GSC loc. 43669 - Tulsequah (Jurassic to of Canada)

Where: British Columbia, Canada (58.7° N, 133.1° W: paleocoordinates 37.0° N, 73.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Takwahoni Formation (Laberge Group), Early/Lower Toarcian to Early/Lower Toarcian (183.0 - 175.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified siliciclastic sediments

• Coarse grained, near-shore Takwahoni Fm.
• The Takwahoni Fm is a thick (3350 m) assemblage of interbedded conglomerate, greywacke, silstone, and shale.

Size class: macrofossils

Reposited in the GSC

Primary reference: G. K. Jakobs. 1997. Toarcian (Early Jurassic) ammonoids from western North America. Geological Survey of Canada, Bulletin 428:137pp. [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 56223: authorized by Martin Aberhan, entered by Sabine Nürnberg on 16.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Hildoceratidae
"Harpoceras cf. exaratum" = Eleganticeras exaratum
"Harpoceras cf. exaratum" = Eleganticeras exaratum Young and Bird 1828 ammonite