• Triassic of Turkey (1 collection)

• Permian of Canada (2: British Columbia), China (7), Guatemala (5), Hungary (2), Israel (1), Japan (1), Serbia and Montenegro (2), Thailand (2), United States (7: Kansas, Wyoming)

• Desmoinesian of United States (3: Missouri)

• Pennsylvanian of United States (4: Oklahoma)

• Carboniferous of Canada (1: Alberta), the United Kingdom (6), United States (10: Kansas, Kentucky, Oklahoma)

• Devonian of Canada (1: Ontario), China (3), France (4), Germany (1), Morocco (4), Poland (1), the Russian Federation (1), United States (15: Illinois, Michigan, New York, Ohio)

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

• Silurian of Australia (1), Canada (1: Ontario), Germany (2), United States (65: Maryland, New York, Oklahoma, Pennsylvania, Virginia, West Virginia)

• Ordovician of Canada (1: Northwest Territories), Sweden (1), United States (2: Iowa, Minnesota)

Total: 158 collections including 247 occurrences