Where: Northwest Territories, Canada (75.5° N, 96.1° W: paleocoordinates 4.3° N, 37.6° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Aphelognathus grandis conodont zone, Irene Bay Formation (Cornwallis Group), Richmondian (449.6 - 445.5 Ma)
• from upper 50 feet of formation
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified lime mudstone
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 188773: authorized by Melanie Hopkins, entered by Melanie Hopkins on 18.09.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Chlorophyceae | |
Receptaculites sp. Defrance 1827 | |
Cephalopoda | |
Metaspyroceras sp. Foerste 1932 | |
? Spyroceras sp. Hyatt 1884 | |
Gastropoda | |
Maclurites sp. Le Sueur 1818 snail | |
Strophomenata | |
? Strophomena sp. Rafinesque and De Blainville 1824 | |
Stenolaemata | |
Batostoma aff. winchelli Ulrich 1893 |