• Devonian of Germany (1 collection), Spain (1), United States (3: Nevada)

• Silurian of Canada (5: British Columbia), Greenland (1), Portugal (1), United States (1: Nevada)

• Klabava of Czechia (1)

• Ordovician of Argentina (2), the United Kingdom (5), United States (2: Idaho, New York)

• Cambrian to Ordovician of Argentina (1)

• Cambrian of Argentina (4), Canada (14: British Columbia), China (38), Denmark (2), Italy (1), Mexico (3), Norway (2), the Russian Federation (18), the United Kingdom (2), United States (23: Georgia, New York, Pennsylvania, Utah, Vermont)

• Solvan of Argentina (1), Canada (1: British Columbia)

• Amgan of Norway (1)

• Ediacaran of Namibia (1)

Total: 135 collections including 206 occurrences