• Silurian of Algeria (1 collection), Austria (1), the Czech Republic (5), Italy (2), Morocco (2), the United Kingdom (4), United States (1: Arkansas)

• Dobrotivian of the Czech Republic (1)

• Uhaku of the Russian Federation (1), Sweden (3)

• Whiterockian of Canada (16: Newfoundland and Labrador), Norway (3), United States (21: Nevada, New York, Oklahoma, Vermont)

• Chazyan of Canada (10: Newfoundland and Labrador, Northwest Territories, Quebec), United States (12: New York, Tennessee)

• Fennian of France (1)

• Volkhov of Latvia (1), the Russian Federation (29), Sweden (4)

• Hunderum of Sweden (2)

• Langevoja of Sweden (7)

• Valaste of Sweden (3)

• Arenig of Argentina (8), Australia (7), Bolivia (2), Canada (3: Newfoundland and Labrador), China (9), France (2), Morocco (1), Norway (4), Sweden (5), the United Kingdom (5), United States (3: Nevada)

• Arenigian of Argentina (1), Canada (1: Northwest Territories), China (9)

• Klabava of France (1)

• Ordovician to Silurian of Canada (1: Québec)

• Ordovician of Argentina (19), Australia (19), Canada (24: British Columbia, Newfoundland and Labrador, Northwest Territories, Northwest Terrorities, Quebec, Yukon), China (109), the Czech Republic (4), Estonia (1), France (2), Iran (1), Ireland (18), Italy (1), Kazakhstan (3), Kyrgyzstan (2), Morocco (13), the Netherlands (1), Norway (55), Poland (2), the Russian Federation (29), Sweden (63), Turkey (1), the United Kingdom (64), United States (50: British Columbia, California, Idaho, Maine, Nevada, Oklahoma, Tennessee, Virginia), Vietnam (1)

• Tremadoc of Canada (1: Alberta), Colombia (1), Iran (3)

• Ibexian of Norway (1), United States (2: California)

Total: 682 collections including 919 occurrences