The Echinoid Directory

Echinolampas (Cypholampas) Lambert, 1906, p. 33

Diagnostic Features
  • Test of moderate size, subcircular in outline, domed in profile with relatively flat aboral surface, slightly sunken towards the peristome.
  • Apical disc subcentral; monobasal, with four gonopores.
  • Petals well developed; raised, straight, parallel, open distally, extending to ambitus. Pore-pairs small and circular; subconjugate; the two columns in each petal of unequal length; pores beneath petals single.
  • Peristome subcentral, pentagonal, transverse, wider than long.
  • Periproct inframarginal and transverse; not sunken.
  • Phyllodes relatively short, single pored, with three series in each half ambulacrum, plus scattered pores in between.
  • Bourrelets restricted to the vertical walls of the well leading to the peristome opening.
  • Buccal pores present.
  • Tubercles the same size adorally as adapically.
  • Narrow, naked, granular zone in interambulacrum 5.
Eocene of Europe.
Name gender feminine
Clypeaster stelliferus Lamarck, 1816, p. 16 [=Clypeaster fornicatus Goldfuss, 1826, p. 134]; by original designation.
Species Included
  • Echinolampas (Cypholampas) stelliferus (Lamarck, 1816); Lutetian, France.
Classification and/or Status

Irregularia; Cassiduloida; Echinolampadidae.

Monophyletic; treated here as a subgenus of Echinolampas Gray, 1825.


Echinolampas (Cypholampas) has distinctly raised petals. This character differentiates it from Echinolampas (Echinolampas) where the petals are flush with the test.

Lambert & Thiery (1909-1925) use the type species of Cypholampas for describing their section (subgenus) six of Echinolampas; to which they refer 27 species.

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

Lambert, J. 1906. Etude sur les Echinides de la Molasse de Vence. Ann. Soc. Alpes-Maritime 20, p. 33.

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