Alvarez, W., L.W. Alvarez, F. Asaro, and H.V. MichelThe end of the Cretaceous: Sharp boundary or gradual transition? Science, 223, Bohor, B.F., E.E. Foord, P.J. Modreski, and D.M. TriplehornMin

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Date: 2011-05-06 22:21:46 Nautiloids James Ross Island group Lopez de Bertodano Formation Seymour Island Cretaceous–Tertiary extinction event Nautilus belauensis Cretaceous Nautilus Aturiidae Geologic time scale Phanerozoic Geology		Alvarez, W., L.W. Alvarez, F. Asaro, and H.V. MichelThe end of the Cretaceous: Sharp boundary or gradual transition? Science, 223, Bohor, B.F., E.E. Foord, P.J. Modreski, and D.M. TriplehornMin Add to Reading List Source URL: s3.amazonaws.com Download Document from Source Website File Size: 2,60 MB Share Document on Facebook

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