• Quaternary of Canada (1: Quebec collection), Ethiopia (1), Kenya (1), Mexico (1), Niger (2), Portugal (1), the Russian Federation (1), Sudan (1), Syria (1), Tunisia (1), the United Kingdom (6), United States (7: California, Michigan, Virginia)

• Blancan of United States (2: Arizona, Oregon)

• Pliocene of Ethiopia (1), Kenya (4), Spain (2), United States (2: Oregon)

• Hemphillian of United States (1: California)

• Miocene of France (1), Germany (2), Greece (2), India (2), Kenya (7), Nepal (1), Portugal (2), Switzerland (8), Thailand (2), Tunisia (1), United States (2: Nebraska, Utah)

• Oligocene of the Czech Republic (1), Kazakhstan (1)

• Eocene of Pakistan (1)

• Jurassic of Greenland (2)

Total: 71 collections each including a single occurrence