Todagin Mountain (upper unit), Hazelton Group (Jurassic of Canada)

Where: British Columbia, Canada (57.6° N, 130.1° W: paleocoordinates 32.5° N, 71.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hazelton Group, Pliensbachian (190.8 - 182.7 Ma)

• early Pliensbachian,

• bed-level stratigraphic resolution

Environment/lithology: marine; tuff and shelly/skeletal, silty, sandy shale

• basaltic to rhyolitic volcanic suite with common, predominantly fine-grained sedimentary intercalations. quartz-phyric lapilli tuff, underlain and overlain by shale, siltstone and sandstone

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 37537: authorized by John Alroy, entered by Erin Leckey on 16.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Eoderoceratidae
Metaderoceras sp., Dubariceras freboldi
Metaderoceras sp. Spath 1925 ammonite
Dubariceras freboldi Dommergues et al. 1984 ammonite
 Ammonitida - Liparoceratidae
"? Oistoceras sp." = Aegoceras (Oistoceras)
"? Oistoceras sp." = Aegoceras (Oistoceras) Buckman 1911 ammonite