• Triassic of Hungary (1 collection), Italy (1)

• Permian of Canada (1: Alberta), China (2), Greece (1), Malaysia (1), the Russian Federation (3), United States (21: Arizona, New Mexico, Texas)

• Virgilian of United States (3: Illinois, Nevada)

• Chesterian of United States (2: Illinois)

• Carboniferous of Antarctica (1), Australia (2), Canada (1: Alberta), Ireland (2), Poland (1), the Russian Federation (2), the United Kingdom (3), United States (5: Indiana, Kansas, Nevada, Texas)

• Devonian of Australia (1), Austria (1), Canada (2: Northwest Territories), the Czech Republic (1), South Africa (1)

• Silurian of Canada (1: Ontario), the Czech Republic (4)

• Ordovician of Canada (19: Nunavut, Ontario, Quebec, Québec), the Czech Republic (11), France (2), Greenland (1), Norway (6), the Russian Federation (1), South Korea (1), Spain (5), the United Kingdom (4), United States (49: Illinois, Iowa, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, New York, Ohio, Pennsylvania, Tennessee, Vermont, Wisconsin)

• Chazy of United States (15: New York)

• Whiterockian of Canada (1: Newfoundland and Labrador), United States (1: Nevada)

• Cassinian of Canada (3: Ontario, Quebec), United States (1: Minnesota)

• Cambrian of United States (1: Wisconsin)

Total: 185 collections including 226 occurrences