• Eocene of United States (1: Virginia collection)

• Cretaceous of Brazil (1)

• Triassic of China (1), the Russian Federation (3), United States (31: Arizona, California, Idaho, Nevada, Utah, Wyoming)

• Permian of Afghanistan (1), Armenia (4), Australia (3), Azerbaijan (14), Canada (2: Nunavut), China (80), Croatia (1), Germany (4), Greece (2), India (1), Indonesia (2), Iran (13), Italy (7), Japan (2), Laos (2), Malaysia (1), Mexico (13), Myanmar (2), Nepal (2), New Zealand (2), Oman (1), Pakistan (133), the Russian Federation (14), Slovenia (1), Tajikistan (17), Thailand (16), Tunisia (5), Turkey (1), Ukraine (32), United States (180: Nevada, New Mexico, Oregon, Texas, Utah), Venezuela (4)

• Namurian of Australia (4), Thailand (1)

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

• Carboniferous of Australia (16), Canada (13: Alberta, Nunavut), China (3), Ireland (1), Mexico (1), the United Kingdom (8), United States (99: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Idaho, Idaho-Utah, Illinois, Indiana, Iowa, Kentucky, Missouri, Montana, Nevada, New Mexico, Oklahoma, Texas, Virginia, Wyoming)

• Givetian of United States (1: Missouri)

• Devonian of Argentina (1), Bolivia (7), Brazil (6), Canada (18: Alberta, Manitoba, Northwest Territories, Nunavut, Ontario, Quebec), China (1), Colombia (12), the Czech Republic (1), France (9), Germany (7), Luxembourg (1), Morocco (1), Myanmar (2), New Zealand (1), the Russian Federation (10), South Africa (3), Spain (2), United States (159: Alaska, Colorado, Indiana, Iowa, Michigan, Missouri, Montana, Nevada, New Mexico, New York, Ohio, Pennsylvania, Wisconsin)

Total: 989 collections including 1590 occurrences