• Carboniferous of Ireland (1 collection)

• Devonian of Canada (6: New Brunswick, Nunavut, Quebec, Yukon), Colombia (1), the Czech Republic (10), Germany (3), United States (1: New York)

• Silurian of Australia (1), Canada (3: Ontario, Québec), China (9), the Czech Republic (12), Sweden (1), the United Kingdom (2), United States (35: Alaska, Illinois, Indiana, Iowa, New York, Oklahoma, Wisconsin)

• Whiterockian of United States (1: Nevada)

• Klabava of the Czech Republic (1)

• Dawan of China (3)

• Arenig of Argentina (1), Australia (1), Bolivia (1), China (8), France (1), Morocco (1), United States (1: Montana)

• Ordovician to Silurian of the Russian Federation (1)

• Ordovician of Algeria (1), Argentina (2), Australia (1), Belarus (1), Canada (4: Manitoba, Ontario, Quebec), China (13), the Czech Republic (2), Estonia (6), France (1), Latvia (3), Lithuania (8), New Zealand (2), Norway (3), the Russian Federation (9), Spain (3), Sweden (1), the United Kingdom (3), United States (15: Minnesota, Montana, Nevada, New York, Ohio, Oklahoma, Pennsylvania, Utah), Venezuela (1)

• Canadian of United States (2: Idaho, Utah)

• Tremadoc of Argentina (3), Bolivia (3), Canada (1: Newfoundland and Labrador), China (47), the Czech Republic (1), France (1), Morocco (1), the Russian Federation (6), Sweden (1), United States (6: Montana, New York, Utah, Vermont)

• Delamaran of Canada (4: British Columbia)

• Cambrian of Australia (1), Canada (7: British Columbia, Newfoundland, Northwest Territories), China (1), Poland (1), the Russian Federation (3), United States (5: Alaska, Montana, Wisconsin)

Total: 278 collections including 455 occurrences