• Triassic of Australia (2 collections), Austria (6), Bosnia and Herzegovina (1), Canada (1: British Columbia), China (1), Hungary (3), Italy (12), Malaysia (1), Papua New Guinea (1), Serbia and Montenegro (1), Slovakia (2), Slovenia (2), Spain (2), Thailand (1), Tunisia (1), Turkey (4), United States (4: Alaska, Nevada, Oregon)

• Permian of Armenia (14), Australia (1), Azerbaijan (26), China (18), Greece (2), India (1), Indonesia (1), Iran (14), Italy (3), Japan (22), Malaysia (1), Mongolia (1), the Russian Federation (1), Slovenia (1), Tajikistan (6), Thailand (1), Turkey (5), Ukraine (1), United States (1: Texas)

• Carboniferous to Devonian of Uzbekistan (1)

• Carboniferous to Permian of Italy (6)

• Carboniferous of Algeria (1), Belgium (2), Canada (6: Alberta, Nunavut), China (3), Egypt (1), France (4), Greenland (1), Ireland (10), Mexico (1), Morocco (3), Norway (4), the Russian Federation (18), Spain (3), Thailand (5), Turkey (2), Ukraine (1), the United Kingdom (67), United States (132: Alabama, Alaska, California, Idaho, Indiana, Iowa, Kansas, Kentucky, Missouri, Nebraska, Nevada, New Mexico, Ohio, Oklahoma, Pennsylvania, Texas, Wyoming), Uzbekistan (1)

• Devonian of Belgium (1), China (2), Germany (1), Poland (2), the Russian Federation (1), Uzbekistan (1), Vietnam (2)

Total: 447 collections including 724 occurrences