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Ordovician
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Pages in category "Ordovician"
The following 4 pages are in this category, out of 4 total.
D
Description of a New Genus of the Order Eurypterida from the Utica Slate
N
A New Ordovician Eurypterid
New Species of Trilobite from the Trenton Limestone at Trenton Falls, N. Y.
Notice of the discovery of a Poecilopod in the Utica slate formation
Category
:
Paleozoic
