• Triassic of United States (1: California collection)

• Permian of East Timor (1), Greece (1), Greenland (1), Italy (2), Japan (1), Kazakhstan (12), Mexico (2), Oman (1), the Russian Federation (9), Tajikistan (4), United States (2: Idaho, Texas)

• Carboniferous to Permian of Japan (2)

• Carboniferous of Japan (1), Kazakhstan (1), United States (69: Arkansas, California, Kansas, Missouri, Oklahoma, Texas)

• Devonian of Australia (8), Canada (3: Nunavut, Ontario), the Czech Republic (8), France (2), Germany (14), Morocco (11), Poland (1), the Russian Federation (10), South Africa (1), United States (8: Maryland, Montana, New York, Ohio, Pennsylvania), Vietnam (1), Western Sahara (1)

Total: 178 collections including 221 occurrences