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)
• Unit 5
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, gray, green shale and lithified, nodular, gray lime mudstone
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 188769: authorized by Melanie Hopkins, entered by Melanie Hopkins on 18.09.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Chlorophyceae | |
Anthozoa | |
"Halysites agglomeratiformis" = Catenipora agglomeratiformis, "Halysites cf. delicatulus" = Catenipora delicatulus
"Halysites agglomeratiformis" = Catenipora agglomeratiformis Hall 1900 tabulate coral
"Halysites cf. delicatulus" = Catenipora delicatulus Wilson 1926 tabulate coral | |
Calapoecia arctica tabulate coral
Calapoecia anticostiensis Billings 1865 tabulate coral
"Calapoecia canadensis" = Calapoecia coxi Bassler 1950 tabulate coral | |
Lyopora "sp. A aff. franklini" Nicholson and Etheridge 1878 tabulate coral | |
Palaeophyllum sp. Billings 1858 horn coral | |
? Streptelasma arcticum Wilson 1931 horn coral | |
Pterobranchia | |
Glyptograptus "sp. A" graptolite | |
Gastropoda | |
Trochonema coxi Wilson 1938 snail | |
Loxonema sp. Phillips 1841 snail | |
Hormotoma sp. snail | |
"Maclurites septentrionalis" = Maclurites borealis
"Maclurites septentrionalis" = Maclurites borealis Wilson 1938 snail | |
Cephalopoda | |
? Whitfieldoceras sp. Foerste 1932 | |
"Charactocerina thorsteinssoni" = Charactoceras
"Charactocerina thorsteinssoni" = Charactoceras | |
Strophomenata | |
Strophomena sp. Rafinesque and De Blainville 1824 | |
Oepikina sp., "Rafinesquina lata" = Oepikina lata
Oepikina sp. Salmon 1942
"Rafinesquina lata" = Oepikina lata Whiteaves 1896 | |
Rhynchonellata | |
Dinorthis sp. Hall and Clarke 1892 | |
Glyptorthis insculpta Hall 1847 | |
"Rhynchotrema cf. capax" = Hiscobeccus capax
"Rhynchotrema cf. capax" = Hiscobeccus capax Conrad 1842 | |
Trilobita | |
"? Homotelus sp." = Isotelus
"? Homotelus sp." = Isotelus Dekay 1824 trilobite | |
"Illaenus americanus" = Thaleops laurentiana, Bumastus "sp. A", Bumastus "sp. B", Illaenus groenlandicus, Illaenus sp.
"Illaenus americanus" = Thaleops laurentiana Amati and Westrop 2004 trilobite
Bumastus "sp. A" Murchison 1839 trilobite
Bumastus "sp. B" Murchison 1839 trilobite
Illaenus groenlandicus trilobite
Illaenus sp. Dalman 1827 trilobite | |
Ostracoda | |
Leperditia sp. Rouault 1851 ostracod |