†Triphora (Mastonia) Hinds 1843 (snail)
Gastropoda - Sorbeoconcha - Triphoridae
Alternative spelling: Mastonia
Parent taxon: Triphora according to H. S. Ladd 1972
See also Wilson 1993
Sister taxa: Triphora (Cosmotriphora), Triphora (Eocautor), Triphora (Iniforis), Triphora (Ogivia), Triphora (Triphora), Triphora hemphilli, Triphora kanakoffi, Triphora perversa, Triphora rakhiensis
Subtaxa: none
Ecology: epifaunal carnivore
Distribution:
• Quaternary of China (2 collections), the Marshall Islands (4), United States (1: Hawaii)
• Miocene of the Marshall Islands (1), Palau (1)
Total: 9 collections each including a single occurrence