The Echinoid Directory
Contributed by Jenna Sullivan, April 2007
Clypeaster biarritzensis var. trotteri Gregory, 1911, p. 662
| Distribution | Upper Eocene, in a marly imestone containing many specimens of Operculina libyca. Ain Sciahat, Cyrene, Libya. |
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| Type | Syntype of variety Natural History Museum E11343 |
| Species Included | Species of Clypeaster |
| Remarks | Form and dimensions similar to those normal to the species, however the petals of ambulacra are shorter, the poriferous zones broader, and the distal ends less open [Gregory 1911].
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