Y, Williams DM, Metzeltin D, Kociolek JP, Gong Z (2010) Tibetiella pulchra gen. nov. et sp. nov., a new freshwater epilithic diatom (Bacillariophyta) from River Nujiang in Tibet, China. Journal of Phycology, 46 :

Reid G, Williams DM (2010) Notes on the genus Semiorbis Patrick with a description of a new species. Diatom Research, 25 : 355 - 365.

Tuji A, Williams DM, Sims PA, Tanimura Y (-1) An Illustrated Catalogue of Type Specimens from the H.M.S. Challenger Voyage in Castracane’s Slide Collection in the Natural History Museum, London. JOINT HAECKEL and EHRENBERG PROJECT: Reexamination of the Haeckel and Ehrenberg Microfossil Collections as a Historical and Scientific Legacy [Text to accompany exhibition catalogue], In: National Museum of Nature and Science Monographs, Tanimura Y, Aita Y (Eds). null : Tokyo. 7 - 11.

Williams DM, Kociolek JP (2010) Towards a comprehensive diatom classification and phylogeny (Bacillariophyta). Plant Ecology and Evolution, 143 (3) : 265 - 270. doi: 10.5091/plecevo.2010.401

Williams DM (2010) Amphorotia hispida.. http://www.nhm.ac.uk/nature-online/species-of-the-day/collections/collecting/amphorotia-hispida/index.html :

Williams DM (2010) The diatom genus Tetracyclus (Bacillariophyta): A Checklist for the Diatom Genus Tetracyclus Ralfs (Bacillariophyta), with Revised Descriptions, Types, Distributions and Bibliography, a resource for diatomists, stratigraphers and (palaeo)biogeographers.. http://tetracyclus.myspecies.info/ :

Williams DM (2010) Numerical Taxonomy and the Port of Last Resort.. The Systematist, 32 : 11 - 12.

Williams DM (2010) Review - Plant Taxonomy: The Systematic Evaluation of Comparative Data, 2nd edition.-Tod F. Stuessy, editor. Columbia University Press, 2009. (hardback) 565 pp. ISBN 978-0-231-14712-5. Systematic Biology, 59 : 608 - 610.

Williams DM, Brodie J (2010) (170) Proposal to eliminate the Latin requirement for the valid publication of names of non-fossil algae.. Taxon, 59 :

Williams DM, Ebach MC (2010) Perspective: Molecular Systematics and the ‘Blender of Optimization’: Is There a Crisis in Systematics?. Systematics and Biodiversity, 8 (4) : doi: 10.1080/14772000.2010.530303

Williams DM, Knapp S (2010) Beyond cladistics: the branching of a paradigm. University of California Press : Berkeley.

Williams DM, Kociolek JP (2010) Classifications of Convenience: The Meaning of Names. Diatom Research, 25 : 213 - 216.

Williams DM, Morales EM (2010) Pseudostaurosira medliniae, a new name for Pseudostaurosira elliptica (Gasse) Jung et Medlin. Diatom Research, 25 : 225 - 226.

Williams DM, Ebach MC (2009) What, exactly, is cladistics? Re-writing the history of systematics and biogeography. Acta Biotheoretica 57 : 249 - 268. doi: 10.1007/s10441-008-9058-5

Ebach MC, Williams DM (2009) How objective is a definition in the subspecies debate?. 457 : null :

Karthick B, Toyoda K, Ramachandra TV, Williams DM (2009) A note on the identity of Ceratoneis iyengarii Gonzalves & Gandhi (Fragilariophyceae, Bacillariophyta). Diatom Research, 24 : 233 - 236.

Stachura-suchoples K, Williams DM (2009) A hypothesis on the origin of continuous cribra species in Thalassiosira sensu lato: Fossil and molecular evidence. Phycologia, 48 :

Stachura-suchoples K, Williams DM (2009) Description of Conticribra tricircularis, a new genus and species of Thalassiosirales, with a discussion on its relationship to other continuous cribra species of Thalassiosira Cleve (Bacillariophyta) and its freshwater origin. European Journal of Phycology, 44 : 477 - 486.

Stachura-suchoples K, Williams DM, Jahn R (2009) On extinct, freshwater taxa in the genus Thalassiosira with observations on Thalassiosira species from Pliocene deposit in Oregon, U.S.A.. Diatomededelingen, 33 :

Toyoda K, Tanaka J, Williams DM (2009) A new brackish water diatom, Achnanthes secretitaeniata sp. nov. from Japan. Journal of Japanese Botany, 84 : 19 - 26.

Tuji A, Williams DM (-1) Type Examination of Japanese Diatoms Described by Friedrich Meister (1913) from Lake Suwa. Bulletin of the National Science Museum, series B (Botany), 33 : 69 - 79.

Williams DM (2009) Chris Humphries (1947-2009) [Obituary]. Frontiers in Biogeography, 1 : 29 - 31.

Williams DM (2009) What does endemicity mean in micro-organisms? Program & Abstracts. 1st Meeting of Biosyst EU. Systematics 2009,

Williams DM (2009) The identity of Tetracyclus constrictus (Bacillariophyceae) and a description of Tetracyclus bradburyii, a new Miocene species. Annales de Paléontologie, 95 : 37 - 51.

Williams DM (2009) Systema naturae: Letters to Linnaeus, In: Letters to Linnaeus, Knapp S, Wheeler QD (Eds). Linnean Society :

Williams DM, Chudaev DA, Lomonosov MV, Gololobova MA (2009) Punctastriata glubokoensis spec. nov., a new species of ‘Fragilarioid’ diatom from lake Glubokoe, Russia. Diatom Research, 24 : 479 - 485.

Williams DM, Kociolek JP (2009) Towards a comprehensive diatom classification: The role of fossils. Van de Vijer B, Coquyt C (Eds). Diatom Taxonomy in the 21st Century. Symposium in honour of Henri Van Heurck, 23-26 August 2009, 45 : Scripta Botanica Belgica : Meise, Belgium.

Williams DM, Reid G (2009) New species in the genus Colliculoamphora Williams & Reid with commentary on species concepts in diatom taxonomy. Beihefte zur Nova Hedwigia (Eugene Stoermer Festschrift), 135 : 185 - 200.

Ebach MC, Gill AC, Williams DM (2008) Reply, a future for astrobiogeography. Astrophysics and Space Science, 317 :

Ebach MC, Gill AC, Williams DM (2008) The pitfalls of astrobiogeography. Astrophysics and Space Science, 317 : 143 - 144.

Ebach MC, Morrone JJ, Williams DM (2008) A new cladistics of cladists. Biology and Philosophy, 23 : 153 - 156.

Ebach MC, Morrone JJ, Williams DM (2008) An Outline of the Foundations of Systematics and Biogeography. History and Philosophy of the Life Sciences, 29 : 21 - 24.

Ebach MC, Williams DM, Gill AC (2008) O Cladistics, Where Art Thou?. Cladistics, 24 :

Reid G, Williams D, Kusber WH, Jahn R (2008) Some commentary on molecules and morphology, species and higher taxa in diatoms, with a note on the relationships of the genus Cistula Cleve.. Proceedings of the 1st Central European Diatom Meeting 2007, Botanic Garden and Botanical Museum Berlin-Dahlem : Freie Universität Berlin.

Reid G, Williams DM (2008) The diatom slide collection and bibliography of the Reverend Richard Fraser Bastow (c. 1888-1 October 1960). Diatom Research, 23 : 117 - 128.

Toyoda K, Williams DM, Tanaka J, Nagumo T (2008) Nomenclatural problem on Conferva armillaris Müller (Bacillariophyta). Bulletin of the Nippon Dental University, 37 : 65 - 70.

Tuji A, Williams DM (2008) Examination of type material of Fragilaria mesolepta Rabenhorst and two similar, but distinct, taxa. Diatom Research, 23 : 503 - 510.

Tuji A, Williams DM (2008) Typification and type examination of Synedra familiaris Kütz and related taxa. Diatom Research, 24 : 25 - 29.

Tuji A, Williams DM (2008) Examination of types in the Fragilaria pectinalis - capitellata species complex. Witkowski A (Eds). Proceedings of the 19th International Diatom Symposium, Bristol: Biopress Limited : 125 - 139.

Williams DM (2008) Buffon’s orders. Times :

Williams DM (2008) Studies on species of the genus Tetracyclus (Bacillariophyta, Diatomaceae), with recognition of a ‘cruciform’ sub-group, and comments on their paleogeography. Micropaleontology, 53 : 1 - 9.

Williams DM (2008) New names for three fossil species in the genus Tetracyclus Ralfs from Shangu County, Inner Mongolia, P.R. China. Diatom Research, 23 : 249 - 253.

Williams DM (2008) The Diatoms of Lake Baikal and the Space Invaders of Siberia. The British Phycological Society Annual Jubilee Meeting, Programme and Abstracts,

Williams DM (2008) What, exactly, is congruence? ‘araphid’ diatom classification and multiple datasets. 20th International Diatom Symposium,

Williams DM, Ebach MC (2008) Evolutionary theory: don’t skimp on teaching its history. Nature, 453 :

Williams DM, Ebach MC, Wheeler QD (2008) Beyond Belief: The Steady Resurrection of Phenetics. London LSO (Eds). Beyond Cladistics, A Festschrift for Chris Humphries,

Williams DM, Reid G (2008) The type material of Peronia fibula: morphology, systematics and relationships. Witkowski A (Eds). Proceedings of the 19th International Diatom Symposium, Biopress Limited, Bristol :

Toyoda K, Williams DM (2007) Diatom Types and herbaria. Aquabiology, 169 : 124 - 128.

Valdecasas AG, Williams DM, Wheeler QD (2007) ‘Integrative taxonomy’ then and now: a response to Dayrat(2005). Biological Journal of the Linnean Society, 93 : 211 - 216.

Williams DM (2007) Paleogeographic impact of a newly described 'cruciform' sub-group of Tetracyclus (Bacillariophyta, Diatomaceae). Micropaleontology, 53 (5) : 421 - 429. doi: 10.2113/gsmicropal.53.5.421

Williams DM (2007) Whatever Happened To Cladistics?. The Systematist, 28 : 19 - 21.

Williams DM (2007) Diatom phylogeny: Fossils, molecules and the extinction of evidence. Compte Rendu Palevol, 6 : 505 - 514.

Williams DM (2007) Richard Owen (1804-1892), In: Great Natural Historians, Huxley R (Eds). Thames and Hudson/ The Natural History Museum. :

Williams DM (2007) Jean Louis Rodolphe Agassiz (1807-1873), In: Great Natural Historians, Huxley R (Eds). Thames and Hudson/ The Natural History Museum. : London.

Williams DM (2007) Classification and diatom systematics: The past, the present and the future, In: Unravelling the Algae, Brodie J, Lewis J (Eds). CRC Press :

Williams DM (-1) Ernst Haeckel and Louis Agassiz: Trees that Bite and their Geographical Dimension, In: Biogeography in a Changing World, Ebach MC, Tangey R (Eds). CRC Press : Boca Raton. 1 - 59.

Williams DM, Ebach MC (2007) Heterology - The Shadows of a Shade.. Cladistics, 23 : 84 - 89.

Williams DM, Ebach MC (2007) The Foundations of Comparative Biology.[Preface by Professor Gareth Nelson]. Kluwer Academic-Springer :

Williams DM, Kociolek JP (2007) Pursuit of a natural classification of diatoms: History, monophyly and the rejection of paraphyletic taxa.. European Journal of Phycology, 42 : 313 - 319.

Cox EJ, Williams DM (2006) Systematics of naviculoid diatoms (Bacillariophyta): A preliminary analysis of protoplast and frustule characters for family and order leve classification. Systematics & Biodiversity, 4 (4) : 385 - 399. doi: 10.1017/S1477200006001940

Cox ER, Sims PA, Williams DM (2006) [Obiturary] Robert Ross (1912-2005). Diatom Research, 21 : 479 - 488.

Ebach MC, Williams DM (2006) Perspectives: Zangerl and the Zeitgeist. History and Philosophy of the Life Sciences, 28 : 51 - 54.

Ebach MC, Williams DM, Morrone JJ (2006) Paraphyly is bad taxonomy. Taxon, 55 : 831 - 832.

Ebach MC, Williams DM, Morrone JJ (2006) Getting Rid of Origins. Rivista di Biologia/Biology Forum, 99 : 360 - 365.

Levkov Z, Williams DM (2006) Two new species of Diatoma from Lakes Ohrid and Prespa, Macedonia. Diatom Research, 21 : 281 - 296.

Reid G, Williams DM (2006) Science updates. 42 : null : 15 - 16.

Reid G, Williams DM (2006) News: World’s oldest lake contains world’s newest genus. http://www.nhm.ac.uk/about-us/news/2006/apr/news_7901.html. null :

Reid G, Williams DM (2006) Morphology and the relationships of the genus Semiorbis in the Eunotiales. 19th International Diatom Symposium, Abstract book,

Tanimura Y, Tsuji A, Sakai T, Aita Y, Suzuki N, Ogane K, Young J, Williams DM, Lazarus D, Breidbach O, Bach T (2006) Joint Haeckel and Ehrenberg Project - A taxonomic reexamination of the Haeckel and Ehrenberg microfossil collections as a historical and scientific legacy. Research Report of the Museum Director General’s Support Program in 2004 -2006, The National Science Museum, Tokyo. 1 - 24.

Toyoda K, Cox EJ, Sims PA, Williams DM (2006) (1718) Proposal to conserve Achnanthes brevipes (Bacillariophyceae) against A. adnata, A. baccillarioides and A. dubia, with a conserved type. Taxon, 55 : 527 - 528.

Toyoda K, Tanaka J, Williams DM (2006) Morphological notes on the marine diatom Achnanthes longipes C.A. Agardh from Japanese material. Diatom Research, 22 : 27 - 33.

Toyoda K, Williams DM, Tanaka J, Nagumo T (2006) Morphological investigations of the frustule, perizonium and initial valves of the freshwater species, Achnanthes crenulata Grunow (Bacillariophyceae). Phycological Research, 54 : 173 - 182.

Tuji A, Williams DM (2006) Examination of the type material of Synedra rumpens = Fragilaria rumpens Bacillariophyceae. Phycological Research, 54 : 99 - 103.

Tuji A, Williams DM (2006) The taxonomy and distribution of Denticula kuetzingii Grunow, observed in Izu Peninsula, Japan. Memoirs of the National Science Museum, 42 : 7 - 14.

Tuji A, Williams DM (2006) Type examination of the freshwater centric diatom Aulacoseira pusilla (F. Meister) Tuji et Houki. Diatom, 22 : 70 - 73.

Tuji A, Williams DM (2006) Typification of Conferva pectinalis O.F.Müll. (Bacillariophyceae) and the identity of the type of an alleged synonym, Fragilaria capucina Desm. Taxon, 55 : 193 - 199.

Tuji A, Williams DM (2006) The taxonomy of Fragilaria vaucheriae and related species. 19th International Diatom Symposium, Abstract book,

Williams DM (2006) Darwin and diatoms. Science First Hand, 5 :

Williams DM (2006) Review of : Ron Amundson, 2005. The Changing Role of the Embryo in Evolutionary Thought. Roots of Evo-Devo. Cambridge University Press, Cambridge. [Book review]. The Systematist, 27 : 15 - 19.

Williams DM (2006) Otto Kleinschmidt (1870-1954), Biogeography and the ‘origin’ of species: From Formenkreis to Progression Rule. Biogeographia, 1 : 3 - 9.

Williams DM (2006) Some notes on the classification of Fragilaria, Synedra and their subgroups. Nova Hedwigia, Beiheft, 130 : 17 - 34.

Williams DM, Ebach MC (2006) The data matrix. Geodiversitas, 28 : 409 - 420.

Williams DM, Khursevich GK, Fedenya SA, Flower RJ (2006) The fossil record in Lake Baikal: Comments on the diversity and duration of some benthic species, with special reference to the genus Tetracyclus, In: Proceedings of the 18th International Diatom Symposium, Poland, 2004, Witkowski A (Eds). BioPress Ltd. : Bristol.

Williams DM, Reid G (2006) Dealing with large taxonomic groups: Diatoms species and geography, In: Towards the Tree of Life: The Taxonomy and Systematics of Large and Species Rich Taxa, Hodkinson TR, Parnell JAN (Eds). CRC Press : Boca Raton. 305 - 322.

Williams DM, Reid G (2006) Fossils and the tropics, the Eunotiaceae (Bacillariophyta) expanded: The Upper Eocene fossil diatom Eunotia reedi and the Recent marine diatom Amphora reichardtiana from the tropics. European Journal of Phycology, 41 : 147 - 154.

Williams DM, Reid G (2006) Diatom Biogeography and Water Babies: The search for meaning among the Protists. Diatom Research, 21 : 457 - 462.

Williams DM, Reid G (2006) Amphorotia nov. gen., a new genus in the family Eunotiaceae (Bacillariophyceae), based on Eunotia clevei Grunow in Cleve et Grunow 1880. Diatom Monographs, 6 :

Williams DM, Reid G (2006) Examination of Type Material of Peronia fibula with Comments on its Relationships. 19th International Diatom Symposium, Abstract book,

Ebach MC, Humphries CJ, Newman RA, Williams DM, Walsh SA (2005) Assumption 2: opaque to intuition?. Journal of Biogeography, 32 : 781 - 787.

Ebach MC, Williams DM (2005) Molecular systematics is not genetics. Rivista di Biologia/ Biology Forum, 98 : 373 - 376.

John DM, Reid G, Williams MD (2005) Microalgae, In: The Emirates A Natural History, Hellyer P, Aspinal S (Eds). null : 167 - 167.

John DM, Reid G, Williams DM (2005) Microalgae, In: The Emirates A Natural History, Hellyer P, Aspinall S (Eds). Trident Press :

Reid G, Williams DM (2005) News: Museum receives a unique collection of diatoms. http://www.nhm.ac.uk/about-us/news/2005/nov/news_7080.html. null :

Reid G, Williams DM (2005) Phylum: Bacillariophyta (Diatoms), In: The Emirates A Natural History, Hellyer P, Aspinall S (Eds). Trident Press :

Toyoda K, Cox EJ, Sims PA, Williams DM (2005) The typification of Achnanthes Bory based on Echinella stipitata Lyngbye, with an account of the morphology and fine structure of Lyngbye’s species. Diatom Research, 20 (2) : 375 - 386.

Toyoda K, Nagumo T, Tanaka J, Williams DM (2005) Taxonomy and fine structure of a marine diatom Achnanthes grunowii (Grunow) nom. nov.. Japanese Journal of Botany, 80 : 1 - 8.

Williams DM (2005) Ernst Haeckel and Louis Agassiz: Trees that bite and their geographic dimension. Programme & Abstracts of the 5th Biennial Conference of the Systematics Association,

Williams DM (-1) Supertrees, Components and Three-item Data, In: Supertrees and their uses, Bininda-Emonds O (Eds). Kluwer Press : 389 - 408.

Williams DM, Ebach MC (2005) Drowning by Numbers: A new view on numerical phylogenetics. Botanical Reviews, 71 : 355 - 387.

Williams DM, Ebach MC, Wheeler Q (2005) 150 reasons for paraphyly. Taxon, 54 :

Williams DM, Reid G (2005) The Sino-Siberian distribution of Eunotia clevei and its relatives, from Lake Baikal to the Mekon Delta: the union of taxonomy, biogeography and ecology. Memoirs of the California Academy of Sciences, 56 : 179 - 187.

Ebach MC, Williams DM (2004) Classification. Taxon, 53 : 791 - 794.

Ebach MC, Williams DM (2004) Congruence and language. Taxon, 53 : 113 - 118.

Forey PL, Williams DM (2004) Introduction, In: Milestones in Systematics, WILLIAMS DM, FOREY PL (Eds). Taylor & Francis/CRC Press : Boca Raton. 290 pp.

Skabichevskaya NA, Kuzmina AE, Strelnikova NI, Potapova MG, Williams DM (2004) Alexander Pavlovich Skabichevsky (November 23, 1904 - May 5, 1990): An obituary and bibliography. Diatom Research, 18 : 385 - 398.

Toyoda K, Williams DM (2004) Description of Achnanthes Bory (Bacillariopheceae) based on Kützing's type slides and materials 1: New morphological information on Achnanthes brevipes var. intermedia (Kützing) Cleve. Diatom, 20 : 159 - 165.

Toyoda K, Sims PA, Cox EJ, Williams DM (2004) The typification of Achnanthes Bory based on Echinella stipitata Lyngbye with an account of the morphology and fine structure of Lyngbye’s species. 18th International Diatom Symposium, Abstracts,

Williams DM: (2004) The type material of Tetracyclus japonicus (Petit) Temp. & H. Perag. and Tetracyclus eckhardii Ehrenb. (Bacillariophyceae). Cryptogamie Algologie, 24 : 333 - 340.

Williams DM (2004) Biogeography and diatom evolution. The living diatom cell,

Williams DM (2004) The palaeontological argument revisted: cladistics old and new. 4th Biennial Conference of the Systematics Association, Programme & Abstracts,

Williams DM (2004) Morphology and molecules in freshwater ‘araphid’ diatoms: Areas of agreement and disagreement, and a way forward. 18th International Diatom Symposium, Abstracts,

Williams DM (2004) Homology and Homologues, Cladistics and Phenetics: 150 Years of Progress, In: Milestones in Systematics, WILLIAMS DM, FOREY PL (Eds). Taylor & Francis/CRC Press : Boca Raton. 290 pp. 191 - 224.

Williams DM, Ebach MC (2004) The Reform of palaeontology and the rise of biogeography - 25 Years after ‘Ontogeny, Phylogeny, Paleontology and the Biogenetic law’ (Nelson 1978). Journal of Biogeography, 31 : 1 - 27.

Williams DM, Forey PL (2004) Milestones in Systematics. Taylor & Francis/CRC Press : Boca Raton.

Williams DM, Metzeltin D (2004) A new species of Synedra Ehrenb. with comments on auxospore and initial cell morphology. Diatom, 20 : 57 - 66.

Williams DM, Reid G (2004) The Sino-Siberian distribution of Eunotia clevei and its relatives, from Lake Baikal to Mekon delta: The union of Taxonomy, biogeography and ecology. Proceedings of the Ecology and Taxonomy workshop, Poland 2002. California Academy of Sciences,

Williams DM, Reid G (2004) Origin and diversity of the diatom genus Eunotia in Lake Baikal: Some preliminary considerations, In: Long Continental Records From Lake Baikal, Kashiwaya K (Eds). Kluwer Academic Publishers : 259 - 269.

Ebach MC, Humphries CJ, Williams DM (2003) Phylogenetic biogeography deconstructed. Journal of Biogeography, 30 : 1285 - 1296.

Nelson GJ, Williams DM, Ebach MC (2003) A Question of Conflict: Three Item and Standard Parsimony Compared. Systematics and Biodiversity, 1 : 145 - 149.

Reid G, Williams DM (2003) The morphology of the Gyrosigma balticum complex (Bacillariophyta). The Phycologist, 64 :

Reid G, Williams DM (2003) Systematics of the genus Gyrosigma (Bacillariophyta) including a description of three new species. Phycological Research, 51 : 126 - 142.

Reid G, Williams DM (2003) The Small, the Large and the Unknown: Dealing with diatom diversity. Fourth Biennial Conference of the Systematics Association, Abstracts, 14 - 15.

Williams DM, Humphries CJ (2003) Component Coding, Three-item coding and consensus methods. Systematic Biology, 52 : 255 - 259.

Williams DM, Humphries CJ (2003) Chapter 6. Homology and character evolution, In: Deep morphology: Toward a Renaissance of Morphology in Plant Systematics, Stuessy TF, Mayer V, Hörandl E (Eds). A.R.G. Gantner : Liechtenstein. 326+ix pp. 119 - 130.

Kitching IJ, Forey P, Williams DM (2000) Cladistics, In: Encyclopedia of Biodiversity, Levin S (Eds). Academic Press : San Diego. 677 - 692.

Kitching IJ, Forey PL, Humphries CJ, Williams DM (1998) Cladistics. Oxford University Press : Oxford. 228.

Forey PL, Humphries CJ, Kitching IJ, Scotland RW, Siebert DJ, Williams DM (1992) Cladistics: a practical course in systematics. Oxford University Press : Oxford. 191.