†subfamily Orthothyridinae Muir-Wood 1965 (lamp shell)
Rhynchonellata - Terebratulida - Chlidonophoridae
Parent taxon: Chlidonophoridae according to A. Williams et al. 2006
See also Cooper 1973
Sister taxa: Agulhasiinae, Chlidonophorinae, Draciinae, Eucalathinae
Subtaxa: Orthothyris
Type: Orthothyris
Ecology: stationary low-level epifaunal suspension feeder
Distribution: