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    Ammonoids, their biozonation and their palaeobiogeographic relation across the Turonian-Coniacian boundary in northern Coahuila, Mexico by Ifrim, Christina (Author) , Porras Múzquiz, Héctor (Author) , Stinnesbeck, Wolfgang (Author) ,


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    Cretaceous ammonite zonation of the Sergipe Basin, northeastern Brazil by Bengtson, Peter (Author) , Zucon, Maria Helena (Author) , Conceição Santos Sobral, Anderson da (Author) ,


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    Systematic palaeontology of the Perisphinctoidea in the Jurassic/Cretaceous boundary interval at Le Chouet (Drôme, France), and its implications for biostratigraphy by Frau, Camille (Author) , Bulot, Luc G. (Author) , Wimbledon, William A. P. (Author) , Ifrim, Christina (Author) ,


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