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Gregoryaster? heberti (Cotteau, 1890)

Diagnostic Features	Apical disc ethmolytic with four gonopores; genital plate 2 just separating the posterior ocular plates. Labral plate taller than wide; vase-shaped; extending to half-way along the second ambulacral plate.  Sternal plates subequal, with sagittal suture. Peripetalous fasciole present; indented by one plate behind the anterior petals. No trace of subanal or lateroanal fasciole.
Distribution	Eocene (Lutetian), Spain.
Type	Museum d'Histoire Naturelle, Geneva 27807 (figured syntype of Cotteau, 1890, pl. 5, figs 5-6).
Classification and/or Status	Irregularia; Spatangoida; Schizasteridae; ?species of Gregoryaster
Remarks	Originally placed in the genus Trachyaster by Cotteau, but differs markedly from the type species in having anterior and posterior petals much more similar in length.