• Couvinien of Australia (1 collection)

• Devonian of Brazil (1), China (4), Poland (1), Ukraine (1), the United Kingdom (1)

• Silurian of Brazil (1), the United Kingdom (1)

• Dobrotivian of France (1), Portugal (1)

• Uhaku of the Russian Federation (17)

• Whiterockian of United States (3: Nevada)

• Chazyan of Canada (4: Northwest Territories, Ontario, Quebec)

• Volkhov of Sweden (1)

• Ordovician of Canada (8: Northwest Territories, Nunavut, Ontario, Quebec), China (7), Estonia (1), North Korea (1), Norway (2), the Russian Federation (9), Spain (1), Sweden (6), the United Kingdom (18), United States (18: Iowa, Michigan, Minnesota, Missouri, Nevada, New York, Ohio)

• Tremadoc of China (3)

Total: 112 collections including 149 occurrences