Family Apatopygidae Kier 1962 (sea urchin)
Echinoidea - Irregularia - Apatopygidae
Full reference: P. M. Kier. 1962. Revision of the cassiduloid echinoids. Smithsonian Miscellaneous Collections 144(3):1-262
Parent taxon: Neognathostomata according to A. Kroh and A. B. Smith 2010
See also Gatt 2005, Kier 1962 and Kier 1966
Sister taxa: Archiaciidae, Bothryopneustes, Cassiduloida, Clypeasteroida, Clypeidae, Clypeolampadidae, Echinolampadoida, Nucleolitidae, Pygaulidae
Subtaxa: Apatopygus
Ecology: epifaunal grazer-deposit feeder
Distribution:
• Eocene of New Zealand (6 collections)
Total: 6 collections each including a single occurrence