• Silurian of Algeria (4 collections), Andorra (1), Australia (3), Canada (12: Northwest Territories, Nunavut, Yukon), China (29), the Czech Republic (9), Denmark (11), France (3), Greenland (1), Guinea (1), Lithuania (7), Morocco (6), Poland (1), the Russian Federation (6), Saudi Arabia (1), Serbia and Montenegro (8), Sweden (2), the United Kingdom (9), United States (26: Alaska, California, Idaho, New York), Western Sahara (2)

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

• Uhaku of Lithuania (1), Sweden (3)

• Whiterockian of Canada (2: Newfoundland and Labrador)

• Volkhov of Estonia (1)

• Arenig of China (20), Norway (2)

• Dawan of China (2)

• Ningkuo of China (10)

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

• Ordovician of Argentina (9), Australia (2), Canada (17: Northwest Territories, Nunavut, Québec, Yukon), China (61), the Czech Republic (6), Estonia (2), 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: 339 collections including 426 occurrences