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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.

Update: Drilling of dinosaur-killing impact crater explains buried circular hills by Eric Hand, Science News, Nov. 17, 2016 http://www.sciencemag.org/news/2016/11/update-drilling-dinosaur-killing-impact-crater-explains-buried-circular-hills Wendel, J., 2016, Cores from crater tied to dinosaur demise validate impact theory, Eos, 97, doi:10.1029/2016EO063123. Published on 17 November 2016. https://eos.org/articles/cores-crater-tied-dinosaur-demise-validate-impact-theory the paper is: Morgan, J. V., S. P. S. Gulick, and many others, 2016, The formation of peak rings in large impact craters. vol. 354, no. 6314, pp. 878-882 DOI: 10.1126/science.aah6561 http://science.sciencemag.org/content/354/6314/878 Yours, Paul H.

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.