Andean Geology 45 (3): 379-398. September, 2018 Andean Geology doi: 10.5027/andgeoV45n3-3122 www.andeangeology.cl Looking for the key to preservation of fossil marine vertebrates in the Pisco Formation of Peru: new insights from a small dolphin skeleton *Anna Gioncada1, Karen Gariboldi1, Alberto Collareta1,2, Claudio Di Celma3, Giulia Bosio4, Elisa Malinverno4, Olivier Lambert5, Jennifer Pike6, Mario Urbina7, Giovanni Bianucci1 1 Dipartimento di Scienze della Terra, Università di Pisa, via Santa Maria 53, 56126 Pisa, Italy.
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[email protected] 2 Dottorato Regionale in Scienze della Terra Pegaso, via Santa Maria 53, 56126 Pisa, Italy.
[email protected] 3 Scuola di Scienze e Tecnologie, Università di Camerino, via Gentile III da Varano, 62032 Camerino, Italy.
[email protected] 4 Dipartimento di Scienze dell’Ambiente e della Terra, Università di Milano-Bicocca, Piazza della Scienza 4, Milan, Italy.
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[email protected] 5 Institut Royal des Sciences Naturelles de Belgique, D.O. Terre et Histoire de la Vie, rue Vautier, 29, B-1000 Brussels, Belgium.
[email protected] 6 School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff, CF10 3YE, UK.
[email protected] 7 Departamento de Paleontologia de Vertebrados, Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos, Avda. Arenales 1256, Lima 14, Perú.
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[email protected] ABSTRACT. The upper Neogene Pisco Formation of Peru is known worldwide as one of the most significant Cenozoic marine vertebrate Konservatt-Lagerstätten, even featuring cetacean specimens that retain remains of soft tissues or stomach contents.