• Devonian of Australia (4 collections), United States (2: New York)

• Silurian of Australia (3), Belarus (2), Canada (43: New Brunswick, Northwest Territories, Nunavut, Ontario, Quebec, Québec), China (14), the Czech Republic (3), Estonia (2), Greenland (1), India (3), Mongolia (1), the Russian Federation (14), Sweden (14), Ukraine (4), the United Kingdom (2), United States (21: California, Indiana, Iowa, Kentucky, Ohio), Uzbekistan (1)

• Ordovician to Silurian of Canada (1: Québec), the Russian Federation (1)

• Ordovician of Australia (20), Canada (25: Manitoba, Northwest Territories, Nunavut, Ontario, Quebec), China (34), Estonia (3), Kazakhstan (3), Latvia (1), Lithuania (1), Mongolia (5), the Russian Federation (17), Sweden (1), United States (4: Alaska)

Total: 250 collections including 370 occurrences