GSC 95286, Aberdeen Lake, Keewatin (Ordovician of Canada)

Where: Nunavut, Canada (64.9° N, 98.7° W: paleocoordinates 0.8° S, 47.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Conodont Fauna 12 conodont zone, Aberdeen Lake Formation, Richmondian (449.5 - 443.7 Ma)

• "U. Ord. (prob. Richmondian). Aberdeen Lake Fm. Outlier"

• formation-level stratigraphic resolution

Environment/lithology: marine; gray limestone

• "grey, buff-to-grey weathering, finely crystalline, soft, friable, ls. undul and irreg. bedding."

Size classes: macrofossils, mesofossils

Collected by M.R. Michaud in 1977; reposited in the GSC

Primary reference: T. E. Bolton and G. S. Nowlan. 1979. A Late Ordovician fossil assemblage from an outlier north of Aberdeen Lake, District of Keewatin. Geological Survey of Canada Bulletin 321:1-26 [P. Wagner/P. Wagner/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 169387: authorized by Pete Wagner, entered by Pete Wagner on 22.05.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Chlorophyceae
 Dasycladales - Dasycladaceae
Cyclocrinites sp. Stolley 1898
Stromatoporoidea
 Labechiida - Rosenellidae
Cystostroma sp. Galloway and St Jean 1957 stromatoporoid sponge
Anthozoa
 Stauriida - Stauriidae
 Stauriida - Streptelasmatidae
Bighornia bottei horn coral
Lobocorallium sp. Nelson 1963 horn coral
 Auloporida - Tetraporellidae
 Heliolitida - Halysitidae
Catenipora sp. Lamarck 1816 tabulate coral
Tollina aff. feildeni tabulate coral
 Lichenariida - Lyoporidae
 Favositida - Favositidae
Paleofavosites sp. Twenhofel 1914 tabulate coral
Cephalopoda
 Endocerida - Endoceratidae
Cyclendoceras sp. Grabau and Shimer 1910
 Actinocerida - Armenoceratidae
Armenoceras michaudae n. sp. Bolton and Nowlan 1979
 Oncocerida - Diestoceratidae
Diestoceras sp. Foerste 1924
Gastropoda
 Murchisoniina - Trochonematidae
Trochonema cf. coxi Wilson 1938 snail
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquinidae indet. Schuchert 1893
Rhynchonellata
 Orthida - Plaesiomyidae
? Dinorthis sp. Hall and Clarke 1892
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
unclassified
  -
Conodonta
 Panderodontida - Panderodontidae
Panderodus "n. sp. C" Ethington 1959 conodont
Panderodus panderi Stauffer 1940 conodont
Panderodus gracilis Branson and Mehl 1933 conodont
Panderodus feulneri Glenister 1957 conodont
Belodina compressa Branson and Mehl 1933 conodont
Plegagnathus dartoni Stone and Furnish 1959 conodont
 Belodellida - Belodellidae
Walliserodus cf. curvatus Branson and Branson 1947 conodont
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus suberectus Branson and Mehl 1933 conodont