†order Hemicidaroida Beurlen 1937
Alternative spellings: Hemicidarina, Hemicidaroidea
Full reference: K. Beurlen. 1937. Revision der Seeigel aus dem nord- westdeutschen Jura, II Teil, Die regularen Seeigel. Abhandlungen der Preussischen Geologischen Landesanstalt 174:1-149
Parent taxon: Stirodonta according to A. B. Smith 1991
See also Berndt 2003, Durham and Melville 1957, Fell and Pawson 1966 and Sepkoski 2002
Sister taxa: none
Subtaxa: Allomma Colpotiara Micropedina Trochodiadema
Distribution:
• Cretaceous of Bolivia (2 collections), Brazil (4), Egypt (6), France (1), Jordan (2), Kyrgyzstan (1), Nigeria (8), Saudi Arabia (2), Tunisia (1), the United Arab Emirates (1), the United Kingdom (3), Yemen (1)
Total: 32 collections including 34 occurrences