• Silurian of Canada (1: Northwest Territories collection), China (1), Estonia (1), Norway (4), the United Kingdom (6)

• Chazyan of United States (1: Virginia)

• Whiterockian of United States (1: Nevada)

• Ordovician of Australia (21), Belgium (5), Canada (28: Northwest Territories, Nunavut, Ontario, Quebec), China (7), the Czech Republic (3), Estonia (2), Italy (2), Kazakhstan (1), Myanmar (1), Norway (2), the Russian Federation (1), Sweden (2), the United Kingdom (24), United States (52: Alaska, Georgia, Illinois, Iowa, Kentucky, Maine, Minnesota, Missouri, New York, Oklahoma, Pennsylvania, Tennessee, Virginia, Wisconsin, Wyoming)

Total: 166 collections including 182 occurrences