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LINK edit( 4,1 MB) Evidence for a large Paleozoic Impact Crater Strewn Field in the Rocky Mountains Thomas Kenkmann, Kent A. Sundell & Douglas Cook NATURE SCIENTIFIC REPORTS | (2018) 8:13246 together with (possibly!!) Bedout (Australia) and the Malvinas (see the post by Oxytropidoceras*) that would make three records for the late Paleozoic * Is the Falkland Islands Basin an Enormous Impact Structure ?
JGSL The Winneshiek biota: exceptionally well-preserved fossils in a Middle Ordovician impact crater Derek E.G. Briggs, Huaibao P. Liu, Robert M. McKay and Brian J. Witzke Journal of the Geological Society, 175, 865-874, 24 September 2018, https://doi.org/10.1144/jgs2018-101 Cannot recommend this one highly enough size:about 8,5 MB Note:the Ames impact straddles the Arbuckle/Simpson Boundary
doushantuo posted a topic in DocumentsABSTRACT,but with pix ocampvajd48th_LPSC_Americabstra2466_Gomez2017_N2_impacrater_astroblpliocenozoicdiscovered_ysical_seismic_evidences_C.pdf 1,5 Mb Age: probably Pliocene