• Triassic of China (2 collections)

• Permian to Triassic of India (1)

• Permian of Afghanistan (3), Armenia (2), Australia (21), Azerbaijan (1), Bolivia (20), Cambodia (4), Canada (24: Alberta, British Columbia, Northwest Territories, Nunavut, Yukon), China (174), Croatia (2), Greece (3), Greenland (28), India (19), Indonesia (4), Japan (22), Laos (2), Malaysia (18), Mexico (28), Mongolia (10), Myanmar (8), Nepal (15), Oman (2), Pakistan (68), the Russian Federation (37), Svalbard and Jan Mayen (32), Tajikistan (2), Thailand (22), Ukraine (4), United States (372: Alaska, California, Idaho, Kansas, Montana, Nevada, New Mexico, Texas, Utah, Wyoming), Venezuela (4), Vietnam (1)

• Carboniferous to Permian of United States (3: Texas)

• Carboniferous of Canada (3: Nunavut), China (3), Spain (1), Svalbard and Jan Mayen (2), United States (181: Illinois, Iowa, Kansas, Maryland, Missouri, Nebraska, Nevada, New Mexico, Ohio, Pennsylvania, Texas, Utah)

Total: 1148 collections including 1419 occurrences