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 Paleozoic Era > Ordovician Period
 Directory > Science > Earth Sciences > Geology and Geophysics > Geologic Time > Paleozoic Era > Ordovician Period		  
 
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  • Lake Témiscamingue Fossil Centre: The Earth Before the Dinosaurs Open site in a new window - Focusing on the Ordovician-Silurian period, from 505 to 400 million years ago.
  • Mohawk Valley Fossils Open site in a new window - Examines the sediments that were deposited during the Middle to Late Ordovician Period in the ocean that was then at the present site of the Mohawk River Valley of New York.
  • Ordovician Open site in a new window - Known for the presence of its diverse marine invertebrates, including graptolites, trilobites, brachiopods, and the conodonts (early vertebrates).
 



 
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