• Silurian of Algeria (4 collections), Andorra (1), Australia (3), Canada (16: Cape Manning, Northwest Territories, Nunavut, Yukon), China (31), the Czech Republic (9), Denmark (10), France (5), Greenland (1), Guinea (1), Lithuania (7), Morocco (6), Poland (1), the Russian Federation (10), Saudi Arabia (1), Serbia and Montenegro (8), Sweden (2), the United Kingdom (11), United States (26: Alaska, California, Idaho, New York), Uzbekistan (2), Western Sahara (2)

• Uhaku of Lithuania (1), Sweden (3)

• Dobrotivian of Portugal (2), Spain (2)

• Whiterockian of Canada (2: Newfoundland and Labrador)

• Arenig of China (20), Norway (2)

• Ningkuo of China (10)

• Dawan of China (2)

• Ordovician to Silurian of the Russian Federation (1), United States (1: Alaska)

• Ordovician of Argentina (9), Australia (2), Canada (20: Northwest Territories, Nunavut, Québec, Yukon), China (61), the Czech Republic (3), Estonia (3), Latvia (1), Lithuania (2), New Zealand (3), Norway (5), Peru (1), the Russian Federation (8), Spain (1), Sweden (3), the United Kingdom (1), United States (27: Alaska, Idaho, Nevada, New York, Tennessee), Venezuela (1)

Total: 354 collections including 456 occurrences