Family Cassidae Latreille 1825 (snail)
Alternative spelling: Cassinae
Parent taxon: Tonnoidea according to A. G. Beu 2008
Sister taxa: Bursidae, Galeodoliidae, Laubierinidae, Personidae, Pisanianuridae, Ranellidae, Tonnidae
Subtaxa: Casmaria, Cassididae, Cassinae, Ceiba, Oocorythinae, Phaliinae, Sconsodolium
Ecology: epifaunal carnivore