Bed 36, Section 5 - Mount Goodenough Fm, Aklavik Range (Cretaceous of Canada)

Also known as Field No. 16, Bed 36

Where: Northwest Territories, Canada (67.9° N, 135.4° W: paleocoordinates 70.6° N, 65.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Lower Member (Mount Goodenough Formation), Barremian (129.4 - 125.0 Ma)

• 140-150 ft of shale, 888-952 ft above base of section; from Crioceras cf. remondi biozone; classified as "lower member" of "upper shale-siltstone division" in Jeletzky (1958); reassigned to "Mount Goodenough Formation" following Fowler and Braun (1993). Both Jeletzky (1958) and Fowler and Braun (1993) assign this biozone to a Barremian age.

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, concretionary, black, brown, gray, silty shale and sandy shale

• Boreal faunal province; inner-middle shelf depositional environment; accumulated during interval of regression and progradation
• Shale, dark grey, blackish to brownish tinged; pure to silty, soft and flaky, earthy weathering; interbeds of sandy shale.

Size class: macrofossils

Preservation: concretion

Reposited in the GSC

Collection methods: surface (float),

• Collected by Jeletzky; presumably reposited in GSC collections

Primary reference: J. A. Jeletzky. 1958. Uppermost Jurassic and Cretaceous rocks of Aklavik Range, Northeastern Richardson Mountains, Northwest Territories. Geological Survey of Canada, Paper 58(2):1-84 [A. Miller/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 55838: authorized by Austin Hendy, entered by Austin Hendy on 06.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pholadida - Pleuromyidae
Pleuromya sp. Meek 1873 clam
 Myalinida - Inoceramidae
Inoceramus sp. Sowerby 1814 clam
Cephalopoda
 Belemnitida -
 Ammonitida - Ancyloceratidae
"Crioceras (Hoplocrioceras) cf. remondi" = Ancyloceras remondi
"Crioceras (Hoplocrioceras) cf. remondi" = Ancyloceras remondi Gabb 1864 ammonite
 Ammonitida - Crioceratitidae
"Crioceras (? Shasticrioceras) sp." = Crioceratites, "Crioceras (? Crioceras) sp." = Crioceratites
"Crioceras (? Shasticrioceras) sp." = Crioceratites Leveillé 1837 ammonite
"Crioceras (? Crioceras) sp." = Crioceratites Leveillé 1837 ammonite