T714-254 (Cryogenian of Canada)

Where: Yukon, Canada (65.3° N, 141.0° W: paleocoordinates 0.0° N, 0.0° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Fifteenmile Group, Cryogenian (850.0 - 635.0 Ma)

Environment/lithology: lithified, concretionary, gray, calcareous, cherty/siliceous carbonate and lithified, argillaceous shale

• ~173 m of dark gray limestone rhythmite with interbedded shale and tabular clast debris flows. The mineralized microfossils are in early diagenetic black chert nodules from ~3 m

•of section near the top of this unit. These facies are interpreted as subtidal in a shallowing-upward sequence. The entire section is intruded by numerous NNW-trending mafic dikes

Size class: microfossils

Preservation: concretion, permineralized, original phosphate, original carbon

Collected by Phoebe Cohen, Francis Macdonald in 2007

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

Primary reference: P. A. Cohen and A. H. Knoll. 2012. Scale Microfossils from the mid Neoproterozoic Fifteenmile Group, Yukon. Journal of Paleontology 86(5):775-800 [P. Cohen/P. Cohen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 148725: authorized by Phoebe Cohen, entered by Phoebe Cohen on 25.07.2013

Creative Commons license: CC BY (attribution)

Taxonomic list