Distribution:
• Quaternary of Japan (3 collections), the Russian Federation (1)
• Blancan of United States (1: Texas)
• Pliocene of Tanzania (1)
• Huayquerian of Argentina (1)
• Miocene of Argentina (1), New Zealand (2), United States (1: Idaho)
• Oligocene of Germany (1), New Zealand (1), United States (1: Montana)
• Eocene of Canada (1: British Columbia), Tanzania (1), the United Kingdom (3)
• Paleocene of the United Kingdom (1)
• Cretaceous of Brazil (1), Cameroon (1), Canada (2: British Columbia, Saskatchewan), China (5), France (1), Germany (1), United States (3: Arizona, Montana, New Mexico)
• Jurassic of China (1), Germany (3), Kyrgyzstan (1), Mongolia (5), the Russian Federation (1), United States (5: Massachusetts, Utah, Wyoming)
• Triassic of Australia (1), Germany (2), Kyrgyzstan (1), United States (3: North Carolina, Utah)
• Permian of Australia (1), the Czech Republic (2), Germany (1), the Russian Federation (1), South Africa (1), United States (1: New Mexico)
• Carboniferous of France (1), the United Kingdom (1), United States (11: Illinois, Kansas, New Mexico)
Total: 77 collections each including a single occurrence