| Title | Tortodus dodoensis, a new conodont species, and a Givetian (Middle Devonian) conodont fauna from the northern Mackenzie Mountains, northwest Canada |
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| Author | Gouwy, S A ;
Uyeno, T T; McCracken, A D |
| Source | Paläontologische Zeitschrift 2019 p. 1-16, https://doi.org/10.1007/s12542-019-00462-1 |
| Image |  |
| Year | 2019 |
| Alt Series | Natural Resources Canada, Contribution Series 20180120 |
| Publisher | Springer Science and Business Media LLC |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf (Adobe® Reader®); html |
| Province | Northwest Territories |
| NTS | 96C; 96D; 96E; 96F |
| Area | Mackenzie Mountains; Dodo Canyon |
| Lat/Long WENS | -128.0000 -125.0000 65.5000 64.5000 |
| Subjects | paleontology; stratigraphy; Middle Devonian; Givetian; biostratigraphy; micropaleontology; systematic paleontology; taxonomy; fossil descriptions; microfossils; conodonts; faunas; fossil distribution;
fossil distribution, strata; fossil zones; fossil assemblages; paleogeography; lithostratigraphy; bedrock geology; lithology; sedimentary rocks; limestones; black shales; Tortodus dodoensis; Polygnathus amphora; Polygnathus denisbriceae; Polygnathus
xylus ensensis; Polygnathus pseudoeiflius; Polygnathus linguiformis klapperi s.l.; Polygnathus l. weddigei; Polygnathus parawebbi; Polygnathus pseudofoliatus; Horn River Group; Hare Indian Formation; Bluefish Member; Phanerozoic; Paleozoic;
Devonian |
| Illustrations | location maps; geoscientific sketch maps; biostratigraphic charts; photographs; stratigraphic columns; photomicrographs |
| Program | GEM2: Geo-mapping for Energy and Minerals Mackenzie Corridor, Shield to Selwyn |
| Program | IGCP Project 652 - Reading Geologic Time in Paleozoic Sedimentary Rocks |
| Released | 2019 07 08 |
| Abstract | A new conodont species Tortodus dodoensis sp. nov. from the lower part of the Givetian (Middle Devonian) of the Mackenzie Mountains (NW Canada) is described. This paper also reports the lowest
stratigraphic occurrence of a Givetian fauna containing a.o. Polygnathus amphora, P. denisbriceae, P. xylus ensensis, P. pseudoeiflius, P. linguiformis klapperi s.l., P. l. weddigei, P. parawebbi and P. pseudofoliatus from the northern Mackenzie
Mountains. This fauna situates the sample in the timorensis to ansatus zones interval, possibly restricting it to the timorensis Zone. This result allows the positioning of the Eifelian-Givetian contact within the lowest 7.5 m of the Hare Indian
Formation (Horn River Group) (northern Mackenzie Mountains, NW Territories). |
| Summary | (Plain Language Summary, not published)
This paper describes a new species of conodonts, an extinct microvertebrate that is used in detailed correlation, subdivision and dating of stratigraphic
layers in geological research. The research in this paper identified the oldest Givetian (late Middle Devonian) fauna in the northern Mackenzie Mountains (NWT) and allows the positioning of the base of the Givetian Stage in this area. |
| GEOSCAN ID | 308374 |
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