Chondrichthyes - Odontaspidida - Isuridae
Parent taxon: Isuroidea according to J. Herman 1977
See also Case 1981, Deraniyagala 1969, Miller 1967 and Weiler 1938
Sister taxon: Lamiostomatidae
Subtaxa: Galeolamna Isuropsis Oxyrhina
Ecology: nektonic carnivore
Distribution:
• Quaternary of Aruba (1 collection)
• Pliocene of Italy (1), South Africa (1)
• Miocene of Australia (4), the Czech Republic (1), Italy (1), New Zealand (2), Portugal (1), Slovakia (1), Sri Lanka (2), United States (5: Maryland, New Jersey, South Carolina)
• Neogene of South Pacific (4), United States (3: California, Hawaii)
• Oligocene of Australia (3), Venezuela (1)
• Eocene of Barbados (1), Egypt (1), Namibia (1), Romania (1), the United Kingdom (4), United States (2: Alabama, Mississippi)
• Paleocene of Denmark (1), United States (2: Montana, New Jersey)
• Cretaceous of France (4), Switzerland (1)
Total: 49 collections including 57 occurrences