• 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), Czechia (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), Czechia (6), France (1), Mexico (3), the Russian Federation (1), Sweden (3), the United Kingdom (5), United States (3: Indiana, Ohio, Tennessee)

• Dobrotivian of Czechia (1), France (2), Spain (4)

• Whiterockian of United States (3: Nevada)

• Arenigian of United States (1: Utah)

• Klabava of Czechia (1)

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

• Ordovician of Argentina (8), Bolivia (3), Canada (7: Alberta, British Columbia, Ontario, Quebec), China (12), Colombia (1), Czechia (8), Estonia (2), France (10), Iran (1), Mexico (2), Morocco (4), Norway (6), the Russian Federation (2), Spain (3), Sweden (4), the United Kingdom (15), United States (25: Alaska, California, Iowa, Kentucky, Missouri, New York, North Dakota, Ohio, Texas, Vermont, Virginia)

• 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: 318 collections including 353 occurrences