• Devonian of the Czech Republic (1 collection)

• Silurian of Australia (13), Belarus (1), Canada (17: Northwest Territories, Nunavut, Ontario), China (15), the Czech Republic (19), Estonia (3), Kazakhstan (1), Latvia (3), Lithuania (22), Mongolia (1), the Russian Federation (22), Ukraine (5), United States (8: Alaska, California, Iowa, Nevada)

Total: 131 collections including 152 occurrences