†order Cyclida Glaessner 1928
Alternative spelling: Cycloidea
Parent taxon: Halicyna according to F. R. Schram and S. Koenemann 2021
See also Dzik 2008, Schram et al. 1997, Schweigert 2007, Schweitzer et al. 2020 and Sepkoski 2002
Sister taxa: none
Subtaxa: Alsasuacaridae Americlidae Anhelkocephalon Cyclidae Halicynidae Hemitrochiscidae Schraminidae
Type: Cyclidae
Distribution:
• Cretaceous of the Netherlands (1 collection)
• Triassic of Austria (1), China (1), France (9), Germany (1), the Netherlands (1), Poland (2)
• Permian of Germany (1), Italy (4)
• Carboniferous of Ireland (1), the United Kingdom (2), United States (2: Illinois)
Total: 26 collections including 36 occurrences