• Quaternary of Belgium (1 collection), Brazil (5), Canada (64: British Columbia, Labrador, Manitoba, New Brunswick, Newfoundland, Newfoundland and Labrador, Nova Scotia, Nunavut, Quebec), Chile (1), Djibouti (1), Greenland (59), Iceland (7), Ireland (1), Japan (10), Mexico (7), Morocco (1), Norway (1), Peru (5), Poland (1), South Africa (1), Sweden (1), the United Kingdom (22), United States (141: Alaska, California, Delaware, Florida, Louisiana, Maine, Maryland, Massachusetts, New Jersey, New York, North Carolina, Oregon, South Carolina, Vermont, Virginia, Washington), Uruguay (1)

• Pliocene to Pleistocene of United States (1: Alaska)

• Pliocene of Antarctica (1), Belgium (4), Iceland (2), Japan (7), the Netherlands (1), the Russian Federation (6), the United Kingdom (6), United States (32: Alaska, California, North Carolina, Oregon, Virginia), Venezuela (1)

• Hemphillian of United States (1: California)

• Miocene to Pliocene of United States (20: California)

• Miocene of Argentina (1), Austria (1), France (1), Germany (6), Indonesia (3), Japan (15), the Netherlands (1), Poland (3), the Russian Federation (23), United States (47: Alaska, California, Delaware, Maryland, New Jersey, Virginia)

• Oligocene to Miocene of United States (1: Alaska)

• Oligocene of Belgium (3), Canada (1: British Columbia), Denmark (1), France (6), Germany (1), Japan (10), the Russian Federation (6), United States (11: Alaska, California, North Carolina)

• Eocene of Antarctica (13), Colombia (1), Egypt (1), Hungary (1), Japan (12), Namibia (1), Pakistan (3), the Russian Federation (2), the United Kingdom (2), United States (6: California, Oregon)

• Paleocene of Belgium (1), France (1), Poland (1)

• Cretaceous of Canada (4: Alberta, British Columbia, Northwest Territories), New Zealand (2)

• Jurassic of France (1)

Total: 605 collections including 726 occurrences