Tympanotonos (Tympanotonos) Schumacher 1817 (horn snail)
Gastropoda - Cerithioidea - Potamididae
Parent taxon: Tympanotonos according to M. Harzhauser 2004
See also Squires 1999
Sister taxa: Tympanotonos (Diptychochilus), Tympanotonos (Eotympanotonus), Tympanotonos morillensis, Tympanotonos stroppus, Tympanotonos turris
Subtaxa: Tympanotonos (Tympanotonos) californicus
Ecology: epifaunal grazer
Distribution:
• Oligocene of Bulgaria (1 collection)
• Eocene of Bulgaria (5), Spain (22), United States (4: California)
Total: 32 collections including 34 occurrences