• Permian of Australia (2 collections), Canada (11: British Columbia, Northwest Territories, Nunavut, Yukon), China (6), Germany (4), Greenland (7), India (3), Japan (1), Laos (1), Lithuania (12), Nepal (29), Pakistan (39), Poland (2), the Russian Federation (6), Svalbard and Jan Mayen (3), the United Kingdom (17), United States (23: Alaska, Texas)

• Namurian of Australia (7)

• Carboniferous to Permian of China (3)

• Carboniferous of Afghanistan (1), Australia (33), Canada (25: Alberta, Nunavut), China (2), France (1), India (5), Mexico (1), Nepal (3), Pakistan (1), South Korea (1), the United Kingdom (12), United States (22: Alaska, Arkansas, Indiana, Iowa, Missouri, Oklahoma, Tennessee, Texas)

• Devonian of Canada (2: Alberta), China (1), France (1), United States (9: Colorado, New Mexico)

Total: 296 collections including 329 occurrences