• Miocene of United States (1: Texas collection)

• Eocene of Antarctica (2), Argentina (1), China (2), France (1), Morocco (1), United States (1: California)

• Paleocene of Morocco (4), Romania (2), United States (2: Utah, Wyoming)

• Cretaceous of Bolivia (1), Canada (8: Alberta, Saskatchewan), Kazakhstan (1), Mongolia (1), Spain (1), United States (8: Mississippi, Montana, New Mexico, South Dakota, Utah), Uzbekistan (4)

Total: 41 collections including 54 occurrences