Our understanding of the Cretaceous ammonite succession of Peru is mainly based on the reference work of Benavides Cáceres (1956) that updates the descriptive paleontological papers by Gabb (1877), Sommermeier (1910), and Knechtel et al. (1947), among others. New fossil collections made in the course 1995 and 1999 in northern and central Peru provide the basis for a revision of the Albian ammonite faunas of this country. In contrast to our predecessors, our collections are based on sections that have been sampled bed by bed.

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The present study concentrates on the Early Albian ammonites from the...

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