• Devonian of Canada (4: Northwest Territories, Yukon collections), China (1), the Czech Republic (15), Germany (1), Kazakhstan (1), Morocco (3), the Russian Federation (13), Tajikistan (1), Ukraine (8)

• Whitwellian of Canada (2: Northwest Territories)

• Jaani of Lithuania (2)

• Niagaran of Canada (2: Québec)

• Silurian of Afghanistan (1), Australia (3), Canada (60: British Columbia, Northwest Territories, Nunavut, Ontario, Quebec, Québec, Yukon), the Czech Republic (9), Estonia (3), Iran (1), Latvia (1), Lithuania (13), Norway (2), the Russian Federation (14), Sweden (13), Ukraine (1), the United Kingdom (43), United States (44: Alaska, Arkansas, Illinois, Indiana, Iowa, Nevada, New York, Oklahoma, Wisconsin), Venezuela (1)

Total: 262 collections including 299 occurrences