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 138310: authorized by Phoebe Cohen, entered by Phoebe Cohen on 11.01.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
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Characodictyon skolopium, Paleomegasquama arctoa, Paleomegasquama coccolithoides, Paleohexadictyon litosum, Paleohexadictyon myriotrematum, Paleohexadictyon alexandrae, Circitorquis soccus, Archeoxybaphon polykeramoides, Archeoxybaphon serratapusillum, Archeoxybaphon serratacapacis, Thorakidictyon myriocanthum, Thorakidictyon circireticulum, Quadrireticulum allisoniae, Quadrireticulum palmaspinosum, Petasisquama versicorona, Petasisquama laciniata, Petasisquama petasus, Petasisquama alta, Hexacatillus allmonii, Circidentatus variodentatus, Circidentatus pistricis, Ospercapatera awramikii, Paleoscutula convocationis, Paleoscutula serrata, Paleoscutula inornata
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| Altarmilla multistriata |
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| Hyaloxybaphon monokeramoides |
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| Paleocrassilimbus spinosus |
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| Aqualisquama centritubula |
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| Confinisquama fimbriata |
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| Patinisquama cirratomarginata |
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| Spinicerniculum tribulosum |
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| Invaginatibalteus dimorphus |
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| Invaginatibalteus depressus |
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| Bicorniculum brochum |
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| Paterasquama crassa |
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| Radiocerniculum inornatum |
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