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

• Devonian of Afghanistan (1), Algeria (3), Argentina (1), Australia (43), Austria (2), Belarus (2), Canada (63: British Columbia, Northwest Territories, Nova Scotia, Nunavut, Yukon), China (45), the Czech Republic (12), France (22), Germany (2), Kazakhstan (2), Kyrgyzstan (1), Mongolia (4), Morocco (4), Poland (3), the Russian Federation (23), Spain (4), Tajikistan (1), Ukraine (11), United States (63: Alaska, California, Indiana, Missouri, Nevada, New York, Oklahoma, Pennsylvania, Tennessee, West Virginia, West Virginia, Maryland, Pennsylvania), Vietnam (9)

• Jaani of Estonia (6), Lithuania (3)

• Niagaran of Canada (3: Québec)

• Silurian to Devonian of Algeria (1), Australia (1), Canada (2: Nova Scotia), United States (1: Oklahoma)

• Silurian of Argentina (1), Australia (13), Belarus (4), Canada (77: Manitoba, New Brunswick, Northwest Territories, Nova Scotia, Nunavut, Ontario, Quebec, Québec, Yukon, Yukon Territory), China (32), the Czech Republic (4), Estonia (32), Ireland (2), Jordan (2), Latvia (3), Lithuania (34), Mexico (15), Mongolia (6), Morocco (1), Norway (4), Poland (2), the Russian Federation (14), Spain (3), Sweden (36), Tajikistan (1), Ukraine (18), the United Kingdom (61), United States (87: Alaska, Arkansas, California, Illinois, Indiana, Iowa, Maine, Maryland, Michigan, Michigan and Ohio, Nevada, New Hampshire, New York, Oklahoma, Tennessee, Utah, Virginia, West Virginia, Wisconsin), Venezuela (2)

• Ordovician of United States (1: Illinois)

Total: 802 collections including 967 occurrences