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

• 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 (185: Illinois, Iowa, Kansas, Maryland, Missouri, Nebraska, Nevada, New Mexico, Ohio, Pennsylvania, Texas, Utah)

Total: 1153 collections including 1424 occurrences