Diagonal Mountain 2a, Smithers Formation (Jurassic of Canada)

Where: British Columbia, Canada (56.7° N, 127.3° W: paleocoordinates 41.5° N, 70.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Smithers Formation, Bajocian (170.3 - 168.3 Ma)

• late Bajocian, Tuff layer in Smithers Formation, fossils from bed some 30 m below tuff.

• bed-level stratigraphic resolution

Environment/lithology: marine; siliciclastic sediments and fine-grained siliciclastic

• colour-banded fine clastics interbedded with rare tuff layers

Size class: macrofossils

Primary reference: J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37603: authorized by John Alroy, entered by Erin Leckey on 18.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Stephanoceratidae
Stephanoceras sp. Waagen 1869 ammonite
 Ammonitida - Perisphinctidae
Leptosphinctes cf. meseres ammonite
L. (Prorsisphinctes) cf. meseres