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New records of Mathoceras Casey (Deshayesitidae, Ammonoidea) from the Aptian (Lower Cretaceous) of Mexico and Hungary: Biostratigraphic and paleobiogeographic implications |
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| Authors: | Ricardo Barragán Ottilia Szives |
| Institution: | a Departamento de Paleontología, Instituto de Geología (UNAM), Ciudad Universitaria, México, D.F. Coyoacán, 04510 Mexico b Department of Paleontology, Hungarian Natural History Museum, Budapest 1431 Pf. 137, Hungary |
| Abstract: | |
| Keywords: | Ammonoidea Mathoceras Cretaceous Paleobiogeography Aptian Mexico Hungary |
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