District of Mackenzie, Sunblood Range (Z-211): Whiterockian, Canada
collected by Rolf Ludvigsen 1971-1973
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita
- Asaphida
- Asaphidae
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Isotelus cf. harrisi
Raymond 1905
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Trilobita
- Lichida
- Lichidae
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Amphilichas sp.
Raymond 1905
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Trilobita
- Proetida
- Bathyuridae
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Bathyurus granulosus
Ludvigsen 1979
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Trilobita
- Phacopida
- Cheiruridae
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Ceraurinella nahanniensis
Chatterton and Ludvigsen 1976
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see common names |
Geography
Country: | Canada | State/province: | Northwest Territories | County: | District of Mackenzie |
Coordinates: | 61.5° North, 125.7° West (view map) | ||||
Paleocoordinates: | 5.4° North, 60.0° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | outcrop |
Time
Period: | Ordovician | ||
10 m.y. bin: | Ordovician 2-4 | ||
*Period: | Middle Ordovician - Late/Upper Ordovician | *Epoch: | Caradocian | *Local age/stage: | Kirkfieldian - Shermanian |
Key time interval: | Whiterockian | Trilobite zone: | Bathyurus granulosus |
Age range of interval: | 470.00000 - 457.00000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Sunblood | ||
Local section: | Sunblood Range Section Z | Local bed: | 211 ft |
Local order: | bottom to top | ||
Stratigraphic resolution: | bed |
Lithology and environment
Primary lithology: | "limestone" |
Includes fossils? | Y |
Environment: | shallow subtidal indet. |
Taphonomy
Modes of preservation: | replaced with silica |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Collection excludes: | some macrofossils | ||
Collection methods: | chemical,survey of museum collection | ||
Reason for describing collection: | biostratigraphic analysis | ||
Museum repositories: | GSC | ||
Collectors: | Rolf Ludvigsen | Collection dates: | 1971-1973 |
Metadata
Database number: | 25173 | ||
Authorizer: | S. Holland, M. Hopkins | Enterer: | T. Hanson, M. Hopkins |
Modifier: | M. Hopkins | ||
Created: | 2002-08-31 11:57:10 | Last modified: | 2011-02-08 11:20:50 |
Access level: | the public | Released: | 2002-08-31 11:57:10 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
34691. | J. V. Tremblay and S. R. Westrop. 1991. Middle Ordovician (Whiterockian) trilobites from the Sunblood Formation, District of Mackenzie, Canada. Journal of Paleontology 65(5):801-824 [M. Hopkins/M. Hopkins] |