• Permian of Afghanistan (5 collections), Armenia (3), Australia (12), Austria (3), Azerbaijan (1), Bolivia (1), Canada (5: British Columbia, Nunavut), China (19), India (1), Indonesia (2), Iran (25), Italy (2), Japan (4), Malaysia (1), Mongolia (3), Nepal (1), Oman (20), Pakistan (1), Peru (3), the Russian Federation (49), Slovenia (1), Svalbard and Jan Mayen (7), Tajikistan (4), Thailand (5), Timor-Leste (2), Tunisia (1), the United Arab Emirates (2), United States (5: Arizona, Nevada, Texas, Washington)

• Carboniferous of Australia (4), China (1), Germany (2), Japan (4), Mexico (1), Mongolia (1), Peru (1), the Russian Federation (1), Spain (5), the United Kingdom (2), United States (50: Alabama, Alaska, Arizona, Indiana, New Mexico, Oklahoma, Tennessee, Texas, Utah)

• Devonian of United States (21: Michigan, Missouri, Ohio)

• Ordovician of France (2), Spain (3)

Total: 286 collections including 346 occurrences