Hattopsis

Hattopsis is a genus of echinoid in the family Arbaciidae. It was described in 1992 from specimens in the UAE. There were 2 species described, though one was moved to another genus:^[1] Hattopsis paucituberculatus (now in genus Noetlingaster as Noetlingaster monotuberculatus) and Hattopsis sphericus, both are known from the late maastrichtian.^[3] Another species, Hattopsis muradi, was described in 2024.^[4]

Hattopsis Temporal range: Maastrichtian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Arbacioida
Family:	Arbaciidae
Genus:	†Hattopsis Ali, 1992[1]
Species:	†H. sphericus
Binomial name
†Hattopsis sphericus Ali, 1992[2]