Locality 40, unit 16 (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 11 feet thick

• group of beds-level stratigraphic resolution

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

• Limestone; brownish grey to light olive-grey, weathering to yellowish grey, very thin-bedded, flaggy, hard, dense, finely crystalline; 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 188832: authorized by Melanie Hopkins, entered by Melanie Hopkins on 19.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Atrypida - Lissatrypidae
Atrypella cf. borealis Kirk and Amsden 1952
 Actinocerida - Armenoceratidae
 Cyathaspidiformes - Cyathaspididae
Cyathaspididae indet. Flower and Wayland-Smith 1952
 Favositida - Pachyporidae
Striatopora flexuosa Hall 1852 tabulate coral