• Permian of Afghanistan (1 collection), Australia (22), Azerbaijan (1), Bolivia (15), Cambodia (1), Canada (21: British Columbia, Northwest Territories, Nunavut, Yukon), China (63), Germany (2), Greece (2), Greenland (29), Hungary (1), India (3), Indonesia (10), Iran (1), Italy (5), Japan (7), Laos (1), Lithuania (16), Madagascar (1), Malaysia (6), Mexico (4), Mongolia (2), Myanmar (8), Nepal (3), New Zealand (3), Oman (2), Pakistan (98), the Russian Federation (22), Slovenia (3), Svalbard and Jan Mayen (8), Tajikistan (3), Thailand (10), Timor-Leste (1), Tunisia (3), Ukraine (2), the United Kingdom (26), United States (337: Alaska, California, New Mexico, Oregon, Texas)

• Namurian of Thailand (1)

• Carboniferous of Australia (12), Bolivia (1), Canada (4: Nunavut, Yukon), China (3), Czechia (1), India (8), Italy (1), Libya (1), the Russian Federation (5), South Korea (1), Spain (1), Svalbard and Jan Mayen (3), the United Kingdom (12), United States (72: Alaska, Arizona, Arkansas, California, Illinois, Indiana, Kentucky, Missouri, Montana, Nevada, New Mexico, Oklahoma, Texas)

• Givetian of United States (1: Missouri)

• Devonian of Canada (5: Alberta, Ontario), France (1), Italy (1), United States (39: Arizona, Indiana, Iowa, Michigan, Missouri, New York)

Total: 916 collections including 1214 occurrences