• Quaternary of Ecuador (1 collection), United States (21: Florida, Georgia, Kansas, Maryland, Mississippi, Ohio, South Carolina, Virginia)

• Blancan of United States (6: Florida, Kansas, Nebraska)

• Pliocene of Germany (1), Kazakhstan (1), Romania (1), Slovakia (2), Ukraine (1), United States (1: Florida)

• Hemphillian of United States (4: Florida, Indiana, Nebraska, Tennessee)

• Miocene of Austria (1), the Czech Republic (1), France (10), Germany (14), Poland (1), Spain (17), Turkey (1), Ukraine (1), United States (8: Florida, Nebraska)

• Oligocene to Miocene of France (1)

• Oligocene of France (8), Germany (2)

• Eocene of United States (6: New Mexico, Oregon, Utah, Wyoming)

• Paleocene of Belgium (1), Canada (5: Alberta), United States (7: Alaska, Colorado, Montana, North Dakota, Wyoming)

• Cretaceous of Canada (49: Alberta, Saskatchewan), Mexico (3), United States (61: Montana, New Jersey, North Dakota, South Dakota, Utah, Wyoming)

Total: 236 collections including 258 occurrences