• Permian of Australia (1 collection), Austria (3), Azerbaijan (1), Canada (4: British Columbia, Nunavut), China (2), India (2), Indonesia (4), Italy (2), Laos (1), Slovenia (1), United States (6: Alaska, California), Vietnam (1)

• Namurian of Thailand (1)

• Carboniferous to Permian of United States (1: California)

• Carboniferous of Argentina (1), India (1), Italy (1), Mexico (1), Spain (1), Svalbard and Jan Mayen (3), the United Kingdom (10), United States (23: Alaska, Arizona, California, Iowa, Missouri, Montana, Texas)

• Givetian of France (2), the Russian Federation (1)

• Devonian of Afghanistan (3), Australia (8), Belgium (13), Canada (58: British Columbia, Northwest Territories, Northwest Territories and Yukon, Nunavut, Ontario, Yukon, Yukon Territory), China (34), Czechia (13), France (9), Germany (33), Italy (3), Morocco (3), Myanmar (2), Poland (11), the Russian Federation (16), Spain (6), Thailand (2), United States (109: Alaska, Colorado, Iowa, Maryland, Michigan, Nevada, New Mexico, New York, Ohio, Pennsylvania), Vietnam (4)

• Whitwellian of Canada (3: Northwest Territories)

• Silurian of Australia (13), Canada (17: British Columbia, Northwest Territories, Nunavut, Ontario, Quebec), China (10), Czechia (4), the Russian Federation (20), Tajikistan (2), United States (33: Alabama, Alaska, California, Iowa, Maryland, Nevada, New York, Utah)

Total: 503 collections including 576 occurrences