GSC 92513, Kingak Fm, Johnson Creek, northern Yukon (Jurassic of Canada)

Where: Yukon, Canada (68.1° N, 138.1° W: paleocoordinates 66.1° N, 54.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Kingak Formation, Aalenian (174.1 - 170.3 Ma)

Environment/lithology: marine; sandstone

• Table 1 gives broad lithologic descriptions of the formations in the study area. During the Aalenian, the Kingak Fm is predominantly sandstone, otherwise it is mostly shale and siltstone.

Size class: macrofossils

Reposited in the GSC

Collection methods: surface (in situ),

Primary reference: T.P. Poulton. 1991. Hettangian through Aalenian (Jurassic) guide fossils and biostratigraphy, Northern Yukon and adjacent Northwest Territories. Geological Survey of Canada Bulletin (410)1-95 [A. Miller/K. Layou/K. Layou]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 34205: authorized by Arnold Miller, entered by Karen Layou on 21.08.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Graphoceratidae
Leioceras cf. opalinum Reinecke 1818 ammonite