Gastropoda - Epitonioidea - Epitoniidae
Alternative spelling: Contemniscala
Parent taxon: Opalia according to M. M. Glibert 1962
See also Sepkoski 2002
Sister taxa: Opalia (Crassiscala), Opalia (Dentiscala), Opalia (Granuliscala), Opalia (Nodiscala), Opalia (Opalia), Opalia (Pliciscala), Opalia (Rugatiscala), Opalia atra, Opalia borealis, Opalia cavea, Opalia crenatoides, Opalia infrequens, Opalia mathewsonii, Opalia montereyensis, Opalia spongiosa, Opalia varicostata, Scala (Opalia) calvertensis, Scala (Opalia) cyclostoma, Scala (Opalia) prunicola, Scala (Opalia) reticulata, Scala (Opalia) thomasi, Scalaria (Opalia) annulata
Subtaxa: none
Ecology: slow-moving low-level epifaunal carnivore
Distribution: there are no occurrences of Opalia (Contemniscala) in the database