Tricolia (Hiloa) Pilsbry 1917 (snail)
Gastropoda - Trochoidea - Phasianellidae
Alternative spelling: Hiloa
Parent taxon: Tricolia according to H. S. Ladd 1966
Sister taxa: Tricolia (Aizyella), Tricolia aquensis, Tricolia calypta, Tricolia mollis, Tricolia neritina, Tricolia pullus, Tricolia spirata, Tricolia syntoma
Subtaxa: Tricolia (Hiloa) variabilis
Ecology: epifaunal grazer
Distribution:
• Quaternary of China (5 collections), the Marshall Islands (1), Tonga (1)
• Miocene of Fiji (1), the Marshall Islands (2)
• Eocene of Australia (1)
Total: 11 collections each including a single occurrence