• Carboniferous of Australia (3 collections), Canada (1: Alberta), United States (5: Alaska, Indiana, Montana)

• Devonian of Afghanistan (1), Algeria (2), Australia (6), China (1), Czechia (3), Germany (1), Kazakhstan (1), Poland (1), the Russian Federation (5), Tajikistan (1), United States (16: Alaska, Indiana, Missouri, New York, Pennsylvania, Tennessee, West Virginia, West Virginia, Maryland, Pennsylvania)

• Niagaran of Canada (2: Québec)

• Silurian to Devonian of Canada (2: Nova Scotia)

• Silurian of Australia (2), Belarus (2), Canada (18: Northwest Territories, Nova Scotia, Nunavut, Ontario, Quebec, Québec, Yukon, Yukon Territory), China (1), Estonia (14), Latvia (3), Lithuania (16), Mexico (12), Norway (3), Poland (1), the Russian Federation (5), Spain (1), Sweden (20), Tajikistan (1), Ukraine (9), the United Kingdom (7), United States (27: Alaska, Indiana, Iowa, Maine, Maryland, Nevada, New York, Oklahoma, West Virginia), Venezuela (1)

• Ordovician of United States (1: Illinois)

Total: 195 collections including 215 occurrences