Locality 34, unit 5 (Ordovician of Canada)

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 (449.5 - 443.7 Ma)

• Unit 5

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, green shale and lithified, nodular, gray lime mudstone

• greyish green shale interbedded with minor discontinuous beds and concretions of medium gray, hard, dense sublithographic limestone

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

• Cephalopods identified by Walter C. Sweet and A. K. Miller, bryozoans by T. E. Bolton, corals, brachiopods, and arthropods by A. E. Wilson, graptolites and chordates by R. Thorsteinsson
Show authors, comments, and common names
unclassified
  -
Persicaria sp., Herbertella "sp. A", Herbertella "sp. B"
Trilobita
 Corynexochida - Illaenidae
Bumastus "sp. A", Bumastus "sp. B", Illaenus americanus, Illaenus groenlandicus, Illaenus sp.
Bumastus "sp. A" Murchison 1839 trilobite
Bumastus "sp. B" Murchison 1839 trilobite
Illaenus sp. Dalman 1827 trilobite
 Asaphida - Asaphidae
? Homotelus sp.
? Homotelus sp. Raymond 1920 trilobite
Ostracoda
 Leperditicopida - Leperditiidae
Leperditia sp.
Leperditia sp. Rouault 1851 ostracod
Strophomenata
 Strophomenida - Strophomenidae
Strophomena sp., Oepikina sp., "Rafinesquina lata" = Oepikina lata
Strophomena sp. Rafinesque and De Blainville 1824
Oepikina sp. Salmon 1942
"Rafinesquina lata" = Oepikina lata Whiteaves 1896
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
"Rhynchotrema cf. capax" = Hiscobeccus capax
"Rhynchotrema cf. capax" = Hiscobeccus capax Conrad 1842
 Orthida - Glyptorthidae
Glyptorthis insculpta
 Orthida - Plaesiomyidae
Dinorthis sp.
Dinorthis sp. Hall and Clarke 1892
Gastropoda
 Trochonematoidea - Trochonematidae
Trochonema coxi
Trochonema coxi Wilson 1938 snail
 Euomphalina - Macluritidae
"Maclurites septentrionalis" = Maclurites borealis
"Maclurites septentrionalis" = Maclurites borealis Wilson 1938 snail
 Murchisoniina - Hormotomidae
Hormotoma sp.
 Murchisoniina - Loxonematidae
Loxonema sp.
Loxonema sp. Phillips 1841 snail
Cephalopoda
 Orthocerida - Clinoceratidae
? Whitfieldoceras sp.
? Whitfieldoceras sp. Foerste 1932
 Discosorida - Cyrtogomphoceratidae
Cyrtogomphoceras baffinense
 Barrandeocerida - Apsidoceratidae
"Charactocerina thorsteinssoni" = Charactoceras
"Charactocerina thorsteinssoni" = Charactoceras
Graptolithina
 Bireclinata - Retiolitidae
Glyptograptus "sp. A"
Anthozoa
 Sarcinulida - Syringophyllidae
Calapoecia arctica, Calapoecia anticostiensis, "Calapoecia canadensis" = Calapoecia coxi
Calapoecia arctica tabulate coral
"Calapoecia canadensis" = Calapoecia coxi Bassler 1950 tabulate coral
 Lichenariida - Lyoporidae
Lyopora "sp. A aff. franklini"
Lyopora "sp. A aff. franklini" Nicholson and Etheridge 1878 tabulate coral
 Heliolitida - Halysitidae
Halysites cf. delicatulus, Halysites agglomeratiformis
 Stauriida - Stauriidae
Palaeophyllum sp.
Palaeophyllum sp. Billings 1858 horn coral
 Stauriida - Streptelasmatidae
? Streptelasma arcticum
Chlorophyceae
  - Receptaculitidae
Receptaculites arcticus