†family Bathycheilidae Pribyl 1953 (trilobite)
Trilobita - Phacopida - Bathycheilidae
Parent taxon: Calymenina according to J. M. Adrain 2011
See also Jell and Adrain 2002 and Whittington et al. 1997
Sister taxa: Bavarillidae, Calymenidae, Homalonotidae, Pharostomatidae
Subtaxa: Bathycheilus Eulomina
Ecology: fast-moving low-level epifaunal carnivore
Distribution: