ammonites
Black Bear Ridge, Transitional Beds, Unit 5, Sample 82BBR3 (Triassic of Canada)

Where: British Columbia, Canada (56.1° N, 123.1° W: paleocoordinates 33.5° N, 52.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Transitional Beds Formation, Lacian (221.5 - 215.6 Ma)

• Lower Norian; Sample 82BBR3 from Gibson&Edwards Unit 5, Zones: Primitius (Conodont), Kerri (Ammonoid)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, silty dolomite and lithified, gray, carbonaceous limestone

• The Transitional Beds, approx. 28 m thick, consist of clean, silty dolostone, intercalated with dark grey carbonaceous limestone.

Size classes: macrofossils, microfossils

Primary reference: M. J. Orchard, J. P. Zonneveld, M. J. Johns, C. A. McRoberts, M. R. Sandy, E. T. Tozer, and G. G. Carrelli. 2001. Fossil succession and sequence stratigraphy of the Upper Triassic of Black Bear Ridge, northeast British Columbia, a GSSP prospect for the Carnian-Norian boundary. . Albertiana 25:10-22 [W. Kiessling/S. Nurnberg/S. Nurnberg] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 47336: authorized by Wolfgang Kiessling, entered by Sabine Nürnberg on 23.02.2005