Diagonal Mountain 3b, Smithers Formation (Jurassic to of Canada)

Where: British Columbia, Canada (56.7° N, 127.3° W: paleocoordinates 43.1° N, 70.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Smithers Formation (Hazelton Group), Bathonian to Bathonian (168.3 - 163.5 Ma)

• late Bathonian-early Callovian, above the tuff layer

• bed-level stratigraphic resolution

Environment/lithology: marine; mudstone and tuff

• cream-coloured tuff layer interbedded in a thick succession of dark mudstone

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 37626: authorized by John Alroy, entered by Erin Leckey on 18.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Sphaeroceratidae
Iniskinites sp. Imlay 1975 ammonite
 Phylloceratida - Phylloceratidae
Adabofoloceras sp. Joly 1977 ammonite
or Lilloettia sp.