Distribution of fossil marine vertebrates in Cerro Colorado, the type locality of the giant raptorial sperm whale Livyatan melvillei (Miocene, Pisco Formation, Peru)
Giovanni Bianucci,Claudio Di Celma,Walter Landini,Klaas Post,Chiara Tinelli,Christian de Muizon,Karen Gariboldi,Elisa Malinverno,Gino Cantalamessa,Anna Gioncada,Alberto Collareta,Rodolfo Salas Gismondi,Rafael M. Varas-Malca,Mario Urbina,Olivier Lambert +14 more
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In this article, hundreds of fossil marine vertebrates cropping out at Cerro Colorado (Pisco Basin, Peru) are identified and reported on a 1:6500 scale geological map and in a joined stratigraphic section.Abstract:
Hundreds of fossil marine vertebrates cropping out at Cerro Colorado (Pisco Basin, Peru) are identified and reported on a 1:6500 scale geological map and in a joined stratigraphic section. All the fossils are from the lower strata of the Pisco Formation, dated in this area to the late middle or early late Miocene. They are particularly concentrated (88%) in the stratigraphic interval from 40 to 75 m above the unconformity with the underlying Chilcatay Formation. The impressive fossil assemblage includes more than 300 specimens preserved as bone elements belonging mostly to cetaceans (81%), represented by mysticetes (cetotheriids and balaenopteroids) and odontocetes (kentriodontid-like delphinidans, pontoporiids, ziphiids, and physeteroids, including the giant raptorial sperm whale Livyatan melvillei). Seals, crocodiles, sea turtles, seabirds, bony fish, and sharks are also reported. Isolated large teeth of Carcharocles and Cosmopolitodus are common throughout the investigated stratigraphical interval, whe...read more
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Macroraptorial sperm whales (Cetacea, Odontoceti, Physeteroidea) from the Miocene of Peru
TL;DR: A phylogenetic analysis based on 53 characters and 21 physeteroid species confirms the monophyly of Acrophyseter and groups this genus with the larger, middle to late Miocene macroraptorial stem physeteroids Brygmophyseter and Zygophyseter.
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No deep diving: evidence of predation on epipelagic fish for a stem beaked whale from the Late Miocene of Peru.
Olivier Lambert,Alberto Collareta,Walter Landini,Klaas Post,Benjamin Ramassamy,Claudio Di Celma,Mario Urbina,Giovanni Bianucci +7 more
TL;DR: A ziphiid–fish assemblage from the Late Miocene of Peru is reported, interpreted as the first direct evidence of a predator–prey relationship between a Ziphiid and epipelagic fish, and supports the hypothesis that only more derived ziphiids were regular deep divers and that the extinction of epipelagos forms may coincide with the radiation of true dolphins.
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Piscivory in a Miocene Cetotheriidae of Peru: first record of fossilized stomach content for an extinct baleen-bearing whale.
Alberto Collareta,Walter Landini,Olivier Lambert,Klaas Post,Chiara Tinelli,Claudio Di Celma,Daniele Panetta,Maria Tripodi,Piero Salvadori,Davide Caramella,Damiano Marchi,Damiano Marchi,Mario Urbina,Giovanni Bianucci +13 more
TL;DR: This fossil record corresponds to one of the geologically oldest records of Sardinops worldwide, occurring near the Tortonian peak of oceanic primary productivity and cooling phase, and evokes a link between the rise of Cetotheriidae; the setup of modern coastal upwelling systems; and the radiation of epipelagic, small-sized, schooling clupeiform fish in such highly productive environments.
Journal ArticleDOI
Fossil marine vertebrates of Cerro Los Quesos: Distribution of cetaceans, seals, crocodiles, seabirds, sharks, and bony fish in a late Miocene locality of the Pisco Basin, Peru
Giovanni Bianucci,Claudio Di Celma,Alberto Collareta,Walter Landini,Klaas Post,Chiara Tinelli,Christian de Muizon,Giulia Bosio,Karen Gariboldi,Anna Gioncada,Elisa Malinverno,Gino Cantalamessa,Alí Altamirano-Sierra,Rodolfo Salas-Gismondi,Mario Urbina,Olivier Lambert +15 more
TL;DR: One hundred and ninety-two fossil marine vertebrate specimens, preserved as bone elements cropping out at Cerro Los Quesos (Pisco Basin, Peru), are identified and reported on a 1:4,000 scale geological map and in the corresponding stratigraphic section.
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Did the giant extinct shark Carcharocles megalodon target small prey? Bite marks on marine mammal remains from the late Miocene of Peru
Alberto Collareta,Olivier Lambert,Walter Landini,Claudio Di Celma,Elisa Malinverno,Rafael M. Varas-Malca,Mario Urbina,Giovanni Bianucci +7 more
TL;DR: Bite marks incising fossil mammal bones collected from upper Miocene deposits of the Pisco Formation exposed at Aguada de Lomas (southern Peru) significantly expand the still scarce record of bite marks for C. megalodon and are interpreted as an apex predator whose trophic spectrum was focused on relatively small-sized prey.
References
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The giant bite of a new raptorial sperm whale from the Miocene epoch of Peru
Olivier Lambert,Giovanni Bianucci,Klaas Post,Christian de Muizon,Rodolfo Salas-Gismondi,Mario Urbina,Jelle W.F. Reumer +6 more
TL;DR: It is proposed that Leviathan fed mostly on high-energy content medium-size baleen whales, together with the contemporaneous giant shark Carcharocles megalodon, which had a profound impact on the structuring of Miocene marine communities.
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Cenozoic marine sedimentation in the Sechura and Pisco basins, Peru
TL;DR: The authors examined the Cenozoic stratigraphy of the onshore portions of the Sechura Basin (5-7°S) and Pisco Basin (13-16°S), two shelf basins which have accumulated marine sediment discontinuously since the mid to late Eocene.