• Quaternary of Canada (8: Alberta, Northwest Territories, Nova Scotia, Ontario, Quebec, Yukon collections), the Czech Republic (2), France (2), Germany (12), Greece (7), Hungary (1), Italy (4), the Netherlands (3), North Atlantic (1), Romania (4), the Russian Federation (2), Spain (6), Turkey (2), the United Kingdom (4), United States (68: Alaska, Arizona, Arkansas, Florida, Georgia, Idaho, Illinois, Iowa, Kansas, Maine, Maryland, Massachusetts, Michigan, Missouri, Montana, Nebraska, Ohio, Oregon, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Virginia, West Virginia)

• Blancan of Mexico (1), United States (25: Arizona, California, Florida, Idaho, Kansas, New Mexico, Oregon, South Dakota, Washington)

• Pliocene to Pleistocene of Italy (2), Spain (1), United States (1: Montana)

• Pliocene of China (2), France (2), Germany (1), Greece (5), Hungary (1), Italy (3), Kazakhstan (1), Poland (1), Romania (4), the Russian Federation (2), Slovakia (3), Spain (1), Ukraine (3), the United Kingdom (1), United States (2: Idaho)

• Hemphillian of United States (9: Nebraska, Oregon, Washington)

• Miocene of Canada (2: Saskatchewan), China (2), France (24), Germany (7), Italy (1), Moldova (2), Poland (1), the Russian Federation (1), Serbia and Montenegro (1), Spain (2), Switzerland (5), Turkey (3), Ukraine (1), United States (10: Colorado, Kansas, Nebraska, Nevada, Oregon)

• Oligocene of Belgium (2), China (2), France (1), Germany (3), Japan (1), Kazakhstan (9), Spain (1), Switzerland (1), Turkey (1)

• Eocene of the United Kingdom (1)

Total: 281 collections including 298 occurrences