Where: Yukon, Canada (65.3° N, 141.0° 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: concretion, permineralized, original phosphate, original carbon
Collected by Bruce Clardy in 1975
Collection methods: chemical, peel or thin section
• Repository: University of Alaska Museum
Primary reference: C. W. Allison and S. M. Awramik. 1989. Organic-walled microfossils from earliest Cambrian or latest Proterozoic Tindir Group rocks, northwest Canada. Precambrian Research 43:253-294 [P. Cohen/M. Hernandez/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 227536: authorized by Matthew Clapham, entered by Matthew Clapham on 15.10.2022
Creative Commons license: CC BY (attribution)
Taxonomic list