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Early Paleozoic Ostracoda from Southwestern District of Mackenzie and Yukon Territory
註釋"Early Paleozoic strata of the Cordilleran clastic and carbonate belts are widely distributed throughout northwestern North America. They contain varied, silicified late Ordovician, Late Silurian and Early Devonian ostracode faunas that may serve as a basis for correlation in southwestern District of Mackenzie, central Yukon Territory and eastern Alaska." --