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 https://www.smithsonianmag.com/science-nature/how-dinosaur-killing-asteroid-spurred-evolution-modern-rainforest-180977390/ 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 https://arstechnica.com/science/2021/04/prior-to-the-chicxulub-impact-rainforests-looked-very-different/ Paper Carvalho, M.R., Jaramillo, C., de la Parra, F. et al. 2021. Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests. Science. Vol. 372, Issue 6537, pp. 63-68 https://science.sciencemag.org/content/372/6537/63 Related papers Wing, S.L., Herrera, F., Jaramillo, C.A., Gómez-Navarro, C., Wilf, P. and Labandeira, C.C., 2009. Late Paleocene fossils from the Cerrejón Formation, Colombia, are the earliest record of Neotropical rainforest. Proceedings of the National Academy of Sciences, 106(44), pp.18627-18632. Graham, H.V., Herrera, F., Jaramillo, C., Wing, S.L. and Freeman, K.H., 2019. Canopy structure in Late Cretaceous and Paleocene forests as reconstructed from carbon isotope analyses of fossil leaves. Geology, 47(10), pp.977-981. Yours, Paul H.
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