The Echinoid Directory

Subfamily Hemicidarinae Wright, 1857, p. 68


 Hemicidaridae with:

  • ambulacral plating trigeminate with acrosaleniid-style plate compounding above ambitus.
Middle Jurassic (Bathonian) to Lower Cretaceous (Aptian), Europe, Middle East, India.
Type Hemicidaris
Classification and/or Status Carinacea, Hemicidaridae,
Distinguished from Pseudocidarinae by having compound ambulacral plating above the ambitus.

Wright, T. W. 1855-1960. Monograph of the British fossil Echinodermata of the Oolitic formations. I. Echinoidea. Monographs of the Palaeontographical Society  481 pp.