Graham Island (I11-Ghost Creek Fm), Queen Charlotte Islands, B.C. (Jurassic of Canada)

Where: British Columbia, Canada (53.4° N, 132.3° W: paleocoordinates 1.8° N, 126.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Ghost Creek Formation (Maude Group), Imlayi (189.6 - 186.7 Ma)

Environment/lithology: marine; shale

• for entire formation: dark, pyritic shales; occasional sandstones and nodular limestones are present and the top of the formation becomes locally glauconitic in the north. oil stains and bitumen are pervasive

Size class: macrofossils

Collection methods: surface (in situ),

Primary reference: P. L. Smith and H. W. Tipper. 1996. Pliensbachian (Lower Jurassic) ammonites of the Queen Charlotte Islands, British Columbia. Bulletins of American Paleontology 108(348):1-122 [A. Miller/K. Layou/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 33171: authorized by Arnold Miller, entered by Karen Layou on 23.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Coeloceratidae
Pseudoskirroceras imlayi
Pseudoskirroceras imlayi Smith and Tipper 1988 ammonite
 Ammonitida - Polymorphitidae
Tropidoceras "sp. 1", Tropidoceras cf. erythraeum, Tropidoceras aff. rursicosta
Tropidoceras "sp. 1" Hyatt 1867 ammonite
Tropidoceras cf. erythraeum Gemmellaro 1884 ammonite
Tropidoceras aff. rursicosta Buckman 1918 ammonite