• Triassic of India (1 collection)

• Permian to Triassic of India (2)

• Permian of Afghanistan (8), Armenia (3), Australia (9), Austria (1), Azerbaijan (2), Bhutan (1), Bolivia (12), Cambodia (1), Canada (60: Alberta, British Columbia, Northwest Territories, Nunavut, Yukon), Chile (4), China (136), Croatia (1), Greece (1), Greenland (16), Hungary (1), India (14), Indonesia (5), Iran (17), Japan (38), Laos (3), Malaysia (5), Mexico (18), Mongolia (10), Myanmar (9), Nepal (16), New Zealand (2), Oman (55), Pakistan (117), Peru (8), the Russian Federation (67), Slovenia (4), Svalbard and Jan Mayen (11), Thailand (9), Tunisia (1), Türkiye (28), Ukraine (2), the United Arab Emirates (1), United States (265: Alaska, Arizona, California, Idaho, Kansas, Montana, Nevada, New Mexico, Oregon, Texas, Utah, Wyoming), Vietnam (2)

• Carboniferous to Permian of Laos (1), United States (13: California, Texas)

• Carboniferous of Australia (42), Belize (3), Bolivia (1), Canada (29: Alberta, Northwest Territories, Nunavut, Yukon), China (16), India (3), Iran (2), Ireland (3), Libya (1), Malaysia (1), Mexico (3), Pakistan (1), the Russian Federation (3), Slovenia (2), South Korea (1), Spain (1), Svalbard and Jan Mayen (1), Ukraine (4), the United Kingdom (66), United States (524: Alabama, Alaska, Arizona, Arkansas, California, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Missouri, Montana, Nebraska, Nevada, New Mexico, Ohio, Oklahoma, Pennsylvania, Texas, Utah, Virginia, Wyoming)

• Devonian of Belgium (3), Canada (1: Alberta), China (7), Germany (1), Poland (11), United States (71: Colorado, Iowa, Montana, Nevada, New Mexico, New York, Pennsylvania), Vietnam (1)

Total: 1782 collections including 2188 occurrences