• Eocene of Somalia (1 collection)

• Triassic of China (11), Italy (1), Malaysia (1)

• Permian of Afghanistan (2), Armenia (19), Australia (3), Austria (2), Azerbaijan (28), Bolivia (1), Canada (1: Nunavut), China (81), Croatia (2), Greece (3), Hungary (3), India (4), Indonesia (1), Iran (88), Israel (16), Italy (10), Japan (99), Malaysia (3), Norway (1), Oman (1), the Russian Federation (4), Slovenia (1), Svalbard and Jan Mayen (1), Tajikistan (17), Thailand (5), Tunisia (2), Turkey (26), Ukraine (5), the United Arab Emirates (1), United States (3: California, Texas), Venezuela (1)

• Carboniferous to Permian of Italy (7), the Russian Federation (1), Svalbard and Jan Mayen (1)

• Carboniferous of Austria (1), Belgium (1), Canada (5: Nunavut), France (3), Ireland (3), Kazakhstan (1), Mexico (1), Morocco (3), Norway (7), the Russian Federation (20), Spain (5), Thailand (6), Turkey (6), Ukraine (3), the United Kingdom (8), United States (87: Idaho, Iowa, Kansas, Missouri, Nebraska, Nevada, New Mexico, Oklahoma, Texas, Wyoming), Uzbekistan (1)

Total: 618 collections including 1221 occurrences