Silicified Upper Ordovician--Lower Silurian ostracodes from the Avalanche Lake area, southwestern District of Mackenzie (Bulletin / Geological Survey of Canada)
ISBN:9780660132808...
Silicified Upper Ordovician Lower Silurian ostracodes from the Avalanche Lake area southwestern District of Mackenzie Bulletin Geological Survey of Canada
The Great Ordovician Biodiversification Event
ISBN:9780231126786Two of the greatest evolutionary events in the history of life on Earth occurred during Early Paleo...
The Great Ordovician Biodiversification Event
Late Ordovician & Silurian Carbonate-Platform Margin Near Bovine & Lion Mountains, Northeastern Utah
ISBN:9780893261238...
Late Ordovician Silurian Carbonate Platform Margin Near Bovine Lion Mountains Northeastern Utah
The Late Ordovician and Silurian of the Eastern Great Basin
ISBN:9780893260804...
The Late Ordovician and Silurian of the Eastern Great Basin