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Found 39 results

  1. Oxytropidoceras
    Scientists Uncover New Information Regarding an Ancient Mass Extinction Event Florida state University, SciTechDailey, December 22, 2022 The open access paper is: Them, T.R., Owens, J.D., Marroquín, S.M., Caruthers, A.H., Alexandre, J.T. and Gill, B.C., 2022. Reduced Marine Molybdenum Inventory Related to Enhanced Organic Carbon Burial and an Expansion of Reducing Environments in the Toarcian (Early Jurassic) Oceans. AGU Advances, 3(6), p.e2022AV000671. open access Yours, Paul H.
  2. Oxytropidoceras

    New BBC Dinosaur Wildlife Documentary

    Oxytropidoceras replied to Neanderthal Shaman's topic in Fossil News

    Tanis: Fossil of dinosaur killed in asteroid strike found, scientists claim Jonathan Amos, BBC News, April 6, 2022 Scientists find fossil from THE DAY the dinosaurs died 66m years ago: Leg of Thescelosaurus was 'ripped off in aftermath' of huge asteroid strike that wiped out most species on Earth, The Daily Mail, April 7, 2022 Among the caims made is: "Experts found the fossilised leg of a dinosaur killed and what appears to be a fragment of the asteroid itself" Yours, Paul H.
  3. Oxytropidoceras
    Clam fossils help scientists find errors in evolutionary tree calculations by Louise Lerner, University of Chicago, PhysOrg, Decemebr 2, 2021 Tha paywalled paper is: Nicholas M. A. Crouch et al, Calibrating phylogenies assuming bifurcation or budding alters inferred macroevolutionary dynamics in a densely sampled phylogeny of bivalve families, Proceedings of the Royal Society B: Biological Sciences (2021). DOI: 10.1098/rspb.2021.2178 Yours, Paul H.
  4. DE&i
    Hi there... Elliot here. Could someone name some species of brachiopods please that became extinct during mass extinction event's. As I'm struggling to find any references. Thank you very much. Elliot.
  5. CornelDumitru
    Hello! Please help me with this two part question. First, to ID the fossil. The following 3 specimens are imprinted on the same ("the upper") side of this rock. Specimen #1: Specimen #2: Specimen #3:
  6. Oxytropidoceras
    The dinosaurs didn’t go out the way you think they did — study The paper is: Pickersgill, A.E., Mark, D.F., Lee, M.R., Kelley, S.P. and Jolley, D.W., 2021. The Boltysh impact structure: An early Danian impact event during recovery from the K-Pg mass extinction. Science Advances. Vol. 7, no. 25, eabe6530 DOI: 10.1126/sciadv.abe6530 Yours, Paul H.
  7. Oxytropidoceras
    The Shunga Event; did a Precambrian mass extinction give rise to an ancient supergiant oil field? Geological Digressions, Earth science resources, SCICOMM Ancient Earth, Precambrian geology, origin of life, atmosphere, oceans Yours, Paul H.
  8. Oxytropidoceras
    How the Dinosaur-Killing Asteroid Spurred the Evolution of the Modern Rainforest New evidence from fossil plants shows today’s South American rainforests arose in the wake of Earth’s fifth mass extinction. Smithsonian Magazine Prior to the Chicxulub impact, rainforests looked very different Plant fossils from Colombia show a turnover from conifers to today's forests. by Doug Johnson, Ars Technica, April 1, 2021 Paper Carvalho, M.R., Jaramillo, C., de la Parra, F. et al. 2021. Extinction at the end-Cretaceous and the origin of modern
  9. Oxytropidoceras
    Kaiho, K., Aftabuzzaman, M., Jones, D.S. and Tian, L., 2020. Pulsed volcanic combustion events coincident with the end-Permian terrestrial disturbance and the following global crisis. Geology. vol 49. Open access Researchgate PDF file of above paper PDF files of related papers Biswas, R.K., Kaiho, K., Saito, R., Tian, L. and Shi, Z., 2020. Terrestrial ecosystem collapse and soil erosion before the end-Permian marine extinction: Organic geochemical evidence from marine and non-marine records. Global and Planetary Chan
  10. Thecosmilia Trichitoma
    The article from Science Daily= https://www.sciencedaily.com/releases/2021/01/210105130123.htm The Source Paper= https://www.cambridge.org/core/journals/paleobiology/article/cretaceouspaleogene-plant-extinction-and-recovery-in-patagonia/94645848E3BE16AC818320248C725734 (I found this paper to be quite well written, and would recommend you read it too.)
  11. Oxytropidoceras
    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.
  12. Oxytropidoceras
    Exploding stars may have caused mass extinction on Earth, study shows, University of Illinois at Urbana-Champaign, August 18, 2020 "Killer cosmic rays from nearby supernovae could be the culprit behind at least one mass extinction event, researchers said, and finding certain radioactive isotopes in Earth's rock record could confirm this scenario." The open access paper is: Brian D. Fields, Adrian L. Melott, John Ellis, Adrienne F. Ertel, Brian J. Fry, Bruce S. Lieberman, Zhenghai Liu, Jesse A. Miller, Brian C. Thomas. Super
  13. Oxytropidoceras
    Texas cave sediment upends meteorite explanation for global cooling by Baylor University August 1, 2020 https://phys.org/news/2020-07-texas-cave-sediment-upends-meteorite.html The paper is: Sun, N, Brandon, A.D., Forman, S.L., Waters, M.R. and Befus, K.S., 2020. Volcanic origin for Younger Dryas geochemical anomalies ca. 12,900 cal B.P. Science Advances, 6(31), eaax8587 https://advances.sciencemag.org/content/6/31/eaax8587 Related papers: Holliday, V.T., Bartlein, P.J., Scott, A.C. and Marlon, J.R., 2020. Ext
  14. Oxytropidoceras
    Asteroid shower rained space rocks on Earth and the moon 800 million years ago By Charles Q. Choi, SpaceCom, July 21, 2020 Asteroid shower on the Earth-Moon system 800 million years ago revealed by lunar craters by Osaka University, PhysOrg, July 21, 2020 The open access paper is: Terada, K., Morota, T. & Kato, M. Asteroid shower on the Earth-Moon system immediately before the Cryogenian period revealed by KAGUYA. Nature Communications (2020). DOI: 10.1038/s41467-020-17115-6 Yours, Paul H.
  15. Oxytropidoceras
    New insight into the Great Dying, University of Leeds, June 11, 2020 https://phys.org/news/2020-06-insight-great-dying.html The open access paper is: Jacopo Dal Corso, Benjamin J. W. Mills, Daoliang Chu, Robert J. Newton, Tamsin A. Mather, Wenchao Shu, Yuyang Wu, Jinnan Tong, and Paul B. Wignall (2020) Permo-Triassic boundary carbon and mercury cycling linked to terrestrial ecosystem collapse. Nature Communications 11, Article number: 2962 doi: https://doi.org/10.1038/s41467-020-16725-4 https://www.nature.com/articles/s41467-02
  16. Oxytropidoceras
    Coal-burning in Siberia led to climate change 250 million years ago, Arizona State University https://asunow.asu.edu/20200615-coal-burning-siberia-led-climate-change-250-million-years-ago Elkins-Tanton, L.T., Grasby, S.E., Black, B.A., Veselovskiy, R.V., Ardakani, O.H. and Goodarzi, F., 2020. Field evidence for coal combustion links the 252 Ma Siberian Traps with global carbon disruption. Geology, 48. (open access) https://pubs.geoscienceworld.org/gsa/geology/article/doi/10.1130/G47365.1/587319/Field-evidence-for-coal-combustion-links-the-252
  17. Oxytropidoceras
    There is a series of open access papers about what caused the Late Ordovician mass extinction. They are: Bond, D.P. and Grasby, S.E., 2020. Late Ordovician mass extinction caused by volcanism, warming, and anoxia, not cooling and glaciation. Geology. https://pubs.geoscienceworld.org/gsa/geology/article/doi/10.1130/G47377.1/586486/Late-Ordovician-mass-extinction-caused-by Mitchell, C. E., and Melchin, M.J., 2020. COMMENT: Late Ordovician mass extinction caused by volcanism, warming, and anoxia, not cooling and glaciation. Geology
  18. Oxytropidoceras
    End-Devonian Mass Extinction Caused by Erosion of Ozone Layer, New Study Finds, Sci-News. May 28, 2020 http://www.sci-news.com/paleontology/end-devonian-mass-extinction-erosion-ozone-layer-08477.html No asteroids needed: ancient mass extinction tied to ozone loss, warming climate By Paul Voosen Science News, May. 27, 2020 https://www.sciencemag.org/news/2020/05/no-asteroids-or-volcanoes-needed-ancient-mass-extinction-tied-ozone-loss-warming The open access paper is: John E. A. Marshall, Jon Lakin, Troth, and Sarah M. Wallac
  19. Oxytropidoceras
    Green, C. E., 2019. Investigating the origin of a Greenland ice core geochemical anomaly near the Bølling-Allerød/Younger Dryas boundary (Doctoral dissertation, Durham University). http://etheses.dur.ac.uk/13490/ http://etheses.dur.ac.uk/13490/1/C_Green_thesis_final_CORRECTIONS.pdf Green (2019) noted: "The source of a platinum peak identified in the Greenland Ice Sheet Project 2 (GISP2) ice core associated with high platinum/iridium (Pt/Ir) and platinum/aluminium (Pt/Al) ratios, and previous research attributed the anomaly to an
  20. Oxytropidoceras
    Racki, G., 2020, Volcanism as a prime cause of mass extinctions: Retrospectives and perspectives, in Adatte, T., Bond, D.P.G., and Keller, G., eds., Mass Extinctions, Volcanism, and Impacts: New Developments: Geological Society of America Special Paper 544, p. 1–34 https://www.researchgate.net/publication/337951571_Volcanism_as_a_prime_cause_of_mass_extinctions_Retrospectives_and_perspectives https://www.researchgate.net/profile/Grzegorz_Racki Racki, G., Rakociński, M., Marynowski, L. and Wignall, P.B., 2018. Mercury enrichments and the Frasnian-Fa
  21. msantix
    A new study shows that stony corals, which provide food and shelter for almost a quarter of all ocean species, are preparing for a major extinction event. Researchers identified an increased prevalence of certain traits found with previous extinction-survival characteristics among corals. By studying the fossil record of coral skeletons, they were able to determine that corals are showing some survival traits that match the last major extinction event 66mya. These traits include an increase in deep water residence, cosmopolitan distributions, smaller colonies, non-symbiotic relati
  22. Oxytropidoceras
    Yale University. "In death of dinosaurs, it was all about the asteroid -- not volcanoes." ScienceDaily. ScienceDaily, 16 January 2020. https://www.sciencedaily.com/releases/2020/01/200116141708.htm Meteorite or Volcano? New Clues to the Dinosaurs’ Demise Twin calamities marked the end of the Cretaceous period, and scientists are presenting new evidence of which drove one of Earth’s great extinctions. New York Times, January 16, 2020 https://www.nytimes.com/2020/01/16/science/dinosaurs-extinction-meteorite-volcano.html The paper is:
  23. Oxytropidoceras
    The Dinosaur-Killing Asteroid Acidified the Ocean in a Flash The Chicxulub event was as damaging to life in the oceans as it was to creatures on land, a study shows. New York Times https://www.nytimes.com/2019/10/21/science/chicxulub-asteroid-ocean-acid.html Tiny shell fossils reveal how ocean acidification can cause mass extinction By Julie Zaugg, CNN, October 22, 2019 https://www.cnn.com/2019/10/22/europe/ocean-acidification-asteroid-intl-hnk-scn/index.html New study underpins the idea of a sudden impact killing off dinosaurs and much
  24. Oxytropidoceras
    New evidence suggests volcanoes caused biggest mass extinction ever Mercury found in ancient rock around the world supports theory that eruptions caused 'Great Dying' 252 million years ago. University of Cincinnati, Science Daily, April 15, 2019 https://www.sciencedaily.com/releases/2019/04/190415122249.htm The open access paper is: Jun Shen, Jiubin Chen, Thomas J. Algeo, Shengliu Yuan, Qinglai Feng, Jianxin Yu, Lian Zhou, Brennan O’Connell, Noah J. Planavsky. Evidence for a prolonged Permian–Triassic extinction interval from global mar
  25. Kasia

    Meet the Antarctic king

    Kasia posted a topic in Fossil News

    https://www.eurekalert.org/pub_releases/2019-01/fm-idc012319.php http://blogs.discovermagazine.com/deadthings/2019/01/31/antarctanax/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A DiscoverBlogs (Discover Blogs)
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