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Found 8 results

  1. 520-million-year-old animal fossils might not be animals after all The specimens may be an ancient type of algae, not creatures known as bryozoans ScienceNews, March 10, 2023 The paywalled paper is: Yang, J., Lan, T., Zhang, X.G. and Smith, M.R., 2023. Protomelission is an early dasyclad alga and not a Cambrian bryozoan. Nature, published online, March 8, 2023 pp.1-5. Yorus, Paul H.
  2. Extraordinary soft-bodied fossils highlight the Cambrian explosion Derek Briggs, Yale University The Cambrian Explosion and the evolutionary origin of animals Professor Paul Smith, Oxford University Museum of Natural History What triggered the Cambrian Explosion? Professor Rachel Wood, University of Edinburgh Virtual palaeontology: bringing the first animals to life in 3D Dr Imran Rahman, Oxford University Museum of Natural History An alternative reading of the history of life using trace fossils Professor Gabriela Mángano, University of Saskatchewan, Canada Yours, Paul H.
  3. Supermountains controlled the evolution of life on Earth Australian National University, February 2, 2022 EurekaAlert posting Scientists discover lost range of 'supermountains' three times longer than the Himalayas By Brandon Specktor, Live Science, February 4, 2022 The destruction of these ancient mountains may have fueled Earth's biggest evolution booms. Selected papers: Zhu, Z., Campbell, I.H., Allen, C.M., Brocks, J.J. and Chen, B., 2022. The temporal distribution of Earth's supermountains and their potential link to the rise of atmospheric oxygen and biological evolution. Earth and Planetary Science Letters, 580, p.117391. Squire, R.J., Campbell, I.H., Allen, C.M. and Wilson, C.J., 2006. Did the Transgondwanan Supermountain trigger the explosive radiation of animals on Earth?. Earth and Planetary Science Letters, 250(1-2), pp.116-133. Yorus, Paul H.
  4. The strange race to track down a missing billion years Zaria Gorvett, BBC News, September 1, 2021 A billion years have vanished from the geological record – and over 152 years after this was first discovered, scientists can't agree on why. Some papers: Peters, S.E. and Gaines, R.R., 2012. Formation of the ‘Great Unconformity’as a trigger for the Cambrian explosion. Nature, 484(7394), pp.363-366. Keller, C.B., Husson, J.M., Mitchell, R.N., Bottke, W.F., Gernon, T.M., Boehnke, P., Bell, E.A., Swanson-Hysell, N.L. and Peters, S.E., 2019. Neoproterozoic glacial origin of the Great Unconformity. Proceedings of the National Academy of Sciences, 116(4), pp.1136-1145. Open access Marshak, S., Domrois, S., Abert, C., Larson, T., Pavlis, G., Hamburger, M., Yang, X., Gilbert, H. and Chen, C., 2017. The basement revealed: Tectonic insight from a digital elevation model of the Great Unconformity, USA cratonic platform. Geology, 45(5), pp.391-394. Yours, Paul H.
  5. Oxygen levels also important in biodiversity of trace fossils. https://phys.org/news/2020-08-ancient-life-story-early-diversity.html
  6. These tracks were made by a foot-long worm on a "death march" 550 million years ago. Newsweek, Sept. 4, 2019 (has pictures ) https://www.newsweek.com/ancient-worm-tracks-evolution-life-1457624 Barras, C., 2019. Ancient worm fossil rolls back origins of animal life. Nature, 573(7772), p.15. https://www.nature.com/articles/d41586-019-02556-x https://www.nature.com/magazine-assets/d41586-019-02556-x/d41586-019-02556-x.pdf Chen, Z., Zhou, C., Yuan, X. and Xiao, S., 2019. Death march of a segmented and trilobate bilaterian elucidates early animal evolution. Nature, pp.1-4. https://www.nature.com/articles/s41586-019-1522-7 Yours, Paul H.
  7. Study of Russian fossils and geochemistry adds evidence that the Cambrian explosion was influenced by rising oxygen levels https://www.google.com/amp/s/www.sciencealert.com/earth-s-oxygen-levels-may-have-guided-animal-evolution-during-the-cambrian-explosion/amp
  8. Fossil-Hound

    Elrathia kingii

    Collected on a field trip to U-Dig Utah and prepared at the U-Dig site station. After a light mechanical brush exposed the shale, mineral oil was applied with another brush for a polished finish.
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