The Echinoid Directory

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Goniopygus sp. Smith & Rader, 2009, p. 35

Diagnostic Features
Distribution	Glen Rose Formation, Lower Albian, Lower Cretaceous, Texas, USA.
Remarks	Juvenile specimens. Differs from similar sized individuals of  Goniopygus whitneyi in having a disc with obvious sutural pits, the disc is proportionally larger and it has a much smaller and distinctly quadrilobate outline.  Finally there are no obvious perianal tubercles developed. Smith, A. B. & Rader, B. 2009. Echinoid diversity, preservation potential and sequence stratigraphical cycles in the Glen Rose Formation (early Albian, Early Cretaceous), Texas, USA. Palaeodiversity and Palaeoenvironments 89, 7-52.