Echinoidea - Calycina - Diplopodiidae
Parent taxon: Phymosomatoida according to A. Kroh and A. B. Smith 2010
See also Clark and Twitchell 1915
Sister taxa: Boletechinus, Cottaldia, Emiratiidae, Gauthiosoma, Heterodiadematidae, Leioechinus, Phymosomatidae, Polydiadematidae, Trochotiara, Zeugopleurus
Subtaxa: Diplopodia
Ecology: slow-moving low-level epifaunal omnivore
Distribution:
• Cretaceous of Brazil (1 collection), Egypt (3), France (8), Hungary (1), Nigeria (1), Portugal (2), Spain (1), Switzerland (18), the United Kingdom (2), United States (3: Texas)
• Jurassic of France (5), Germany (3), India (3), Morocco (2), Poland (1), Portugal (4), Switzerland (2), the United Kingdom (7), United States (1: California)
Total: 68 collections including 86 occurrences