Intistoma DeVries 2007 (top snail)
Gastropoda - Trochoidea - Trochidae
Full reference: T. J. DeVries. 2007. The Cenozoic Tegulinae (Gastropoda: Trochidae) from southern Peru. The Nautilus 121(4):163-181
Parent taxon: Tegulinae according to T. J. DeVries 2007
Sister taxa: Agathistoma, Cantallocostoma, Chlorostoma, Tegula
Subtaxa: Intistoma aureotinctum, Intistoma hemphilli, Intistoma nashae, Intistoma pirqua
Type: Trochus aureotinctus
Ecology: epifaunal grazer