• Quaternary of Australia (1 collection), Kenya (4), Niger (3), Thailand (1), United States (5: Kansas, South Carolina, Texas)

• Blancan of United States (2: Florida, Nebraska)

• Pliocene to Pleistocene of Australia (1), the Congo-Kinshasa (1), Greece (1), Indonesia (1)

• Pliocene of Australia (1), the Congo-Kinshasa (1), Greece (1), Indonesia (2), Kenya (5), the Russian Federation (1), Spain (1)

• Hemphillian of Mexico (1), United States (3: Florida)

• Miocene to Pliocene of Chad (1), Kenya (4), Nepal (1), Tanzania (1)

• Miocene of Chad (1), Germany (1), Greece (2), India (2), Iraq (1), Italy (3), Japan (2), Kenya (8), Myanmar (1), Nepal (4), Panama (2), Portugal (2), Slovakia (2), Tanzania (1), Tunisia (1), Uganda (1), United States (14: Florida, Kansas, Maryland, Nebraska, Oklahoma, Texas), Venezuela (1)

• Oligocene of Canada (2: Saskatchewan), Germany (1), Spain (3), United States (1: Mississippi)

• Eocene of Australia (1), Austria (1), Belgium (4), Canada (3: British Columbia, Northwest Territories, Saskatchewan), China (5), France (2), India (2), Italy (2), Mali (1), Mongolia (2), Pakistan (3), Spain (6), Ukraine (3), United States (73: Alabama, Arkansas, California, Colorado, New Mexico, South Dakota, Texas, Utah, Wyoming), Vietnam (1)

• Clarkforkian of United States (4: Wyoming)

• Paleocene of Canada (1: Alberta), China (1), France (1), the Russian Federation (2), Ukraine (1), United States (32: California, Colorado, Illinois, Montana, North Dakota, Utah, Wyoming)

• Cretaceous of Canada (45: Alberta, British Columbia, Nunavut, Saskatchewan), China (3), Japan (7), Kazakhstan (4), Laos (1), Mexico (13), Mongolia (44), the Russian Federation (2), Sweden (1), Tajikistan (1), Thailand (1), United States (207: Alabama, Arizona, Colorado, Delaware, Montana, Nevada, New Jersey, New Mexico, North Carolina, North Dakota, South Carolina, South Dakota, Texas, Utah, Wyoming), Uzbekistan (2)

Total: 581 collections including 589 occurrences