• Permian to Triassic of India (2 collections)

• Permian of Afghanistan (7), Armenia (3), Australia (9), Azerbaijan (2), Bhutan (1), Bolivia (12), Cambodia (1), Canada (39: British Columbia, Northwest Territories, Nunavut, Yukon), Chile (4), China (95), Croatia (1), Greece (1), Greenland (16), India (14), Indonesia (3), Iran (14), Japan (33), Laos (1), Madagascar (1), Malaysia (5), Mexico (18), Mongolia (8), Myanmar (4), Nepal (16), New Zealand (2), Oman (55), Pakistan (138), Peru (7), the Russian Federation (46), Svalbard and Jan Mayen (11), Thailand (9), Tunisia (1), Turkey (28), Ukraine (1), the United Arab Emirates (1), United States (230: Alaska, Arizona, California, Idaho, Kansas, Montana, Nevada, New Mexico, Oregon, Texas, Utah, Wyoming), Vietnam (1)

• Carboniferous to Permian of United States (10: California, Texas)

• Carboniferous of Australia (15), Belize (3), Bolivia (1), Canada (1: Nunavut), China (2), India (3), Iran (2), Pakistan (1), the Russian Federation (2), Spain (1), Svalbard and Jan Mayen (1), Ukraine (4), United States (277: Alaska, Arizona, California, Illinois, Iowa, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Mexico, Ohio, Oklahoma, Pennsylvania, Texas, Utah, Wyoming)

Total: 1163 collections including 1308 occurrences