• Devonian of Canada (1: New Brunswick collection), United States (3: Indiana, Kentucky)

• Jaani of Estonia (5)

• Niagaran of United States (2: Indiana, Ohio)

• Silurian of Afghanistan (1), Australia (3), Belarus (2), Canada (88: British Columbia, Manitoba, New Brunswick, Northwest Territories, Northwest Territories and Yukon, Nunavut, Ontario, Quebec, Québec), China (26), Czechia (8), Estonia (33), India (4), Ireland (1), Kazakhstan (1), Mongolia (11), Norway (8), the Russian Federation (46), Svalbard and Jan Mayen (1), Sweden (49), Türkiye (1), Ukraine (6), the United Kingdom (6), United States (92: Alaska, California, Illinois, Indiana, Iowa, Kentucky, Michigan, Nebraska, Nevada, New York, Ohio, Oklahoma, Pennsylvania, Wisconsin), Uzbekistan (1), Venezuela (1)

• Ordovician to Silurian of Canada (4: British Columbia, Northwest Territories, Québec), United States (1: Alaska)

• Ordovician of Australia (7), Belarus (1), Canada (83: Manitoba, Northwest Territories, Nunavut, Quebec, Québec), China (25), Estonia (43), Kazakhstan (2), Latvia (5), Lithuania (3), Malaysia (1), Mongolia (5), Norway (2), the Russian Federation (31), the United Kingdom (2), United States (26: Alaska, California, Colorado, Michigan, Missouri, Nevada, New Mexico, Texas, Wyoming)

• Ibexian of United States (1: Nevada)

Total: 642 collections including 878 occurrences