• Permian of Australia (23 collections), China (32), Greece (2), Greenland (1), India (4), Iran (1), Japan (3), Lithuania (1), Madagascar (1), Malaysia (1), Mongolia (1), Oman (1), Pakistan (1), Poland (1), the Russian Federation (22), Tunisia (5), the United Kingdom (8), United States (3: Arizona, Nevada, Wyoming)

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

• Carboniferous of Antarctica (1), Argentina (8), Mexico (3), Ukraine (6), the United Kingdom (1), United States (110: Alabama, Arizona, Arkansas, California, Illinois, Indiana, Kansas, Kentucky, Montana, Nevada, New Mexico, Ohio, Oklahoma, Pennsylvania, Texas, Virginia, West Virginia, Wyoming)

• Devonian of Antarctica (1), Australia (1), Luxembourg (2), Morocco (3), New Zealand (5), Türkiye (1), United States (33: Missouri, New York)

• Ordovician of China (1)

Total: 289 collections including 317 occurrences