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The Late Miocene paleogeography of the Amazon Basin and the evolution of the Amazon River system
Abstract On the basis of paleontological content (vertebrates and palynology) and facies analysis from river banks, road cuts, and three wells, we have assigned the uppermost levels of the SolimoesExpand
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Formation of the Isthmus of Panama
Independent evidence from rocks, fossils, and genes converge on a cohesive narrative of isthmus formation in the Pliocene. The formation of the Isthmus of Panama stands as one of the greatest naturalExpand
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Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence
Abstract Fossil content (vertebrate paleofauna and palynology) indicates that the sediments of the Solimoes Formation in Acre (SW Brazilian Amazonia) are continental, having been deposited byExpand
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New platyrrhine monkeys from the Solimões Formation (late Miocene, Acre State, Brazil).
We report here a new fossil primate from the late Miocene of Brazil. The material consists of a lower first molar and a maxilla with P3-4. The fossils were collected in the Solimões Formation at theExpand
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A new Miocene penguin from Patagonia and its phylogenetic relationships
We describe a new medium−sized penguin, Madrynornis mirandus gen. et sp. nov., from the early late Miocene Puerto Madryn Formation, Chubut Province, Argentina. Although it is evident that extant andExpand
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Marine vertebrate assemblages in the southwest Atlantic during the Miocene
Two biogeographical units are generally recognized in the present shelf area of Argentina: the Magellanian and Argentinian Provinces. The two provinces differ in their fossil record. The evolution ofExpand
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The Aquatic Sloth Thalassocnus (Mammalia, Xenarthra) from the Late Miocene of North-Central Chile: Biogeographic and Ecological Implications
JHOANN CANTO,1 RODOLFO SALAS-GISMONDI,*2 MARIO COZZUOL,3 and JOSE YANEZ4; 1Museo Nacional de Historia Natural, Secci6n Paleontologfa, Casilla 587, Santiago, Chile, jcanto@paleontologica.org;Expand
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A new species of tapir from the Amazon
Abstract All known species of extant tapirs are allopatric: 1 in southeastern Asia and 3 in Central and South America. The fossil record for tapirs, however, is much wider in geographical range,Expand
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Patterns of Skull Variation of Brachydelphis (Cetacea, Odontoceti) from the Neogene of the Southeastern Pacific
Abstract Brachydelphis mazeasi Muizon, 1988a, from the Pisco Formation (middle Miocene, Peru), is an odontocete originally known from 2 incomplete skulls and a few associated postcranial elements,Expand
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THE OLDEST SPECIES OF DIDELPHIS (MAMMALIA, MARSUPIALIA, DIDELPHIDAE), FROM THE LATE MIOCENE OF AMAZONIA
Abstract The oldest known species of the genus Didelphis (Mammalia, Marsupialia, Didelphidae) is described here. The holotype and only known specimen comes from the late Miocene deposits of theExpand
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