Devonian conodont biostratigraphy of the Mackenzie Mountains, western part of the Northwest Territories

In this paper, a review of the current understanding of Devonian conodont biostratigraphy in the Mackenzie Mountains in the Northwest Territories is presented. The Devonian stratigraphy of the northern and southern Mackenzie Mountains is presented on two chronostratigraphic charts, from the first deposits on top of the sub-Devonian unconformity to the lower part of the Imperial and Fort Simpson formations. Schematic maps give an overview of the regional distribution of the formations in the Mackenzie Mountains. This update revealed that several of the assemblage and formation contacts are younger than presumed in an earlier time-stratigraphic chart; several formations and members are now better constrained in the updated charts. The update also pointed out intervals in the charts for which no data were available and for which more research is needed to constrain formations in the Devonian conodont biozonation.