• Triassic of Afghanistan (1 collection), Austria (19), Bosnia and Herzegovina (6), Canada (1: British Columbia), China (1), Germany (1), Hungary (14), India (6), Indonesia (1), Israel (5), Italy (5), Jordan (1), Kazakhstan (3), Malaysia (1), Nepal (1), Romania (1), the Russian Federation (100), Slovakia (1), Slovenia (1), Spain (2), Svalbard and Jan Mayen (2), Switzerland (1), Türkiye (1), United States (20: Alaska, California, Idaho, Montana, Nevada, Utah)

• Permian of Armenia (8), Australia (1), Azerbaijan (16), China (23), Indonesia (2), Iran (25), Italy (7), Japan (7), Kazakhstan (4), Malaysia (1), Mexico (1), Pakistan (19), the Russian Federation (16), Tajikistan (5), Ukraine (1), United States (37: Arizona, Kansas, Nebraska, Nevada, New Mexico, Texas, Utah, Wyoming)

• Carboniferous to Permian of the Russian Federation (2)

• Carboniferous of Kazakhstan (9), Kyrgyzstan (1), the Russian Federation (8), Ukraine (7), the United Kingdom (4), United States (42: Arkansas, Illinois, Kansas, Kentucky, Missouri, New Mexico, Ohio, Oklahoma, Pennsylvania, Texas, Utah)

Total: 441 collections including 595 occurrences