Diagnosis | Phymosomatoida with:
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Range | Upper Cretaceous, Europe, North Africa, Middle East, South America. |
Classification and/or Status | Calycina, Phymosomatoida, |
Remarks | Very like Emiratiidae in appearance but with imperforate, non-crenulate tubercles. Members of the Phymosomatidae have a similar large apical disc and imperforate tubercles, but their ambulacral plating is always phymosomatid, not diadematid and their tubercles are distinctly crenulate. |