• Miocene of Mexico (1 collection)

• Oligocene of North Atlantic (4), United States (1: Washington)

• Eocene of Belize (1), Turkey (1)

• Paleocene of Antarctica (11)

• Cretaceous of Antarctica (13), Canada (2: Northwest Territories), Cuba (2), United States (1: Alaska)

• Jurassic to Cretaceous of Cuba (1)

• Jurassic of Bulgaria (1), Canada (7: British Columbia, Yukon), Cuba (4), France (2), Hungary (1), Italy (1), Mexico (1), Peru (1), Serbia and Montenegro (1), Slovakia (1), Spain (1), United States (2: Nevada)

• Triassic of China (2), East Timor (1), Greece (3), Indonesia (3), Japan (4), New Zealand (1), the Russian Federation (1), Slovenia (1), Thailand (1), Turkey (2), United States (2: Nevada)

• Permian of China (5)

• Carboniferous to Permian of United States (1: California)

• Carboniferous of United States (1: Utah)

• Devonian of the Czech Republic (2), the Russian Federation (1)

• Silurian of the United Kingdom (1)

• Ordovician of Norway (2), United States (1: Nevada)

• Cambrian of Canada (1: Newfoundland and Labrador)

Total: 97 collections including 98 occurrences