Locality 40, unit 44 (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 90 feet thick

• group of beds-level stratigraphic resolution

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

• Argillaceous limestone; medium light-grey, weathering to medium light grey and greyish yellow, very thin-bedded, flaggy, hard, dense, very finely to medium crystalline; 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 188810: authorized by Melanie Hopkins, entered by Melanie Hopkins on 19.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Orthotetida - Schuchertellidae
 Strophomenida - Strophonellidae
Strophonella sp. Hall 1879
 Athyridida - Nucleospiridae
Nucleospira cf. hecetensis Kirk and Amsden 1952
 Spiriferida - Delthyrididae
Howellella "sp. A" Kozlowski 1946
 Atrypida - Lissatrypidae
"Atrypella cf. shrocki" = Atrypoidea
Atrypella borealis Kirk and Amsden 1952
Atrypella cf. scheii Holtedahl 1914
Cephalopoda indet. Cuvier 1797
 Favositida - Favositidae
Favosites cf. forbesi tabulate coral
 Stauriida - Streptelasmatidae
Streptelasma "sp. A" Hall 1847 horn coral