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Showing results for tags 'carbon isotopes'.
Why did trilobites go extinct? By Donavyn Coffey, Live Science, November 2020 https://www.livescience.com/why-trilobites-went-extinct.html The open access paper is: Jonathan L. Payne, Alexandra V. Turchyn, Adina Paytan, Donald J. DePaolo, Daniel J. Lehrmann, Meiyi Yu, and Wei, Calcium isotope constraints on the end-Permian mass extinction. PNAS May 11, 2010 107 (19) 8543-8548 https://www.pnas.org/content/107/19/8543 A totally unrelated article is: The role of cat eye narrowing in cat-human communication by El
Scientists Just Found The Cause of Earth's First Global Warming That Triggered Mass Extinctions Michelle Starr, Science Alerts, July 3, 2018 https://www.sciencealert.com/world-s-first-animals-cambrian-explosion-global-warming-mass-extinction World's first animals caused global warming University of Exeter, PhysOrg, July 2, 2018, https://phys.org/news/2018-07-world-animals-global.html https://www.sciencedaily.com/releases/2018/07/180702094038.htm http://www.exeter.ac.uk/news/featurednews/title_667955_en.html The abstract is at:
Oxytropidoceras posted a topic in Fossil NewsOldest evidence of life on Earth found in Canadian rocks 3.95-billion-year-old Labrador rocks contain graphite that appears to come from living organisms Emily Chung, CBC News, September 28, 2017 http://www.cbc.ca/beta/news/technology/oldest-earliest-life-labrador-1.2503953 Oldest signs of life on Earth may be in 3.95 billion-year-old rocks By Sarah Kaplan, Washington Post, September 28 https://www.washingtonpost.com/news/speaking-of-science/wp/2017/09/28/oldest-signs-of-life-on-earth-may-be-in-3-95-billion-year-old-rocks/ Found: Oldest Evi