Echinoidea - Cidaroida - Heterocidaridae
Full reference: T. Mortensen. 1934. New Echinoidea (Preliminary Notice). Videnskabelige Meddelelser fra Danks naturhistorisk Forening i København 98:161-167
Parent taxon: Cidaroida according to A. B. Smith 2015
See also Fell 1966
Sister taxa: Cidaridea, Delocidaris, Diplocidaridae, Fellius, Hirudocidaris, Histocidaridea, Leurocidaris, Menocidaris, Mesodiadema, Mikrocidari, Minicidaris, Miocidaridae, Oedematocidaris, Palmerius, Paracidaridae, Polycidaridae, Prophyllacanthus, Rhabdocidaridae, Serpianotiaridae, Triadotiaridae
Subtaxa: Heterocidaris
Type: Heterocidaris
Ecology: slow-moving low-level epifaunal grazer-omnivore
Distribution:
• Jurassic of France (1 collection), Luxembourg (2), the United Kingdom (5)
Total: 8 collections each including a single occurrence