Where: Yukon, Canada (65.3° N, 140.9° W: paleocoordinates 0.0° N, 0.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Fifteenmile Group, Tonian (1000.0 - 850.0 Ma)

• Originally assigned to "Unit 5" of the upper Tindir Group, and thought to be either latest Neoproterozoic or earliest Cambrian. Stratigraphic revisions by Macdonald et al. (2010) determined that the unit is the upper part of the Fifteenmile Group and U/Pb radiometric ages constrained the fossiliferous units to between 811.5 and 717.4 Ma.

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified, gray, cherty/siliceous lime mudstone

Size class: microfossils

Preservation: permineralized, original phosphate, original carbon

Collected by Carol Allison

Collection methods: bulk, chemical, peel or thin section,

• Repository: University of Alaska Museum

Primary reference: C. W. Allison and J. W. Hilgert. 1986. Scale microfossils from the early Cambrian of Northwest Canada. Journal of Paleontology 60:973-1015 [P. Cohen/P. Cohen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 148717: authorized by Phoebe Cohen, entered by Phoebe Cohen on 25.07.2013, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)