• Permian of Argentina (1 collection), China (2), India (1), Pakistan (11), United States (1: Texas)

• Carboniferous of Argentina (1), Australia (10), Belgium (2), China (1), Morocco (1), United States (23: Arkansas, California, Indiana, Kentucky, Missouri, Ohio, Oklahoma, Texas, Utah, Virginia)

• Givetian of France (2)

• Devonian of Australia (17), Austria (10), Brazil (1), Canada (2: Ontario, Quebec), China (2), the Czech Republic (5), France (1), Germany (2), Japan (1), Kazakhstan (9), Luxembourg (3), Morocco (3), South Africa (1), the United Kingdom (2), United States (28: Illinois, Maine, Michigan, Nevada, New York, Ohio), Vietnam (1)

• Silurian of Australia (2), Canada (3: Nova Scotia, Québec), the Czech Republic (6), France (1), Mexico (3), the Russian Federation (1), Sweden (3), the United Kingdom (5), United States (3: Indiana, Ohio, Tennessee)

• Dobrotivian of the Czech Republic (1), France (2), Spain (4)

• Whiterockian of United States (3: Nevada)

• Fennian of France (1)

• Arenigian of United States (1: Utah)

• Arenig of Argentina (1), Australia (1), Bolivia (1), France (2), United States (3: Montana, Nevada)

• Klabava of the Czech Republic (1)

• Ordovician of Argentina (2), Bolivia (1), Canada (7: Alberta, British Columbia, Ontario, Quebec), China (11), the Czech Republic (9), Estonia (2), France (4), Iran (1), Morocco (4), Norway (6), the Russian Federation (2), Spain (3), Sweden (4), the United Kingdom (14), United States (25: Alaska, California, Iowa, Kentucky, Missouri, New York, North Dakota, Ohio, Texas, Vermont, Virginia)

• Tremadoc of Argentina (6), Bolivia (2), China (1), Colombia (1), France (5), Mexico (2)

• Cressagian of the United Kingdom (1)

• Skullrockian of Canada (1: British Columbia)

• Cambrian of Antarctica (2), Argentina (2), Canada (1: Quebec), China (1), United States (7: Colorado, Minnesota, Missouri, New York)

Total: 319 collections including 354 occurrences