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
Domain:	Eukaryota
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]

References

1. "Hattopsis Ali, 1992". Global Biodiversity Information Facility.
2. "Hattopsis sphericus Ali, 1992a". Global Biodiversity Information Facility.
3. Ali, Mohammad Said M. (1992). "A new genus and species of regular echinoid from the Late Cretaceous of Gebel El Rowdah, Hatta area, Oman-UAE". Journal of Paleontology. 66 (4): 693–696. Bibcode:1992JPal...66..693A. doi:10.1017/S0022336000024616. S2CID 132155950.
4. Abdelhamid, Marouf Abdelaty Mohamed; Abdelghany, Osman; Abu Saima, Mahmoud; Asan, Anhar (2025-03-01). "Selected regular echinoids (Echinoidea) from the upper Campanian–Maastrichtian along the western borders of the Northern Oman Mountains, with description of a new species". Cretaceous Research. 167: 106037. doi:10.1016/j.cretres.2024.106037. ISSN 0195-6671.