Anticosti Island, Salmon River (8-Mile Pool), Ellis Bay Formation Member 7: Hirnantian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Stromatoporoidea - Labechiida - Aulaceratidae
Stromatoporoidea - Clathrodictyida - Clathrodictyidae
Clathrodictyon sp. Nicholson and Murie 1878
Trilobita - Odontopleurida - Odontopleuridae
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
unclassified
see common names

Geography
Country:Canada State/province:Québec
Coordinates: 49.4° North, 62.3° West (view map)
Paleocoordinates:20.2° South, 90.2° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Ordovician Epoch: Late Ordovician
Stage: Hirnantian 10 m.y. bin: Ordovician 5
*Period:Late/Upper Ordovician *Epoch:Ashgillian
*Local age/stage:Richmondian
Key time interval: Hirnantian Graptolite zone:  Normalograptus persculptus
Age range of interval: 445.2 - 443.1 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Jolliet Formation:Ellis Bay Member:Laframboise
Stratigraphic resolution:member
Stratigraphy comments: Petryk's Member 7. Long & Copper (1989) put this in Laframboise.
Lithology and environment
Primary lithology:brown wackestone
Secondary lithology: calcareous sandstone
Includes fossils?Y
Includes fossils?Y
Lithology description: "Light brown, arenaceous wackestone with scattered corals and a sharp, even base. The upper part is progressively more arenaceous to become a medium to coarse calcareous sandstone."
Environment:marine indet.
Geology comments: Environmental call by T. Hanson.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: Collection also includes colonies of cateniporids, heliolitids, and favositids.
Metadata
Database number:24444
Authorizer:S. Holland Enterer:T. Hanson
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-08-07 15:53:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2002-08-07 15:53:47
Creative Commons license:CC0
Reference information

Primary reference:
6866. C. R. Barnes, A. A. Petryk, and T. E. Bolton. 1981. Anticosti Island, Québec. In P. J. Lespérance (ed.), Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group Guidebook 1:1-24 [S. Holland/T. Hanson/S. Bruning]