Locality 40, unit 53, 112 feet below top: Wenlock - Ludlow, Canada
collected by R. Thorsteinsson 1950-

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Orthotetida - Schuchertellidae
Schuchertella informal sp. B Girty 1904
Rhynchonellata - Atrypida - Septatrypidae
Atrypella scheii Holtedahl 1914
Rhynchonellata - Rhynchonellida - Camarotoechiidae
Camarotoechia informal sp. C Hall and Clarke 1893
Rhynchonellata - Athyridida - Meristellidae
Meristina informal sp. A Hall 1867
Stenolaemata - Trepostomida - Monticuliporidae
Mesotrypa cf. suprasilurica
Stenolaemata - Cystoporata - Fistuliporidae
Cyclotrypa cf. silurica
Ostracoda
Ostracoda indet. Latreille 1802
see common names

Geography
Country:Canada State/province:Northwest Territories County:Cornwallis Island
Coordinates: 74.8° North, 93.5° West (view map)
Paleocoordinates:3.0° North, 33.2° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Silurian
10 m.y. bin:Silurian 2
Key time interval:Wenlock - Ludlow
Age range of interval:433.40000 - 423.00000 m.y. ago
Stratigraphy
Formation:Read Bay Member:A
Stratigraphic resolution:group of beds
Stratigraphy comments: unit is 103 feet thick; fauna collected 112 feet below top of unit
Lithology and environment
Primary lithology:gray lithified argillaceous lime mudstone
Secondary lithology: poorly lithified "shale"
Includes fossils?Y
Lithology description: Argillaceous limestone; light grey to medium dark-grey, weathering yellowish grey, very thin-bedded, flaggy, hard, dense, sublithographic to finely crystalline; a few beds medium to coarsely crystalline; irregularly bedded; light to medium grey shale partings constitute significant elements
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:188794
Authorizer:M. Hopkins Enterer:M. Hopkins
Modifier:M. Hopkins Research group:marine invertebrate
Created:2017-09-18 17:38:01 Last modified:2017-09-19 10:50:44
Access level:the public Released:2017-09-18 17:38:01
Creative Commons license:CC BY
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]