• 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), Czechia (3), Estonia (1), Greenland (1), India (3), Mongolia (1), North Atlantic (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 (4), Latvia (1), Lithuania (1), Mongolia (5), the Russian Federation (17), Sweden (1), United States (4: Alaska)

Total: 251 collections including 372 occurrences