Alternative spelling: Ophiocistia
Full reference: W. J. Sollas. 1899. Fossils in the University Museum, Oxford: I. On Silurian Echinoidea and Ophiuroidea. Geological Society of London, Quarterly Journal 55:692-715
Parent taxon: Echinozoa according to K. Nanglu et al. 2023
See also Boczarowski 2001, Jell 1983, Rahman et al. 2019, Reich and Haude 2004, Sepkoski 2002 and Ubaghs 1953
Sister taxa: Echinoidea, Holothuroidea
Subtaxa: Branzoviella Eucladidae Linguaserridae Rhenosquamidae Rotasacciidae Sollasinidae Volchoviidae
Ecology: epifaunal grazer
Distribution:
• Cretaceous of Germany (1 collection)
• Jurassic of France (1)
• Triassic of Italy (2), Slovenia (1)
• Permian of Germany (1), Iran (1), Italy (1), United States (3: Kansas, Texas)
• Carboniferous of Afghanistan (2), Austria (1), Germany (1), Japan (1), United States (8: Indiana, Missouri, Montana, Nebraska)
• Devonian of Australia (3), the Czech Republic (1), Germany (2), Poland (13)
• Silurian of the United Kingdom (4)
Total: 47 collections including 67 occurrences