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The Echinoid Directory

Echinolampas Gray, 1825, p. 429

[=Aplolampas Gray, 1825, p. 62, type species Echinolampas montevialensis Schauroth, 1865; =Craterolampas Cotteau, 1891, p. 186, type species Echinolampas raulini Cotteau, 1863; =Cylindrolampas Lambert, 1918, p. 44, type species Echinolampas subcylindrica Desor 1852; =Cypholampas Lambert, 1906, p. 33, type species Clypeaster stelliferus Lamarck, 1816; =Euechinolampas Pomel, 1887, p. 127, type species Echinolampas florescens Pomel, 1887; =Isolampas Lambert, 1906, p. 33, type species Echinolampas goujoni Pomel, 1888; =Macrolampas Pomel, 1883, p. 33, type species Clypeaster hemisphericus Lamarck, 1916; =Merolampas Pomel, 1883, p. 63, type species Echinolampas mattseeensis Quenstedt, 1875; =Microlampas Cotteau, 1887, p. 643(101), type species Microlampas conicus Cotteau, 1887; =Miolampas Pomel, 1883, p. 62, type species Echinolampas depressa Gray, 1851; =Oeidolampas Lambert, 1918, p. 44, type species Echinolampas ataxensis Cotteau, 1889; =Palaeolampas Bell, 1880, p. 43, type species Palaeolampas crassa Bell, 1880; =Planilampas Mortensen, 1948, p. 297, type species Echinolampas sternopetala Agassiz & Clark, 1907; =Politolampas Lambert, 1918, p. 45, type species Clypeaster politus Lamarck, 1816; =Progonolampas Bittner, 1890, p. 357, type species Progonolampas novae-hollandiae Bittner, 1892; =Psammolampas Lambert, 1913, p. 136, type species Echinolampas scutiformis Desmoulins, 1837; =Sphelatus Pomel, 1883, p. 54, type species Caratomus lehoni Cotteau, 1880]

[see also: Echinolampas (Craterolampas), Echinolampas (Cypholampas), Echinolampas (Echinolampas), Echinolampas (Miolampas)] ]

Diagnostic Features
  • Test of medium size, subcircular to subovate in outline, domed in profile with relatively flat adoral surface.
  • Apical disc subcentral to anterior; monobasal, with four gonopores.
  • Petals well developed; straight or bowed and open distally. Pore-pairs small, subconjugate, with a varying degree of transverse elongation in the outer pores. The two columns of pore-pairs in each petal of unequal lengths; pores beneath petals single.
  • Peristome subcentral, pentagonal, transverse, wider than long.
  • Periproct inframarginal and transverse; not sunken.
  • Phyllodes short but generally strongly developed, single pored, with two or three series in each half ambulacrum, plus scattered pores in between.
  • Bourrelets weakly developed, forming a distinct well leading to the peristome opening.
  • Buccal pores present.
  • Tubercles the same size adorally as adapically.
Distribution
Eocene to Recent, worldwide distribution.
Name gender feminine
Type
By the removal of E. koenigii to Pygurus by Agassiz (1839, 1840) the genotype becomes, by elimination Echinolampas oviformis Lamarck [=Echinanthus ovatus Leske, 1778, p. 127; as subsequently designated by Pomel, 1883, p. 62. (see Lambert 1918, p. 37)
Species Included
  • E. ovata (Leske, 1778); Lower Miocene to Recent, Indo-Malaysia.
  • E. alexandri de Loriol, 1876; Upper Miocene to Recent, Japan, Java, Malay and Philippines.
  • E. bombos Nisiyama, 1968; Lutetian (Eocene), Bonin Island.
  • E. discoideus d'Archiac & Haime, 1853; Oligocene, Pakistan
  • E. gambierensis Tenison Woods, 1867; Lower Miocene, Australia.
  • E. gregoryi McNamara & Philip, 1980; Middle Miocene, Australia.
  • E. jacquemonti d'Archiac & Haime, 1853; Eocene, Pakistan
  • E. khariensis Srivastava & Singh, 1999; Middle Eocene, India
  • E. lipiformis Srivastava & Singh, 1999; Middle Eocene, India
  • E. morgani Cotteau, 1860; Lower - Middle Miocene, Australia.
  • E. ovalum Laube, 1869; Lower - Middle Miocene, Australia.
  • E. pipurensis Srivastava & Singh, 1999; Middle Eocene, India
  • E. posterocrassa Gregory, 1890; late Middle to early Upper Eocene, Australia.
  • E. tatei Lambert, 1898; late Oligocene-early Miocene, Tasmania
  • E. vicaryi d'Archiac & Haime, 1853; Middle Eocene, India
  • E. vrians Sowerby, in Grant 1840; Middle Eocene, Pakistan.
  • E. yoshiwarai de Loriol, 1902; Upper Miocene-Lower Pliocene, Japan.
  • plus many others….

The following are indeterminate at species level
Classification and/or Status
Irregularia; Cassiduloida; Echinolampadidae.
Remarks

More than 285 species have been assigned to this genus (Roman, 1965, p. 689). Due to the very large number of species, several attempts have been made to subdivide this genus into subgenera or sections. Lambert (1907, p. 28) and Lambert & Thiery (1921, pp. 377-384; 1924, p. 385) divide this genus into eight sections, distinguished on variable characters, as evidenced by the the fact that different specimens of one species have been assigned to more than one section (Kier, 1957, p. 848). Mortensen (1948, p. 272) grouped these into three subgenera, however, such characters as used by Mortensen are too variable to be of generic distinction (Kier, 1962, p. 107). For the purpose of this website we have divided Echinolampas into four subgenera, using reliable characters. We leave it to future authors to conduct a more thorough morphometric analysis of Echinolampas.

Gray, J. E. 1825. An attempt to divide the Echinida, or sea eggs, into natural families. Annals of Philosophy, new series, 10, 423-431.

P. M. Kier. 1962. Revision of the cassiduloid echinoids. Smithsonian Miscellaneous Collections, 144 (3) 262 pp.

Lambert, J. 1907. Etude sur les echinides fossiles de la mollase de Vence. Annales de la Societe des Lettres des Sciences et des Arts Alpes-Maritimes 20, 64 pp., 10 pls.

Lambert, J. 1918. Considérations sur la classification des échinides atelostomes. Mémoires de la Société académique de l’Aube, (3) 82, 9-54.

J. Lambert & P. Thiery. 1909-1925. Essai de nomenclature raisonnee des echinides. Libraire Septime Ferriere, Chaumont, 607 pp., 15 pls.

K. J. McNamara & G. M. Phillip. 1980. Tertiary species of Echinolampas (Echinoidea) from southern Australia. Memoires of the National Museum, Victoria, 41, 14 pp., 2 pls.

T. Mortensen. 1948. A monograph of the Echinoidea: 4 (1): Holectypoida, Cassiduloida. Reitzel, Copenhagen, 363 pp., 14 pls.

J. Roman. 1965. Morphologie et evolution des Echinolampas (Echinides, Cassiduloides). Memoires du Museum National d\'\'\'\'Histoire Naturelle, Nouvelle Serie, C, 15, 1-341, pls 1-12.

S. Nisiyama. 1968. The echinoid fauna from Japan and adjacent regions part II. Palaeontological Society of Japan Special Papers 13, 1-491, pls 1-30.