Where: Northwest Territories, Canada (75.0° N, 95.9° W: paleocoordinates 5.6° N, 39.5° 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)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, gray, green lime mudstone and poorly lithified shale
Size class: macrofossils
Collected by R. Thorsteinsson in 1950-53; reposited in the GSC
Collection methods: surface (in situ), mechanical,
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 188770: authorized by Melanie Hopkins, entered by Melanie Hopkins on 18.09.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
? Liospira sp. Ulrich and Scofield 1897 snail | |
Stenolaemata | |
Batostoma sp. Ulrich 1882 | |
Chasmatopora "sp. A" Eichwald 1860
Chasmatopora "sp. B" Eichwald 1860 | |
Strophomenata | |
Oepikina sp. Salmon 1942 | |
"Strophomena fluctuosa" = Nasutimena fluctuosa
"Strophomena fluctuosa" = Nasutimena fluctuosa Billings 1860 | |
Sowerbyella sp. Jones 1928 | |
Rhynchonellata | |
Rhynchotrema sp., "Rhynchotrema cf. capax" = Hiscobeccus capax
Rhynchotrema sp. Hall 1860
"Rhynchotrema cf. capax" = Hiscobeccus capax Conrad 1842 | |
Glyptorthis insculpta Hall 1847 | |
Dinorthis sp. Hall and Clarke 1892 | |
? Resserella sp. Bancroft 1928 | |
Deuteropoda | |
"Ostracoda" indet. Latreille 1802 ostracod | |
Ostracoda | |
Basslerites sp. ostracod | |
Trilobita | |
Bumastus "sp. C" Murchison 1839 trilobite | |
Ceraurinus daedalus Cox 1933 trilobite
Ceraurus horridus trilobite
Ceraurus sp. Green 1832 trilobite | |
Anthozoa | |
Streptelasma "sp. B cf. breve" Hall 1847 horn coral | |
Halysites sp. von Waldheim 1813 tabulate coral | |
Nyctopora "sp. A" Nicholson 1879 tabulate coral | |
"Calapoecia canadensis" = Calapoecia coxi
"Calapoecia canadensis" = Calapoecia coxi Bassler 1950 tabulate coral |