Tribe Umboniini Adams and Adams 1854 (top snail)
Gastropoda - Trochoidea - Trochidae
Parent taxon: Umboniinae according to P. Bouchet et al. 2005
Sister taxa: none
Subtaxa: Umbonium
Ecology: epifaunal grazer
Distribution:
• Quaternary of Japan (6 collections), the Philippines (1), Taiwan (2)
• Pliocene of Japan (5), the Philippines (2)
• Miocene of Indonesia (1), the Philippines (1)
• Triassic of Italy (2)
Total: 20 collections including 21 occurrences