• Devonian of Australia (6 collections), Canada (11: Northwest Territories, Nunavut, Ontario, Yukon), China (4), the Czech Republic (2), United States (5: Nevada, West Virginia, Maryland, Pennsylvania)

• Whitwellian of Canada (3: Northwest Territories)

• Jaani of Estonia (24), Lithuania (3)

• Niagaran of Canada (1: Québec)

• Silurian to Devonian of Australia (1)

• Silurian of Argentina (1), Australia (2), Belarus (4), Canada (69: British Columbia, Manitoba, New Brunswick, Northwest Territories, Nova Scotia, Nunavut, Ontario, Quebec, Québec, Yukon, Yukon Territory), China (9), the Czech Republic (3), Estonia (40), Greenland (2), Iran (1), Ireland (1), Kazakhstan (9), Lithuania (12), Norway (40), the Russian Federation (9), Sweden (26), Ukraine (3), the United Kingdom (76), United States (118: Alabama, Arkansas, California, Illinois, Indiana, Iowa, Maine, Missouri, Nevada, New York, Oklahoma, Tennessee, Utah, Wisconsin), Venezuela (2)

• Dobrotivian of France (1)

• Chazyan of Canada (9: Northwest Territories, Quebec), United States (10: New York, Tennessee, Virginia)

• Whiterockian of United States (9: Nevada, Oklahoma)

• Fennian of Canada (1: New Brunswick)

• Arenig of Canada (1: New Brunswick), China (1)

• Ordovician to Silurian of Canada (1: British Columbia), Norway (1), United States (1: Illinois)

• Ordovician of Argentina (1), Australia (18), Belarus (2), Belgium (2), Canada (68: Manitoba, Newfoundland, Northwest Territories, Nunavut, Nunvait, Ontario, Quebec, Québec), China (15), Estonia (17), France (2), Ireland (12), Kazakhstan (12), Latvia (6), Lithuania (11), Mongolia (6), Norway (20), Portugal (2), the Russian Federation (40), Spain (4), Sweden (5), Turkey (1), the United Kingdom (72), United States (231: Alaska, California, Georgia, Idaho, Illinois, Iowa, Kentucky, Michigan, Minnesota, Missouri, Nevada, New York, Oklahoma, Pennsylvania, Tennessee, Virginia, Wisconsin, Wyoming), Venezuela (1)

• Ibexian of United States (1: Nevada)

Total: 1071 collections including 1276 occurrences