Locality 40, unit 47 (Silurian to of Canada)

Where: Northwest Territories, Canada (74.8° N, 93.5° W: paleocoordinates 3.0° N, 33.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: A Member (Read Bay Formation), Wenlock to Wenlock (433.4 - 423.0 Ma)

• unit is 83.6 feet thick

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, argillaceous limestone and poorly lithified shale

• Argillaceous limestone; light to medium light-grey, weathering similar, very thin-bedded, flaggy, hard, dense, very finely crystalline; very thin light grey shale partings

Size class: macrofossils

Collected by R. Thorsteinsson in 1950-53; reposited in the GSC

Collection methods: surface (in situ),

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 188807: authorized by Melanie Hopkins, entered by Melanie Hopkins on 19.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Orthotetida - Triplesiidae
 Athyridida - Meristellidae
 Spiriferida - Delthyrididae
Howellella "sp. A" Kozlowski 1946
 Atrypida - Lissatrypidae
"Atrypella sp." = Atrypoidea, Atrypella scheii
"Atrypella sp." = Atrypoidea Mitchell and Dun 1920
Atrypella scheii Holtedahl 1914
 Rhynchonellida - Camarotoechiidae
Camarotoechia "sp. A" Hall and Clarke 1893
 Auloporida - Syringoporidae
Syringopora dalmani tabulate coral
 Favositida - Favositidae
Favosites cf. forbesi tabulate coral
 Favositida - Pachyporidae
Striatopora flexuosa Hall 1852 tabulate coral
 Stauriida - Streptelasmatidae
Streptelasma sp. Hall 1847 horn coral
 Stauriida - Arachnophyllidae
Chonophyllum "sp. A" Milne-Edwards and Haime 1850 horn coral
 Stauriida - Zaphrentidae
"? Zaphrentis sp." = Zaphrenthis
"? Zaphrentis sp." = Zaphrenthis Rafinesque and Clifford 1820 horn coral