Locality 40, unit 50 (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 1.5 feet thick

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, massive, gray reef rocks

• Limestone; biostromal, light grey to medium light-grey, weathering to greyish yellow and greyish pink, massive, in part porous, coarsely crystalline

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 188806: authorized by Melanie Hopkins, entered by Melanie Hopkins on 19.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Atrypida - Lissatrypidae
Atrypella cf. scheii Holtedahl 1914
 Auloporida - Syringoporidae
Syringopora dalmani tabulate coral
 Favositida - Favositidae
 Favositida - Alveolitidae
Alveolites "sp. A" Lamarck 1801 tabulate coral
 Stauriida - Arachnophyllidae
Chonophyllum "sp. A." Milne-Edwards and Haime 1850 horn coral