• Devonian of Canada (3: Nunavut collections), China (3), the Czech Republic (7), Poland (1), Tajikistan (1), Ukraine (1)

• Silurian to Devonian of Argentina (1), the Czech Republic (1), Italy (1), Poland (1)

• Silurian of Argentina (2), Belarus (2), Canada (1: Québec), China (3), the Czech Republic (18), Estonia (1), Greenland (1), Italy (7), Norway (5), Poland (3), the United Kingdom (9), United States (2: Illinois, Iowa)

• Dobrotivian of Portugal (3)

• Klabava of the Czech Republic (1)

• Ordovician of Australia (2), the Czech Republic (2), Morocco (1), Norway (1), Spain (1), Sweden (1), Turkey (1), the United Kingdom (4), United States (9: Alaska, Kentucky, Montana, Nevada, Utah, Virginia)

• Tremadoc of France (1), the United Kingdom (1)

• Cambrian of Canada (2: British Columbia)

Total: 104 collections each including a single occurrence