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 148721: authorized by Phoebe Cohen, entered by Phoebe Cohen on 25.07.2013, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
"Balbariniella praestans" = Balbiriniella praestans
"Balbariniella praestans" = Balbiriniella praestans Oehler 1978 | |
unclassified | |
Glenobotrydion aenigmatis Schopf 1968 | |
Coccogoneae | |
Tetraphycus major Oehler 1978 | |
Hormogoneae | |
"Eomycetopsis robusta" = Siphonophycus robustum
"Eomycetopsis robusta" = Siphonophycus robustum Schopf 1968 | |
Myxococcoides minor | |
Myxococcoides cf. minor Schopf 1968 | |
Archeoxybaphon amydrum, Archeoxybaphon serratacapacis, Paleohexadictyon coroniforme, Paleohexadictyon myriotrematum, Paleohexadictyon litosum, Petasisquama laciniata, Petasisquama versicorona, Petasisquama alta, Characodictyon diskolopium, Characodictyon skolopium
Archeoxybaphon serratacapacis Cohen and Knoll 2012
Paleohexadictyon myriotrematum Allison and Hilgert 1986
Paleohexadictyon litosum Allison and Hilgert 1986
Petasisquama laciniata Allison and Hilgert 1986
Petasisquama versicorona Allison and Hilgert 1986
Petasisquama alta Allison and Hilgert 1986
Characodictyon skolopium Allison and Hilgert 1986 | |
Confinisquama fimbriata | |
Confinisquama fimbriata Allison and Hilgert 1986 | |
Patinisquama cirratomarginata | |
Patinisquama cirratomarginata Allison and Hilgert 1986 | |
Hyaloxybaphon monokeramoides | |
Hyaloxybaphon monokeramoides Allison and Hilgert 1986 | |
Altarmilla multistriata | |
Altarmilla multistriata Allison and Hilgert 1986 | |
Bicorniculum brochum | |
Bicorniculum brochum Allison and Hilgert 1986 | |
Invaginatibalteus depressus | |
Invaginatibalteus depressus Allison and Hilgert 1986 | |
Invaginatibalteus dimorphus | |
Invaginatibalteus dimorphus Allison and Hilgert 1986 | |
Radiocerniculum inornatum | |
Radiocerniculum inornatum Allison and Hilgert 1986 | |
Spinicerniculum tribulosum | |
Spinicerniculum tribulosum Allison and Hilgert 1986 | |
Aqualisquama centritubula | |
Aqualisquama centritubula Allison and Hilgert 1986 | |
Paterasquama crassa | |
Paterasquama crassa Allison and Hilgert 1986 | |
Chlorococcaceae | |
Palaeoanacystis vulgaris Schopf 1968 |