• Triassic of China (9 collections), India (2), Pakistan (1)

• Permian to Triassic of India (4)

• Permian of Afghanistan (8), Armenia (14), Australia (21), Austria (1), Azerbaijan (28), Bolivia (20), Cambodia (5), Canada (27: Alberta, British Columbia, Northwest Territories, Nunavut, Yukon), China (487), Croatia (2), East Timor (1), Greece (35), Greenland (30), Hungary (1), India (19), Indonesia (6), Iran (120), Italy (3), Japan (34), Laos (2), Madagascar (1), Malaysia (19), Mexico (34), Mongolia (12), Myanmar (8), Nepal (17), Oman (3), Pakistan (257), the Russian Federation (69), Slovenia (2), Svalbard and Jan Mayen (33), Tajikistan (3), Thailand (38), Tunisia (1), Turkey (23), Ukraine (6), the United Arab Emirates (1), United States (474: Alaska, Arizona, California, Idaho, Kansas, Montana, Nevada, New Mexico, Oregon, Texas, Utah, Wyoming), Venezuela (4), Vietnam (2)

• Carboniferous to Permian of United States (4: California, Texas)

• Carboniferous of Canada (5: Nunavut, Yukon), China (6), South Korea (1), Spain (1), Svalbard and Jan Mayen (4), the United Kingdom (1), United States (357: Alaska, Arizona, Arkansas, California, Colorado, Illinois, Iowa, Kansas, Kentucky, Maryland, Missouri, Montana, Nebraska, Nevada, New Mexico, Ohio, Oklahoma, Pennsylvania, Texas, Utah, Wyoming)

Total: 2266 collections including 3328 occurrences