• Permian of Australia (4 collections), China (18), Greece (12), Indonesia (4), Iran (6), Italy (6), Japan (7), Malaysia (1), Myanmar (1), Oman (3), Pakistan (27), Thailand (9), United States (48: Alaska, California, Nevada, Texas), Vietnam (1)

• Carboniferous to Permian of China (1), United States (4: California)

• Carboniferous of Australia (35), Canada (2: Alberta, Northwest Territories), Chile (1), China (4), the Czech Republic (1), Ireland (1), Italy (1), Libya (5), Mexico (1), the Russian Federation (1), the United Kingdom (12), United States (95: Arkansas, California, Colorado, Idaho, Illinois, Indiana, Iowa, Iowa/Illinois, Kentucky, Missouri, Montana, Nevada, Oklahoma, Tennessee, Texas, Utah, Virginia, Wyoming)

• Devonian of Afghanistan (2), Australia (6), Belgium (14), Bolivia (29), Brazil (23), Canada (25: Alberta, British Columbia, New Brunswick, Northwest Territories, Nova Scotia, Nunavut, Ontario, Quebec, Yukon), China (9), France (1), Germany (13), Libya (3), Poland (4), the Russian Federation (2), United States (201: California, Colorado, Iowa, Maryland, Maryland, West Virginia, Virginia, Michigan, Missouri, Montana, Nevada, New Mexico, New York, Ohio, Pennsylvania, Virginia, West Virginia, West Virginia, Maryland, Pennsylvania), Uruguay (1)

• Niagaran of United States (1: Indiana)

• Silurian to Devonian of United States (1: Oklahoma)

• Silurian of Australia (1), Canada (10: Northwest Territories, Yukon), Greenland (1), the United Kingdom (3), United States (59: Alaska, Indiana, Maryland, Michigan and Ohio, Missouri, New York, Oklahoma, Virginia, West Virginia)

• Ordovician of United States (4: Illinois, Ohio)

Total: 724 collections including 776 occurrences