Locality 3, unit 3 (Silurian to of Canada)

Where: Northwest Territories, Canada (74.7° N, 94.9° W: paleocoordinates 3.1° N, 33.5° 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 2.0 feet thick

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray limestone

• Limestone; medium light-grey, weathering to mottled greys, very thin-bedded, hard, dense, finely crystalline

Size class: macrofossils

Collected by R. Thorsteinsson in 1950-53

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 188855: authorized by Melanie Hopkins, entered by Melanie Hopkins on 19.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Aulacopleurida - Solenopleuridae
Solenopleura sp. Angelin 1854 trilobite
 Phacopida - Encrinuridae
Encrinurus "sp. A" Emmrich 1844 trilobite
Strophomenata
 Orthotetida - Schuchertellidae
Schuchertella cf. interstriata
subspecies sinuata
Rhynchonellata
 Athyridida - Meristidae
Merista sp. Suess 1851
 Athyridida - Nucleospiridae
Nucleospira cf. hecetensis Kirk and Amsden 1952
 Spiriferida - Delthyrididae
Howellella "sp. A" Kozlowski 1946
 Atrypida - Lissatrypidae
"Atrypella cf. shrocki" = Atrypoidea, Atrypella tenuis, Atrypella scheii
"Atrypella cf. shrocki" = Atrypoidea
Atrypella tenuis Kirk and Amsden 1952
Atrypella scheii Holtedahl 1914
 Rhynchonellida - Camarotoechiidae
Camarotoechia "sp. A" Hall and Clarke 1893
Camarotoechia "sp. B" Hall and Clarke 1893
Gastropoda
 Murchisoniina - Hormotomidae
Coelocaulus "sp. B" Oehlert and Oehlert 1888 snail
Coelocaulus "sp. C" Oehlert and Oehlert 1888 snail
Anthozoa
 Stauriida - Streptelasmatidae
Streptelasma "sp. A" Hall 1847 horn coral