• Permian of China (1 collection), the Russian Federation (2), United States (8: Nevada, New Mexico, Texas)

• Carboniferous to Permian of United States (2: California)

• Carboniferous of United States (9: Arizona, California)

• Givetian of France (3)

• Devonian of Australia (4), Canada (1: Northwest Territories), the Czech Republic (3), Germany (1), Kazakhstan (1), Poland (3), United States (8: Alaska, New York, Ohio)

• Silurian of Canada (2: Ontario), China (1), the Czech Republic (3), Greenland (1), Norway (2), Sweden (4), Ukraine (1), United States (10: Iowa, Ohio, Virginia, Wisconsin)

• Uhaku of Estonia (1)

• Chazyan of United States (5: New York)

• Whiterockian of Canada (1: Newfoundland and Labrador), United States (2: Nevada)

• Fennian of Malaysia (3)

• Ordovician of Canada (64: Manitoba, Newfoundland, Newfoundland and Labrador, Northwest Territories, Nunavut, Ontario, Quebec, Québec), China (1), Estonia (20), Germany (1), Greenland (2), North Korea (1), Norway (2), Sweden (1), the United Kingdom (1), United States (91: Alaska, California, Georgia, Illinois, Iowa, Kentucky, Minnesota, Missouri, Nevada, New Mexico, New York, Ohio, Tennessee, Vermont, Virginia, Wisconsin)

Total: 266 collections including 498 occurrences