• Quaternary of Algeria (1 collection), Canada (1: Quebec), Japan (1), United States (19: California, Florida, Georgia, Maryland, Pennsylvania, Tennessee)

• Blancan of United States (1: Idaho)

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

• Pliocene of China (2), France (1), Hungary (1), Japan (1), Pakistan (1), Ukraine (2)

• Hemphillian of United States (8: California, Idaho, Oregon)

• Miocene of Austria (3), Germany (3), India (1), United States (2: Oregon)

• Oligocene to Miocene of Kazakhstan (1)

• Oligocene of France (3), Georgia (1)

• Eocene of France (1), United States (1: Wyoming)

• Clarkforkian of United States (2: Wyoming)

• Paleocene of Canada (1: Saskatchewan)

• Cretaceous of China (1), United States (6: Montana, North Dakota, Wyoming)

Total: 66 collections each including a single occurrence