The Blueflower Formation is a geologic formation in the Northwest Territories, and is a part of the Rackla Group.[1] It preserves fossils dating back to the Ediacaran period.[3]
Paleobiota
Unlike most other Ediacaran formations, the Blueflower Formation is unique in that is preserves shallow and deep-marine environments, and as it correlates with other Avalonian formations such as those in Newfoundland and Labrador, it allowed scientists to figure out whether the Ediacaran Biota started out in deep-marine environments before making their way into shallower waters.[1] The forms that can be found across the formation are the familiar Petalonamae such as Charniodiscus, including juvenile petalonamids from the Lower Member, and from the Upper Member tubular forms such as Annulatubus, and the enigmatic Windermeria.[1]
|
|
|
|
Color key
|
|
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
|
Proarticulata
Petalonamae
| Genus
|
Species
|
Notes
|
Images
|
| Charniodiscus[5][1]
|
|
Frondose organism.
|
|
| Juvenile Fronds[1]
|
- Arborea ?
- Charniodiscus ?
- Trepassia ?
|
Juvenile frondose organisms, exact genus affinities unknown.
|
|
| Pteridinium[6]
|
|
Frondose organism.
|
|
Cnidarian
incertae sedis
Flora
Ichnogenera
Undescribed
| Genus
|
Species
|
Notes
|
Images
|
| problematicum[1]
|
|
Curves and loops around, affinities unknown.
|
|
See also
References
- ^ a b c d e f g h i j k l m Boag, Thomas H.; Busch, James F.; Gooley, Jared T.; Strauss, Justin V.; Sperling, Erik A. (May 2024). "Deep‐water first occurrences of Ediacara biota prior to the Shuram carbon isotope excursion in the Wernecke Mountains, Yukon, Canada". Geobiology. 22 (3). doi:10.1111/gbi.12597.
- ^ a b Moynihan, David P.; Strauss, Justin V.; Nelson, Lyle L.; Padget, Colin D. (1 September 2019). "Upper Windermere Supergroup and the transition from rifting to continent-margin sedimentation, Nadaleen River area, northern Canadian Cordillera". GSA Bulletin. 131 (9–10): 1673–1701. doi:10.1130/B32039.1.
- ^ a b c d e f g h Carbone, Calla A.; Narbonne, Guy M.; Macdonald, Francis A.; Boag, Thomas H. (March 2015). "New Ediacaran fossils from the uppermost Blueflower Formation, northwest Canada: disentangling biostratigraphy and paleoecology". Journal of Paleontology. 89 (2): 281–291. doi:10.1017/jpa.2014.25.
- ^ a b Narbonne, Guy M. (May 1994). "New Ediacaran fossils from the Mackenzie Mountains, northwestern Canada". Journal of Paleontology. 68 (3): 411–416. doi:10.1017/S0022336000025816.
- ^ a b c d e f Narbonne, Guy M; Hofmann, Hans J. "Ediacaran biota of the Wernecke Mountains, Yukon, Canada" (PDF). Palaeontology.
- ^ Sperling, Erik A.; Carbone, Calla; Strauss, Justin V.; Johnston, David T.; Narbonne, Guy M.; Macdonald, Francis A. (March 2016). "Oxygen, facies, and secular controls on the appearance of Cryogenian and Ediacaran body and trace fossils in the Mackenzie Mountains of northwestern Canada". Geological Society of America Bulletin. 128 (3–4): 558–575. doi:10.1130/B31329.1.
- ^ a b c d e f Narbonne, Guy M; Aitken, James D. "Ediacaran fossils from the Sekwi Brook area, Mackenzie Mountains, northwestern Canada" (PDF). Paleontology.
- ^ a b Pyle, Leanne J; Narbonne, Guy M; James, Noel P; Dalrymple, Robert W; Kaufman, Alan J (June 2004). "Integrated Ediacaran chronostratigraphy, Wernecke Mountains, northwestern Canada". Precambrian Research. 132 (1–2): 1–27. doi:10.1016/j.precamres.2004.01.004.