Locality 40, unit 51, lot 6: Wenlock - Ludlow, Canada
collected by R. Thorsteinsson 1950-

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Spiriferida - Delthyrididae
Rhynchonellata - Rhynchonellida - Camarotoechiidae
Rhynchonellata - Atrypida - Septatrypidae
Rhynchonellata - Athyridida - Meristellidae
? Whitfieldella sp. Hall and Clarke 1893
unclassified
Anthozoa - Stauriida - Arachnophyllidae
see common names

Geography
Country:Canada State/province:Northwest Territories County:Cornwallis Island
Coordinates: 74.8° North, 93.5° West (view map)
Paleocoordinates:4.2° North, 77.9° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Silurian Epoch: Wenlock - Ludlow
10 m.y. bin: Silurian 2
Key time interval: Wenlock - Ludlow
Age range of interval: 432.9 - 422.7 m.y. ago
Stratigraphy
Formation:Read Bay Member:A
Stratigraphic resolution:group of beds
Stratigraphy comments: unit is 228 feet thick; fauna nearer to bottom than top of unit
Lithology and environment
Primary lithology:wavy/flaser/lenticular bedding,gray lithified argillaceous lime mudstone
Secondary lithology:gray poorly lithified "shale"
Includes fossils?Y
Lithology description: Argillaceous limestone; medium light-grey to medium grey, weathering to yellowish grey, very thin-bedded, flaggy, hard, dense, sublithographic to finely crystalline; numerous light grey shale partings; irregular bedding planes.
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:GSC
Collectors:R. Thorsteinsson Collection dates:1950-53
Metadata
Database number:188805
Authorizer:M. Hopkins Enterer:M. Hopkins
Modifier:M. Hopkins Research group:marine invertebrate
Created:2017-09-19 10:41:26 Last modified:2025-02-22 15:12:02
Access level:the public Released:2017-09-19 10:41:26
Creative Commons license:CC0
Reference information

Primary reference:
63386. R. Thorsteinsson. 1958. Cornwallis and Little Cornwallis Islands, District of Franklin, Northwest Territories. Geological Survey of Canada Memoirs 294:1-134 [M. Hopkins/M. Hopkins/M. Hopkins]