• Jaani of Estonia (4 collections)

• Silurian of Canada (25: British Columbia, Manitoba, Northwest Territories, Ontario, Quebec, Québec), China (6), Estonia (24), Mongolia (2), Norway (3), the Russian Federation (20), Svalbard and Jan Mayen (1), Sweden (9), Türkiye (1), United States (21: Alaska, California, Iowa, Kentucky, Ohio, Wisconsin)

• Ordovician to Silurian of Canada (3: British Columbia, Québec), United States (1: Alaska)

• Ordovician of Australia (4), Canada (64: Manitoba, Northwest Territories, Nunavut, Quebec, Québec), China (23), Estonia (43), Kazakhstan (2), Latvia (1), Malaysia (1), Mongolia (2), Norway (1), the Russian Federation (25), United States (24: Alaska, California, Colorado, Michigan, Nevada, New Mexico, Texas, Wyoming)

• Ibexian of United States (1: Nevada)

Total: 311 collections including 380 occurrences