• Carboniferous of United States (1: Indiana collection)

• Devonian of Australia (3), Brazil (2), Canada (14: Manitoba, Northwest Territories, Northwest Territories and Yukon, Nunavut, Ontario, Yukon), China (25), the Czech Republic (18), Germany (4), Italy (1), Libya (1), Malaysia (2), Mongolia (4), Morocco (4), Poland (3), the Russian Federation (2), Spain (7), Tajikistan (5), Thailand (1), the United Kingdom (1), United States (81: Alaska, Indiana, Michigan, Nevada, New Jersey, New Mexico, New York, Ohio, Pennsylvania), Uruguay (1), Uzbekistan (1), Vietnam (3)

• Silurian of Bolivia (1), Canada (6: Northwest Territories)

• Ordovician of Canada (1: Nunavut)

Total: 192 collections including 218 occurrences