Scaphopoda - Gadilida - Gadilidae
Alternative spelling: Siphonodentaliidae
Parent taxon: Gadilidae according to P. D. Reynolds and G. Steiner 2008
See also Dockery 1993, Emerson 1957, Harris and Palmer 1947 and Ward and Blackwelder 1987
Sister taxa: Calstevenus, Gadilinae, Gadilopsis
Subtaxa: Dischides Polyschides Sagamicadulus Siphonodentalium Striocadulus
Distribution:
• Quaternary of Japan (1 collection), United States (3: California, Florida)
• Pliocene to Pleistocene of Ecuador (1)
• Pliocene of Jamaica (1), Panama (2), United States (1: Florida), Venezuela (5)
• Miocene to Pliocene of United States (1: Alaska)
• Miocene of Argentina (1), Australia (1), Denmark (1), Indonesia (1), Panama (20), United States (7: Florida)
• Oligocene of Denmark (1)
• Eocene of France (1), Japan (1), the United Kingdom (2), United States (14: Alabama, Louisiana, Mississippi, Texas)
• Paleocene of Austria (1), Denmark (3)
Total: 69 collections including 70 occurrences