The Echinoid Directory

Pseudoffaster Lambert, in Lambert & Thiery 1924, p. 413

Diagnostic Features	Test globular and thick-shelled Apical disc slightly anterior of centre with four gonopores Frontal groove starts below ambitus and forms short but well-defined groove to peristome Paired ambulacra non-petaloid; pore-pairs rudimentary Peristome small and oval; close to anterior border and facing forward into frontal groove Plastron plating orthosternous - labral plate followed by single symmetrical sternal plate; episternals somewhat offset Plastron plating continuous Aboral tuberculation fine and uniform Marginal fasciole present
Distribution	Upper Cretaceous; Late Campanian, Tunisia; Maastrichtian, Spain and Former SSU
Name gender	masculine
Type	Holaster caucasicus Dru, 1884, p. 63, by original designation
Species Included	Only the type species
Classification and/or Status	Holasteroida, Meridosternata, Stegasterina, Calymnidae Monotypic
Remarks	Differs from Seunaster in having a subglobular shape and strongly keeled oral surface. Differs from Sternopatagus in having a continuous ambulacrum, posterior periproct and slightly offset episternal plates. A. B. Smith, J. Gallemi. C. H. Jeffery, G. Ernst & P. D. Ward 1999. Late Cretaceous-early Tertiary echinoids from northern Spain: implications for the Cretaceous-Tertiary extinction event. Bulletin of the Natural History Museum, London (Geology Series) 55, 81-137.