Richardson Mtns., Road River Fm.: Llandovery, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Pterobranchia - Graptoloidea - Diplograptidae
Orthograptus sp. Lapworth 1873
Pterobranchia - Graptoloidea - Retiolitidae
Glyptograptus sp. Lapworth 1873
Rhynchonellata - Spiriferida - Delthyrididae
originally entered as "? Howellela sp."
Rhynchonellata - Orthida - Dalmanellidae
Dalmanella sp. Hall and Clarke 1892
see common names

Geography
Country:Canada State/province:Yukon
Coordinates: 68.2° North, 137.0° West (view map)
Paleocoordinates:8.8° North, 108.1° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:basin
Time
Period: Silurian Epoch: Llandovery
10 m.y. bin: Silurian 1
*Epoch:Early/Lower Llandovery
Key time interval: Llandovery Zone:  Diplograptus
Age range of interval: 443.8 - 433.4 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Road River
Stratigraphy comments: "lower Lland."
Lithology and environment
Primary lithology: "shale"
Environment:marine indet.
Geology comments: "dark graptolitic shale. basinal. eugeosyncline"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Taxonomic list comments:"D.E. Jackson and A.C. Lenz, 1962. Zonation of Ord and Sil graptolites of northern Yukon, Canada. AAPG Bull. 46:30-4[?]"
Metadata
Database number:515
Authorizer:J. Sepkoski Enterer:M. Sommers
Modifier:J. Ju Research group:marine invertebrate
Created:1999-01-07 13:31:14 Last modified:2025-02-22 15:12:02
Access level:the public Released:1999-01-07 13:31:14
Creative Commons license:CC0
Reference information

Primary reference:
60919. D. E. Jackson and A. C. Lenz. 1962. Zonation of Ordovician and Silurian graptolites of northern Yukon, Canada. AAPG Bulletin 46:30-45 [M. Uhen/J. Ju/M. Uhen]