District of Mackenzie, Nahoni Range Section, Unit 1 Road River Formation: Ludlow, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Pterobranchia - Graptoloidea - Monograptidae
Monograptus spp.
Monograptus cf. dubius
Monograptus bohemicus (Barrande 1850)
recombined as Bohemograptus bohemicus
see common names

Geography
Country:Canada State/province:Northwest Territories County:District of Mackenzie
Coordinates: 65.5° North, 139.2° West (view map)
Paleocoordinates:10.4° North, 47.3° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Silurian Epoch:Ludlow
10 m.y. bin:Silurian 2
*Period:Late/Upper Silurian *Epoch:Early/Lower Ludlow
Key time interval:Ludlow
Age range of interval:427.40000 - 423.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Road River
Stratigraphic resolution:formation
Stratigraphy comments: Collection taken from 36 feet above base.
Lithology and environment
Primary lithology:black "shale"
Includes fossils?Y
Lithology description: "Shale, non-limy, black, weathers black, lower beds recessive."
Environment:deep subtidal indet.
Taphonomy
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:species names
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: Monograptus nilssoni fauna.
Metadata
Database number:25530
Authorizer:S. Holland Enterer:T. Hanson
Modifier:S. Holland Research group:marine invertebrate
Created:2002-09-15 14:32:26 Last modified:2003-07-08 09:41:16
Access level:the public Released:2002-09-15 14:32:26
Creative Commons license:CC BY
Reference information

Primary reference:
7121. B. S. Norford. 1963. Reconnaissance of the Ordovician and Silurian rocks of Northern Yukon Territory. Geological Survey of Canada Department of Mines and Technical Surveys, Paper 63(39):1-139 [S. Holland/T. Hanson/P. Wagner]