• Triassic of Japan (5 collections)

• Permian of Australia (62), Brazil (1), Canada (1: Yukon), China (72), Croatia (1), Germany (2), Greece (5), Greenland (2), India (3), Italy (2), Japan (6), Laos (2), Lithuania (4), Mexico (2), Mongolia (1), Nepal (6), New Zealand (15), North Atlantic (1), Pakistan (6), Peru (2), the Russian Federation (58), Svalbard and Jan Mayen (5), Tunisia (1), the United Kingdom (19), United States (106: Alaska, California, Idaho, Kansas, Montana, Nevada, New Mexico, Texas, Utah, Wyoming), Venezuela (1)

• Namurian of Australia (3)

• Carboniferous to Permian of the Russian Federation (1), United States (2: California)

• Carboniferous of Antarctica (1), Argentina (14), Australia (11), Bosnia and Herzegovina (1), Chile (1), China (5), the Czech Republic (3), Germany (1), India (1), Ireland (3), Mexico (2), Peru (1), Spain (3), the United Kingdom (55), United States (54: Alabama, Alaska, Arizona, California, Colorado, Georgia, Illinois, Kansas, Kentucky, Missouri, Nevada, New Mexico, Ohio, Oklahoma, Tennessee, Texas, West Virginia)

• Devonian to Carboniferous of the United Kingdom (2)

• Devonian of Germany (4), the United Kingdom (3)

Total: 562 collections including 669 occurrences