• Silurian of Malaysia (2 collections)

• Whiterockian of United States (1: Nevada)

• Arenigian of United States (1: Alaska)

• Arenig of Argentina (2), China (3)

• Ordovician of Argentina (5), Australia (4), Canada (3: Quebec, Québec), China (17), Estonia (17), Malaysia (2), Norway (4), the Russian Federation (1), Sweden (3), United States (20: Minnesota, New Mexico, New York, Oklahoma, Virginia, Wyoming)

• Tremadoc of Argentina (4), Canada (9: British Columbia), China (4), Kazakhstan (1), Mexico (11), Norway (1), the Russian Federation (14), South Korea (3), Sweden (1), United States (4: Nevada, Virginia)

• Skullrockian of United States (1: Texas)

• Cambrian to Ordovician of Canada (1: Quebec), the Russian Federation (1)

• Cambrian of Australia (2), Canada (26: Alberta, British Columbia, Newfoundland and Labrador, Nunavut, Nunuvat), China (33), New Zealand (1), Norway (4), the Russian Federation (2), South Korea (5), Sweden (1), the United Kingdom (1), United States (17: New Mexico, New York, Vermont, Virginia)

Total: 232 collections including 464 occurrences