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

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

• Vaana of Estonia (1)

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

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

• Arenig of Argentina (8), Canada (1: New Brunswick), China (27), Greenland (1), the United Kingdom (1), 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 (78), 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: 304 collections including 386 occurrences