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The Echinoid Directory

Contributed by Andrew Smith, December 2006

Aplocidaris Lambert & Thiery, 1909, p. 31

Diagnostic Features	Test small, circular. Ocular plate long and projecting Ambulacra narrow, composed of oblique plates with pore-zones occupying most of the ambulacral width (no perradial zone of tubercles). Interambulacral plates with single large tubercle. Tuberculation unknown.
Distribution	Upper Triassic (Norian), Montenegro.
Name gender	feminine
Type	Cidaris helenae Vinassa de Regny, 1903, p. 19, by monotypy.
Species Included	Only the type species.
Classification and/or Status	Nomen dubium.
Remarks	Kier (1977) restudied the holotype and thought it a specimen of either Mikrocidaris or Megaporocidaris. However, given its extremely poor state of preservation Kier treated this genus as a nomen dubium. Kier, P. M. 1977. Triassic echinoids. Smithsonian Contributions to Paleobiology 30, 1-88.