A trilobite zonation of Middle Ordovician rocks, southwestern district of Mackenzie
By: Rolf Ludvigsen.
Series: Bulletin / Geological Survey ;; 312; Bulletin (Geological Survey of Canada) ;; 312.
Publisher: Energy, Mines and Resources Canada
Published: 1979
Place of publication: Ottawa, Canada
Language: eng
Number of pages: 98
Subjects: Geology, Stratigraphic -- Ordovician.; Trilobites -- Northwest Territories -- Mackenzie.; Paleontology -- Ordovician.; Geology -- Northwest Territories -- Mackenzie.
Notes: Bibliography: p. 48-52.