• Whiterockian of United States (4: Nevada, Utah collections)

• Chazyan of United States (4: Alabama, Tennessee)

• Vaana of Estonia (1)

• Langevoja of Estonia (1)

• Billingen of Estonia (1), Kazakhstan (3), the Russian Federation (10)

• Arenig of Argentina (8), Canada (1: New Brunswick), China (27), Greenland (1), the United Kingdom (1), United States (1: Nevada)

• Arenigian of Argentina (4), United States (1: Nevada)

• Dawan of China (6)

• Canadian of Canada (4: Northwest Territories), United States (1: Maryland)

• Ordovician of Argentina (6), Australia (13), Canada (12: Alberta, Newfoundland, Newfoundland and Labrador, Quebec), China (36), Czechia (4), Estonia (7), Iran (12), Ireland (1), Kazakhstan (16), Norway (3), the Russian Federation (80), Sweden (5), the United Kingdom (2), United States (29: Alabama, Arkansas, Idaho, Maine, Missouri, Nevada, Oklahoma, Tennessee, Utah)

• Ibexian of United States (2: Nevada)

Total: 307 collections including 389 occurrences