Diagnosis | Calycina with:
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Range | Lower Jurassic (Plliensbachian) to Lower Cretaceous (Aptian), Europe, Middle East, India. |
Classification and/or Status | Taxon not employed by Kroh & Smith (2010) |
Remarks | Like acrosalenids in having ambulacral tubercles very much smaller than interambulacral tubercles, perforate and crenulate tubercles and simple plate compounding with all elements extending to the perradius, but differing in having a rounded periproct without angular elements forming an integral part of the apical disc circlet. |