• Permian of Afghanistan (1 collection), Armenia (4), Bolivia (18), Canada (1: Nunavut), China (21), Greece (1), Guatemala (1), Indonesia (2), Iran (4), Japan (3), Malaysia (5), Myanmar (2), New Zealand (1), Oman (1), Pakistan (6), Peru (1), the Russian Federation (3), Thailand (14), United States (143: Alaska, California, Kansas, Nevada, Oregon, Texas), Vietnam (1)

• Virgilian of United States (14: Illinois, Iowa, Kansas, Ohio, Oklahoma, Texas)

• Desmoinesian of United States (8: Illinois, Iowa, Missouri, Oklahoma)

• Pennsylvanian of United States (2: California)

• Chesterian of United States (5: Alabama, Arkansas, California)

• Osagean of Canada (2: Alberta, Northwest Territories), United States (9: California, Indiana, Kentucky, Montana, Utah)

• Carboniferous to Permian of United States (2: California)

• Carboniferous of Australia (46), Belgium (1), Bolivia (1), Brazil (1), Canada (13: Alberta, Northwest Territories, Nunavut, Yukon), China (5), Egypt (1), Iran (2), Ireland (2), Italy (1), Libya (5), Mexico (1), Morocco (1), Nepal (1), Pakistan (2), Peru (3), the Russian Federation (1), South Korea (2), the United Kingdom (52), United States (176: Alaska, Arizona, Arkansas, California, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Missouri, Montana, Nebraska, Nevada, New Mexico, New mexico, Ohio, Oklahoma, Tennessee, Texas, Utah)

• Mississippian of United States (8: Alaska, Arizona, Indiana)

• Devonian to Carboniferous of the United Kingdom (5)

• Devonian of Afghanistan (5), Algeria (1), Australia (16), Brazil (2), Canada (20: Alberta, British Columbia, Nunavut, Ontario, Quebec, Yukon, Yukon Territory), China (11), Colombia (9), the Czech Republic (10), France (8), Germany (17), Libya (5), Morocco (6), Myanmar (2), the Russian Federation (9), Spain (3), Tajikistan (1), Ukraine (9), the United Kingdom (7), United States (400: Alaska, California, Indiana, Iowa, Maryland, Michigan, Missouri, Montana, Nevada, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, West Virginia, West Virginia, Maryland, Pennsylvania), Venezuela (1), Vietnam (4)

• Silurian to Devonian of Australia (1), United States (1: Oklahoma)

• Niagaran of Canada (2: Québec), United States (1: Indiana)

• Silurian of Argentina (2), Australia (1), Belarus (4), Bolivia (1), Canada (75: New Brunswick, Northwest Territories, Nova Scotia, Nunavut, Ontario, Quebec, Québec, Yukon, Yukon Territory), China (4), the Czech Republic (9), Estonia (72), Ireland (2), Kazakhstan (1), Lithuania (35), Mexico (10), Mongolia (1), New Zealand (1), Norway (11), Poland (1), the Russian Federation (17), Spain (1), Sweden (21), Ukraine (7), the United Kingdom (180), United States (135: Alabama, Georgia, Illinois, Indiana, Iowa, Kentucky, Maine, Missouri, Nevada, New York, Oklahoma, Tennessee, West Virginia, Wisconsin), Venezuela (2)

• Ordovician to Silurian of Canada (1: New Brunswick)

• Ordovician of Canada (32: Quebec, Québec), China (1), Estonia (5), Latvia (3), Morocco (1), Norway (1), United States (2: Missouri)

Total: 1795 collections including 1950 occurrences