• Triassic of Iran (2 collections), Italy (8), Japan (3)

• Permian of China (1), Japan (2), United States (22: Alaska, California, Oklahoma, Texas)

• Carboniferous of Antarctica (1), Canada (1: Alberta), Spain (1), the United Kingdom (3), United States (6: Alaska, Oklahoma, Texas)

• Devonian of Argentina (1), Australia (1), Belarus (2), China (3), the Czech Republic (9), France (1), Germany (10), Mongolia (1), Morocco (5), New Zealand (4), Poland (1), the Russian Federation (1), Spain (12), Ukraine (2), United States (21: Iowa, Michigan, Missouri, New York, Ohio), Western Sahara (1)

• Niagaran of United States (1: New York)

• Silurian of Belarus (5), Canada (1: Ontario), China (1), Mongolia (3), Norway (1), the Russian Federation (4), Sweden (2), the United Kingdom (21), United States (8: Indiana, New York)

• Dobrotivian of France (1)

• Uhaku of the Russian Federation (1), Sweden (1)

• Chazyan of Canada (2: Northwest Territories), United States (2: Virginia)

• Arenig of the Russian Federation (1)

• Ordovician of Argentina (2), Canada (14: Northwest Territories, Ontario), China (2), Estonia (8), France (2), India (3), Italy (1), Libya (1), Morocco (2), Norway (1), the Russian Federation (3), Spain (1), Sweden (4), the United Kingdom (1), United States (109: Georgia, Indiana, Iowa, Wisconsin, Illinois, Kentucky, Maryland, Michigan, Minnesota, Minnesota, Iowa, Wisconsin, Illinois, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, Wisconsin, Wisconsin, Illinois, Iowa)

Total: 334 collections including 515 occurrences