Alternative spelling: Euomphalacea
Full reference: C. A. White. 1877. The invertebrate fossils collected in portions of Nevada, Utah, Colorado, New Mexico, Arizona, by parties of the Expeditions of 1871, 1872, 1873 and 1874. Chapter VI, Carboniferous age. Report upon U.S. Geographical Surveys west of the 100th Meridian, (G.M. Wheeler surveys) 4(1):79-161
Parent taxon: Euomphalina according to P. J. Wagner 2023
See also Bandel and Frýda 1998, Bouchet et al. 2005, Golikov and Starobogatov 1975, Heidelberger and Koch 2005, Jeffery 2003, Knight et al. 1960, Kosnik 2002, Linsley and Kier 1984, Morris and Cleevely 1981, Wagner 1999, Wenz 1938 and Yochelson 1977
Sister taxa: Anomphaloidea, Bridegeites, Craspedostomatoidea, Macluritoidea, Offlyeotrochus, Omphalotrochoidea, Ophiletoidea, Oriostomatoidea, Palaeotrochoidea, Platyceratoidea, Pseudophoroidea, Raphistomatoidea, Triassocirrus
Subtaxa: Anomphalidae Elasmonematidae Euomphalidae Helicotomidae Holopeidae Kitikamispira Lesueurillidae Microdomatidae Neoplatyteichum Nettersheimia Omphalocirridae Omphalocirrinae Omphalotrochidae Ornollus Planitrochidae Pseudophoridae Pycnomphalidae Rhenomphalus Serpulospira Tychobraheidae
Type: Euomphalus