Tergomya - Cyrtonellida - Cyrtolitidae

Parent taxon: Cyrtolitidae according to B. Runnegar and P.A. Jell 1976

Sister taxa: Carcassonnellinae, Cyclocyrtonella, Cyrtodiscus, Cyrtolites, Cyrtonellopsis, Kolihadiscus, Paracyrtolites, Quasisinuites, Sinuella, Sinuitopsina, Sinuitopsis, Telamocornu, Yochelsonellis

Subtaxa: none

Ecology: slow-moving low-level epifaunal grazer