• Triassic of China (1 collection), Malaysia (1)

• Permian of Armenia (11), Azerbaijan (15), Bolivia (1), Canada (1: Nunavut), China (50), Croatia (1), Greece (2), Indonesia (1), Iran (39), Italy (2), Japan (39), Oman (1), Slovenia (1), Svalbard and Jan Mayen (1), Tajikistan (12), Thailand (5), Turkey (10), Ukraine (3), United States (2: California)

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

• Carboniferous of Austria (1), Canada (4: Nunavut), France (2), Ireland (2), Mexico (1), Morocco (1), the Russian Federation (11), Spain (5), Thailand (3), Turkey (3), Ukraine (3), the United Kingdom (7), United States (68: Iowa, Kansas, Missouri, Nebraska, Nevada, New Mexico, Oklahoma, Texas, Wyoming), Uzbekistan (1)

Total: 314 collections including 378 occurrences