• Carboniferous of Canada (1: Alberta collection)

• Devonian of Argentina (1), Australia (5), Brazil (6), Canada (3: New Brunswick, Ontario, Quebec), China (1), Colombia (1), United States (51: Indiana, New York, Pennsylvania, Virginia)

• Jaani of Estonia (2), Lithuania (2)

• Silurian of Australia (2), Brazil (1), Canada (10: Nova Scotia, Ontario, Québec), China (9), Czechia (3), Estonia (3), Ireland (1), Latvia (2), Lithuania (25), Mexico (5), Norway (3), the Russian Federation (2), Sweden (5), the United Kingdom (79), United States (38: California, Illinois, Indiana, Maryland, Michigan and Ohio, New York, Oklahoma, Tennessee)

• Ordovician of Canada (20: Ontario, Quebec), China (8), Czechia (2), Estonia (9), Iran (2), Kazakhstan (6), Myanmar (1), Portugal (4), the Russian Federation (2), Sweden (3), the United Kingdom (38), United States (53: Illinois, Iowa, Kentucky, Michigan, Minnesota, New York, Ohio, Oklahoma, Pennsylvania, Virginia)

• Cambrian of Greenland (2)

Total: 411 collections including 417 occurrences