Title: Silicified Late Ordovician trilobites from the Mackenzie Mountains, Northwest Territories, Canada
Subjects: Paleontology, Paléontologie, Stratigraphic Geology, Stratigraphie, Trilobites
Places: Mackenzie Mountains (N.W.T. and Yukon), Mackenzie, Monts (T.N.-O. et Yukon)
Time periods: Ordovician, Ordovicien