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Kauri trees mark magnetic flip and environmental crisis 42,000 years ago
Oxytropidoceras posted a topic in Fossil News
Ancient kauri trees capture last collapse of Earth’s magnetic field By Paul Voosen, Science, February 18, 2021 Ancient Trees Show When The Earth's Magnetic Field Last Flipped Out By Nell Greenfield-Boyce, Short Wave, NPR, February 18, 2021 Buried treasure - subfossil swamp kauri By Kate Evans, New Zealand Geographic Voosen, P., 2021, Kauri trees mark magnetic flip 42,000 years ago Science. vol. 371, Issue 6531, pp. 766 DOI: 10.1126/science.371.6531.766 The paper is: Cooper, A., Turney, C.S.M., Palmer, J. and others, 2021, Global environmental crisis 42,000 years ago Science. Vol. 371, Issue 6531, pp. 811-818 Related paper Staff, R.A., Hardiman, M., Ramsey, C.B., Adolphi, F., Hare, V.J., Koutsodendris, A. and Pross, J., 2019. Reconciling the Greenland ice-core and radiocarbon timescales through the Laschamp geomagnetic excursion. Earth and Planetary Science Letters, 520, pp.1-9. Yours, Paul H.-
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One of the common coniferous plant fossils found at the Talbragar site is Agathis jurassica. The genus Agathis is extant, representing a small group of some 21 species mainly distributed in Australasia, belonging to the same family (Araucariaceae) as Wollemia. Together with a fishtail. Key references: White. M.E., 1981a. Fish beds reveal lush fossil forest. Australian Natural History 20 (7), 227-230. White. M.E., 1981b. Revision of the Talbragar Fish Bed Flora (Jurassic) of New South Wales. Records of the Australian Museum 33 (15), 695-721. Woodward, A.S., David, T.W.E. and Pittman, E.F., 1895. The fossil fishes of the Talbragar Beds (Jurassic?), with a note on their stratigraphical relations. Memoir Geological Survey of New South Wales, Palaeontology 9, 1-27. Frese M, Gloy G, Oberprieler RG, Gore DB (2017) Imaging of Jurassic fossils from the Talbragar Fish Bed using fluorescence, photoluminescence, and elemental and mineralogical mapping. PLoS ONE 12(6): e0179029. https://doi.org/10.1371/journal. pone.0179029