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Can you help me identify this mammal from the Pleistocene of Yucatán, Mexico?
PaleoMexico posted a topic in Fossil ID
I found this mammal material, it is from the Pleistocene in a cave in Yucatán, Mexico. Can you help me identify please?- 4 replies
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- mammals
- pleistoceno
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Breakup of a long-period comet as the origin of the dinosaur extinction
Oxytropidoceras posted a topic in Fossil News
Astronomers: A comet fragment, not an asteroid, killed off the dinosaurs Jupiter's gravity pushed comet toward Sun; comet was ripped apart by tidal forces. Jennifer Ouellette, ArsTechnica, February 15, 2021 https://arstechnica.com/science/2021/02/astronomers-a-comet-fragment-not-an-asteroid-killed-off-the-dinosaurs/ The open access paper is: Siraj, A. and Loeb, A., Breakup of a Long-Period Comet as the Origin of the Dinosaur Extinction. Scientific Reports volume 11, Article number: 3803 (2021) https://www.nature.com/articles/s41598-021-82320-2 https://www.cfa.harvard.edu/~loeb/SLD.pdf Keep warm and safe out there Paul H. -
Thought this fit better here than general fossil discussion but I thought it would be fun if we talked about what it was like on that day 66 million years ago. You know it has to be a great day. What was the weather like? The day of the year? The time of day? What the dinos were doing? What on Earth was going on?
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- 66 million years ago
- cretaceous
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Life and death in the Chicxulub impact crater: A record of Paleocene-Eocene Thermal Maximum
Oxytropidoceras posted a topic in Fossil News
The open access paper is: Smith, V., Warny, S., Grice, K., Schaefer, B., Whalen, M.T., Vellekoop, J., Chenot, E., Gulick, S.P., Arenillas, I., Arz, J.A. and Bauersachs, T., 2020. Life and death in the Chicxulub impact crater: A record of the Paleocene-Eocene Thermal Maximum. Climate of the Past Discussions, pp.1-17. Related open access papers are: Smith, V., Warny, S., Jarzen, D.M., Demchuk, T., Vajda, V. and Expedition 364 Science Party, 2020. Palaeocene–Eocene miospores from the Chicxulub impact crater, Mexico. Part 1: spores and gymnosperm pollen. Palynology, 44(3), pp.473-487 Smith, V., Warny, S., Jarzen, D.M., Demchuk, T., Vajda, V. and Gulick, S.P., 2020. Paleocene–Eocene palynomorphs from the Chicxulub impact crater, Mexico. Part 2: angiosperm pollen. Palynology, pp.1-31. More papers of Dr. Vann Smith More papers Sophie Warny Yours, Paul H.-
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- eocene
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How VR Helped Archaeologists Excavate a Fossil-Rich, Water-filled, Yucatan, Cave
Oxytropidoceras posted a topic in Fossil News
How VR Helped Archaeologists Excavate a Fossil-Rich Submerged Cave NOVA, Evan Hadingham, Feb 8, 2018 http://www.pbs.org/wgbh/nova/next/tech/how-vr-helped-archaeologists-excavate-a-fossil-rich-submerged-cave/ A apper is: Collins, S.V., Reinhardt, E.G., Rissolo, D., Chatters, J.C., Blank, A.N. and Erreguerena, P.L., 2015. Reconstructing water level in Hoyo , Quintana Roo, Mexico, implications for early Paleoamerican and faunal access. Quaternary Science Reviews, 124, pp. 68-83. http://www.academia.edu/19358907/Reconstructing_water_level_in_Hoyo_Negro_Quintana_Roo_Mexico_implications_for_early_Paleoamerican_and_faunal_access https://www.sciencedirect.com/science/article/pii/S0277379115300330 Yours, Paul H. -
Chicxulub Impact Cooled Earth's Climate More than Previously Thought
Oxytropidoceras posted a topic in Fossil News
Asteroid impact plunged dinosaurs into catastrophic 'winter' By Jonathan Amos, BBC, October 31, 2017 http://www.bbc.com/news/science-environment-41825471 Dinosaur-killing asteroid impact cooled Earth's climate more than previously thought. PhysOrg, October 31, 2017 https://phys.org/news/2017-10-dinosaur-killing-asteroid-impact-cooled-earth.html The paper is: Artemieva, N., et al, 2017, Quantifying the Release of Climate-Active Gases by Large Meteorite Impacts With a Case Study of Chicxulub. Geophysical Research Letters (2017). DOI: 10.1002/2017GL074879 http://onlinelibrary.wiley.com/doi/10.1002/2017GL074879/abstract A related paper is: Pierazzo, E. and Artemieva, N., 2012. Local and global environmental effects of impacts on Earth. Elements, 8(1), pp.55-60. http://users.unimi.it/paleomag/geo2/Pierazzo&Artemieva2012.pdf Yours, Paul H.-
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Hello fossil-hunters, My family and I might soon go to Mexico on a trip. We are probably going to stay in Puerto Aventuras, Quintana Roo (Yucatan peninsula). Do any of you know some good nearby fossil sites where we could hunt? Thanks in advance, Max
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Chicxulub Impact Crater Investigation Begins in Earnest
Oxytropidoceras posted a topic in Fossil News
Chicxulub 'dinosaur crater' investigation begins in earnest by Jonathan Amos, BBC News, October 11, 2016 http://www.bbc.com/news/science-environment-37625348 In addition, Moon impacts are more frequent and hazardous then have been previously estimated. Go see; The moon has hundreds more craters than we thought Daily News, October 12, 2016 https://www.newscientist.com/article/2108929-the-moon-has-hundreds-more-craters-than-we-thought/ How old is our Moon? Hundreds of previously unseen craters could finally unlock its true age: New estimates suggest 180 craters of at least ten metres in diameter form each year by Liat Clark, Wired, A facelift for the Moon every 81,000 years, October 12, 2016 http://phys.org/news/2016-10-facelift-moon-years.html http://phys.org/news/2016-10-reveals-lunar-surface-features-younger.html The paper is: Speyerer, E. J., R. Z. Povilaitis, M. S. Robinson, P. C. Thomas, And R. V. Wagner, 2016, Quantifying crater production and regolith overturn on the Moon with temporal imaging. Nature. Vol. 538, pp. 215–218 (13 October 2016) doi:10.1038/nature19829 http://nature.com/articles/doi:10.1038/nature19829 Yours, Paul H.-
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Merry Xmas and Happy New Year to all of our Fossil Friends! We took a December getaway trip to Mexico - our annual Yucatan vacation - no fossil hunting, but to my surprise, we did see a fossil sign and rock while doing a pedal-zipline through the canopy at a jungle theme park called Xel-Ha. You can see the fossil sign and a closeup of part of the rock face which has 67 million year old marine fossils - mostly coral and some shells. On previous trips we've seen some spectacular marine fossils on the roofs of caves we explored (mixed in with the bat colonies that live in the caves). Thought you might find this to be a fun and quirky trip report, in keeping with the holidays.