Echinoidea - Cidaroida - Cidaridae
Alternative spelling: Cidarina
Parent taxon: Cidaridae according to A. Kroh and A. B. Smith 2010
See also Donovan 1993, Fell 1966, Kier 1980, Mortensen 1928 and Smith 2009
Sister taxa: Centrocidaris, Cidarini, Cidaris, Dorocidaris, Goniocidarinae, Hesperocidaris, Phyllacanthina, Prionocidaris, Rhabdocidarinae, Stereocidarinae, Stylocidarinae, Triassicidaris
Subtaxa: Alpicidaris Cyathocidaris Leiocidaris Phyllacanthus Stylocidaris Tretocidaris
Type: Cidaris
Ecology: slow-moving low-level epifaunal grazer-omnivore
Distribution:
• Quaternary of Palau (1 collection)
• Pliocene of Fiji (2)
• Miocene of Australia (1), Brazil (4), Cuba (1), Egypt (1), Fiji (10), Germany (1), Indonesia (2), Italy (1), Malta (1), Micronesia (1), New Zealand (9), Vanuatu (1)
• Eocene to Oligocene of United States (1: Georgia)
• Eocene of Egypt (1), United States (5: Alabama, Florida, North Carolina)
• Paleocene of Mali (2)
• Cretaceous of Antarctica (2), Hungary (1), Jamaica (3), Portugal (6), Spain (4), United States (15: Texas)
Total: 76 collections including 78 occurrences