• Whiterockian of Canada (1: Newfoundland and Labrador collection), United States (1: Texas)

• Yapeenian of New Zealand (29)

• Arenig of China (9), Morocco (1), Norway (2), United States (1: Nevada)

• Arenigian of Canada (2: Northwest Territories), United States (1: Alaska)

• Ningkuo of China (5)

• Ordovician of Argentina (4), Australia (1), Bolivia (1), Canada (2: Newfoundland and Labrador, Yukon), China (7), New Zealand (12), the Russian Federation (11), United States (14: Alaska, British Columbia, Idaho, New York)

Total: 104 collections including 163 occurrences