• Carboniferous of United States (1: Utah collection)

• Givetian of Morocco (2)

• Couvinien of Australia (1)

• Devonian of Afghanistan (14), Australia (21), Austria (4), Canada (22: Manitoba, Yukon), China (5), the Czech Republic (5), Germany (35), Japan (4), Mongolia (11), Morocco (6), Poland (2), the Russian Federation (15), Spain (8), Tajikistan (1), Thailand (1), the United Kingdom (4), United States (16: Alaska, Indiana, Kentucky, New Jersey, New York), Vietnam (11), Western Sahara (1)

• Niagaran of United States (2: Indiana, Ohio)

• Silurian of Australia (5), Canada (12: British Columbia, Nunavut, Ontario, Quebec), China (5), the Czech Republic (1), Estonia (5), India (2), Norway (2), the Russian Federation (7), Sweden (11), the United Kingdom (5), United States (5: Indiana, Iowa, Kentucky, New York, Ohio), Venezuela (1)

Total: 253 collections including 314 occurrences