Boyce, W.D. 1997: Early to Middle Ordovician trilobite-based biostratigraphic zonation of the Autochthon and Parautochthon, western Newfoundland, Canada. Second International Trilobite Conference, Brock University, St. Catharines, Ontario, August 22-25, 1997, Abstracts with Program, page 10. ...
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