Diagonal Mountain 2b, 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, there is no indication of the stratigraphic relationship of these fossils to the fossil bed in collection 37603, description reads "Elsewhere in the section, in which ammonites occur only sparsely, poorly preserved sonninids and stephanoceratids were found."

• bed-level stratigraphic resolution

Environment/lithology: marine; tuff 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 37604: authorized by John Alroy, entered by Erin Leckey on 18.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ammonitida - Stephanoceratidae
Stephanoceratidae indet. Neumayr 1875 ammonite