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Poulton, T. P. (1991). Hettangian through Aalenian (Jurassic) guide fossils and biostratigraphy, northern Yukon and adjacent Northwest Territories. Geological Survey of Canada, Bulletin. 410: 1-95, pls. 1-18.
Poulton, T. P. (1991). Hettangian through Aalenian (Jurassic) guide fossils and biostratigraphy, northern Yukon and adjacent Northwest Territories. Geological Survey of Canada, Bulletin. 410: 1-95, pls. 1-18.
