Also known as MVA(F)85-165

Where: British Columbia, Canada (49.6° N, 121.9° W: paleocoordinates 47.9° N, 69.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Homolsomites packardi ammonoid zone, Brokenback Hill Formation, Early/Lower Hauterivian (136.4 - 130.0 Ma)

• Dark grey siltstone of the Brokenback Hill Formation. The Brokenback Hill Fm ranges from upper Valanginian to middle Albian in age. All colllections have relatively fine temporal resolution however due to ammonite biostratigraphy. SPECIFIC AGE DATA: Presumably from some part of the Homolsomites packardi zone and or early Hauterivian age in terms of international standard stages (see Imlay, 1960). The H. packardi zone is younger than the upper Valanginian Buchia crassicollis zone and older than the mid-Hauterivian Simbirskites (Hollisites) lucasi and Speentoniceras agnessense zone. (see Jeletzky and Tipper, 1968)

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, gray siltstone

Size class: macrofossils

Preservation: cast, mold/impression

Reposited in the GSC

Collection methods: surface (in situ),

• Collections made in 1985by A.J. Arthur and P.L. Smith; collections reposited in the GSC.

Primary reference: A. J. Arthur, P. L. Smith, J. W. H. Monger and H. W. Tipper. 1993. Mesozoic stratigraphy and Jurassic paleontology west of Harrison Lake, southwestern British Columbia. Geological Survey of Canada Bulletin 441:1-62 [A. Miller/A. Hendy/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 57080: authorized by Austin Hendy, entered by Austin Hendy on 01.12.2005

Creative Commons license: CC BY (attribution)