Locality 39, unit 11, 72 feet above base (Silurian of Canada)

Where: Northwest Territories, Canada (74.8° N, 93.4° W: paleocoordinates 2.0° N, 31.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: C Member (Read Bay Formation), Ludlow (427.4 - 423.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray lime mudstone

• Limestone; light grey to medium grey, weathering greyish yellow and yellowish grey, thin- to thick-bedded, hard, dense, sublithographic to medium 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: biostratigraphic analysis

PaleoDB collection 188872: authorized by Melanie Hopkins, entered by Melanie Hopkins on 19.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Pentamerida - Subrianidae
 Atrypida - Atrypidae
Atrypa sp. Dalman 1828
 Atrypida - Lissatrypidae
Atrypella cf. scheii Holtedahl 1914
Anthozoa
 Favositida - Pachyporidae
Striatopora sp. Hall 1851 tabulate coral
 Stauriida - Amplexidae
Amplexus sp. Sowerby 1814 horn coral
 Stauriida - Ptychophyllidae
? Ptychophyllum sp. Milne-Edwards and Haime 1850 horn coral