• Triassic of China (10 collections), Italy (1)

• Permian of Afghanistan (2), Armenia (15), Australia (3), Austria (2), Azerbaijan (25), Canada (1: Nunavut), China (56), Croatia (2), Greece (3), Hungary (3), India (3), Indonesia (1), Iran (59), Israel (16), Italy (10), Japan (55), Malaysia (2), the Russian Federation (4), Slovenia (1), Tajikistan (11), Thailand (5), Tunisia (2), Turkey (18), Ukraine (4), the United Arab Emirates (1), United States (1: Texas), Venezuela (1)

• Carboniferous to Permian of Italy (2), the Russian Federation (1)

• Carboniferous of Canada (2: Nunavut), France (2), Kazakhstan (1), Mexico (1), Morocco (2), Norway (5), the Russian Federation (19), Spain (2), Thailand (6), Turkey (4), the United Kingdom (1), United States (60: Idaho, Iowa, Kansas, Missouri, Nebraska, Nevada, New Mexico, Oklahoma, Texas, Wyoming), Uzbekistan (1)

Total: 426 collections including 665 occurrences