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Showing results for tags 'yukon'.
Found 13 results
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The first whole baby mammoth to be found in North America. https://www.cbc.ca/news/canada/north/yukon-wooly-mammoth-long-term-plan-trondek-hwechin-1.7051002
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I found this in the banks of the Yukon River in Alaska yesterday. this spring it flooded and 20ish feet of riverbank was washed away. this was in the washed-out area. it seems to be hard like petrified. At first i thought it was part of an antler but asking around here people did not think it was from a moose because it was to flat and has a knob and not the right shape. so maybe another horned mammal or a bone. Any ideas? it is hard and cannot scratch it it is 7 inches long and 4 inches at the widest part
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Exquisitely preserved 30-35 day old woolly mammoth found in Yukon gold mine
Kane posted a topic in Fossil News
A first in North America: https://www.cbc.ca/news/canada/north/frozen-whole-baby-woolly-mammoth-yukon-gold-fields-1.6501128- 5 replies
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Mammoths and other large animals survived in the north much longer than previously believed. New DNA research indicates that the climate, not humans, led to the demise of these large creatures, Norway Science, January, 2022 The open access paper is: Wang, Y., Pedersen, M.W., Alsos, I.G., De Sanctis, B., Racimo, F., Prohaska, A., Coissac, E., Owens, H.L., Merkel, M.K.F., Fernandez-Guerra, A. and Rouillard, A.,2021. Late Quaternary dynamics of Arctic biota from ancient environmental genomics. Nature, 600(7887), pp.86-92. It concludes that mammoths survived in continental northeast Siberia until 7,300 BP; North America until 8,600 BP; and the Taimyr Peninsula as late as 3,900 BP. Yours, Paul H.
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Five Fascinating Ice Age Finds Discovered in Yukon Permafrost
Oxytropidoceras posted a topic in Fossil News
Five Fascinating Ice Age Finds Discovered in Yukon Permafrost Rachael Lallensack, Smithsonian Magazine, February 7, 2022 Yours, Paul H. -
For Late Ordovician graptolites, a long decline before extinction
Oxytropidoceras posted a topic in Fossil News
For ancient deep-sea plankton, a long decline before extinction University of Buffalo, Press release by Charlotte Hsu Sheets, H.D., Mitchell, C.E., Melchin, M.J., Loxton, J., Štorch, P., Carlucci, K.L. and Hawkins, A.D., 2016. Graptolite community responses to global climate change and the Late Ordovician mass extinction. Proceedings of the National Academy of Sciences, 113(30), pp.8380-8385. Researchgate PDF for above paper Related publications Yours, Paul H. -
Yukon paleontologist’s fossils are pure gold: Grant Zazula will be giving the 19th annual Dr. John Rae Lecture in Hamilton, focusing on the amazing lode of fossils and ancient DNA in the Yukon, and its connection with the hunt for gold. by Jeff Mahoney, The Hamilton Spectator https://www.thespec.com/opinion-story/9117772-yukon-paleontologist-s-fossils-are-pure-gold/ Paul H.
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Fossils from cat with 'steak knife' fangs, found in Yukon, give researchers something to chew on. Two fossils help provide new insight into the mysterious, and extinct, scimitar cat. CBC News, Oct 25, 2017 http://www.cbc.ca/news/canada/north/yukon-scimitar-cat-fossils-paleontologists-1.4372037 The paper is: Paijmans, J.L., Barnett, R., Gilbert, M.T.P., Zepeda-Mendoza, M.L., Reumer, J.W., de Vos, J., Zazula, G., Nagel, D., Baryshnikov, G.F., Leonard, J.A. and Rohland, N., 2017. Evolutionary History of Saber-Toothed Cats Based on Ancient Mitogenomics. Current Biology. http://b3.ifrm.com/30233/130/0/p3005065/Evolutionary_History_of_Saber_Toothed_Cats_Based_on_Ancient_Mitogenomics.pdf http://www.sciencedirect.com/science/article/pii/S0960982217311983 Other articles are: Klondike placer miner makes rare discovery of extinct muskox skull. Stuart Schmidt discovered the helmeted muskox skull and horns. during routine work on Monday. CBC News, Sep 14, 2017 http://www.cbc.ca/news/canada/north/klondike-muskox-schmidt-placer-skull-1.4290440 How one Yukon fossil helped solve an ancient mystery A single fossil found a decade ago near Old Crow prompted new d iscoveries about North America's first bison By Paul Tukker, CBC News, March16, 2017 http://www.cbc.ca/news/canada/north/yukon-fossil-bison-beringia-north-america-1.4027052 Paul H.
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Anyone intimately familiar with Phyllocarid morphology? This slab is from a lower Devonian formation in the northern Yukon Territory. These things were giants ... The well preserved Telson (tail-spike) piece is 10" long, the feeler/antennae assembly alone is 18" long ... In life the critter was likely a good meter in length. What I'm not certain about is the 8" long arm-like appendage at top, as well as a small armor like plate nearby. Over the years have found many complete trident shaped telsons and antennae but not much in the way of other body parts.
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Here's one of the head shields from the same location , which I don't think has any relation to the previously posted spiny pygidium ... This is the only type of cephalon I've recovered from that spot.
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Here's probably the most interesting piece I came across this past summer .... It's provenance, in the Yukon Territory's northern Ogilvie Mtns., just a bit south of the Arctic Circle, is what might be described as an iconic Ordovician faunal assemblage, rich in large Gastropods, Orthocerid Nautiloids, large horn and tabulate corals and relatively few Brachiopods. Trilobites, however, seem to have been a bit player in this group ... Over many years, I've found only a half dozen partial trilobites at that exact spot. The other pygidia I've found are fairly conventional, similar to Pseudogygites in appearance. However, the Cephalons I've found there are strange, and appear to belong to another species altogether (I'll post images of these later...). This thing, with it's array of spines, does not seem to match anything else I've seen ... It's about 20mm wide X 10mm in height, while what's left of the spines add another 10mm. Anybody seen one of these?
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Single-celled eukaryote fossil with evidence of mineralizing found in Yukon by Bob Yirka, June 29, 2017 https://phys.org/news/2017-06-single-celled-eukaryote-fossil-evidence-mineralizing.html Precursor of teeth and bones discovered in 810-million-year old fossils. Single-celled fossils found in Canada show the earliest evidence of a tissue-hardening process known as biomineralisation, writes Andrew Masterson, Cosmos. https://cosmosmagazine.com/palaeontology/precursor-of-teeth-and-bones-discovered-in-810-million-year-old-fossils The paper is: Cohen, P. A., J. V. Strauss, A. D. Rooney, M. Sharma, and N. Tosca, 2017, Controlled hydroxyapatite biomineralization in an ~810 million-year-old unicellular eukaryote. Science Advances. Vol. 3, no. 6, e1700095. DOI: 10.1126/sciadv.1700095 http://advances.sciencemag.org/content/3/6/e1700095.full Yours, Paul H.
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