• Silurian of Canada (2: Québec collections), Malaysia (1)

• Aluoja of Sweden (8)

• Whiterockian of Canada (5: British Columbia, Northwest Territories), United States (3: Nevada)

• Fennian of Canada (1: New Brunswick)

• Volkhov of Estonia (11), the Russian Federation (11), Sweden (7)

• Dawan of China (1)

• Arenigian of United States (1: Alaska)

• Arenig of Argentina (2), Australia (1), China (11), the Russian Federation (1)

• Ordovician to Silurian of Canada (20: Nunavut, Québec)

• Ordovician of Argentina (26), Australia (6), Austria (1), Canada (147: British Columbia, Cape Manning, Cornwallis Island, Manitoba, Newfoundland, Newfoundland and Labrador, Northwest Territories, Nunavut, Ontario, Quebec, Québec), China (54), Estonia (16), Germany (1), Greenland (9), Iran (2), Ireland (1), Kazakhstan (1), Lithuania (1), Malaysia (5), New Zealand (3), Norway (2), Peru (1), Poland (7), the Russian Federation (26), Sweden (17), the United Kingdom (1), United States (90: Alaska, Iowa, Minnesota, Missouri, Nevada, New Mexico, New York, Ohio, Oklahoma, Wyoming)

• Tremadoc of Argentina (1), Canada (9: British Columbia), China (8), Iran (3), Kazakhstan (2), South Korea (3), Sweden (3), United States (1: Virginia)

• Ibexian of United States (2: Nevada, New York)

• Cambrian of Canada (4: Alberta, Nunuvat), China (2), Norway (1)

Total: 542 collections including 651 occurrences

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