• Quaternary of Belgium (1 collection), Canada (7: Alberta, Yukon), China (5), the Czech Republic (1), France (9), Georgia (1), Germany (1), Greece (4), Hungary (9), Italy (15), Kazakhstan (1), Kyrgyzstan (1), Mongolia (1), Portugal (1), Romania (9), the Russian Federation (6), Spain (4), Turkey (3), Ukraine (2), the United Kingdom (1), United States (20: Alaska, Colorado, Maryland, Montana, Nevada, Pennsylvania, Utah, Virginia, West Virginia, Wyoming)

• Pliocene to Pleistocene of China (1), France (1), Italy (5), Spain (1)

• Pliocene of Canada (1: Northwest Territories), China (16), France (3), Greece (4), Hungary (4), Italy (4), Kazakhstan (4), Kyrgyzstan (1), Moldova (1), Morocco (1), Poland (1), Romania (2), the Russian Federation (3), Spain (14), Tajikistan (1), Turkey (4), Ukraine (5)

• MN 13 of China (2), Greece (1), Portugal (2), Spain (2)

• Hemphillian of United States (6: Nebraska, Oregon)

• Miocene to Pliocene of Greece (3)

• Miocene of Austria (1), Canada (4: Saskatchewan), China (21), France (21), Germany (28), Greece (15), Hungary (1), Italy (12), Kazakhstan (2), Kenya (2), Libya (2), Moldova (3), Mongolia (25), Namibia (1), Pakistan (1), Portugal (7), Romania (1), Saudi Arabia (1), Serbia and Montenegro (2), Spain (33), Switzerland (41), Turkey (2), Uganda (1), Ukraine (1), United States (66: California, Colorado, Idaho, Montana, Nebraska, Nevada, New Mexico, Oklahoma, Oregon, South Dakota, Utah, Wyoming)

• Harrisonian of United States (5: Nebraska)

• Arikareean of United States (12: California, Idaho, Montana)

• Oligocene to Miocene of China (1), Germany (1), Mongolia (4)

• Oligocene of Bosnia and Herzegovina (1), Canada (1: Saskatchewan), China (14), France (1), Germany (6), Kazakhstan (8), Mongolia (32), United States (3: Nebraska, South Dakota)

Total: 578 collections including 772 occurrences