dcsimg

Diagnosis

provided by World Register of Marine Species
Apical system weekly disjunct, semi-intercalary with an enlarged madreporite separating oculars II and IV; ambulacra homogenous, petaloid with elongated slits; plastron unknown, inferred to be amphisternous; periproct exocyclic.

Reference

Mintz, L. W. (1968). Echinoids of the Mesozoic families Collyritidae d'Orbigny, 1853 and Disasteridae Gras, 1848. Journal of Paleontology. 42: 1272-1288.

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WoRMS Editorial Board
contributor
Andreas Kroh [email]