• Permian of Armenia (7 collections), Azerbaijan (8), Cambodia (2), Canada (24: British Columbia, Northwest Territories, Nunavut, Yukon), China (167), Croatia (1), Germany (13), Greece (4), Greenland (42), Iran (48), Japan (5), Laos (1), Lithuania (16), New Zealand (3), Pakistan (4), Poland (8), the Russian Federation (37), Svalbard and Jan Mayen (10), Thailand (2), the United Kingdom (32), United States (27: Alaska, Montana, Texas)

• Carboniferous of Canada (21: Alberta, Yukon), China (2), France (1), Libya (2), the Russian Federation (1), Svalbard and Jan Mayen (2), United States (13: Alaska, Arkansas, Colorado, Illinois, Iowa, Iowa/Illinois, Missouri, Montana, Oklahoma)

• Devonian of Afghanistan (3), Canada (6: Alberta, British Columbia), China (7), Libya (2), Morocco (2), Poland (20), the Russian Federation (1), the United Kingdom (4), United States (18: Arizona, Colorado, Montana, New Mexico)

Total: 566 collections including 658 occurrences