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Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: a relaxed molecular clock study within xenarthrans
BackgroundComparative genomic data among organisms allow the reconstruction of their phylogenies and evolutionary time scales. Molecular timings have been recently used to suggest that environmentalExpand
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BODY MASS ESTIMATIONS IN LUJANIAN (LATE PLEISTOCENE-EARLY HOLOCENE OF SOUTH AMERICA) MAMMAL MEGAFAUNA
In this paper a data base is initiated, with the body mass estimations for a number of xenarthran and epitherian species of the Lujanian Land Mammal Age (late Pleis- tocene - early Holocene of SouthExpand
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Limb proportions and adaptations in caviomorph rodents (Rodentia: Caviomorpha)
Caviomorph rodents (Rodentia: Caviomorpha) are an anatomically variable group with diverse ecological and morphological types, including cursorial, digging, fossorial and swimming forms. TheirExpand
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Structure and function in armadillo limbs (Mammalia: Xenarthra: Dasypodidae)
Armadillos are a very diverse group ranging from non-fossorial Tolypeutini through to the powerful diggers like the giant armadillo Priodontes maximus to the totally subterranean Chlamyphorini. AExpand
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Hypsodonty in Pleistocene ground sloths
Although living sloths (Xenarthra, Tardigrada) are represented by only two genera, their fossil relatives form a large and diverse group. The evolution of hypsodonty, the crown height of a tooth, hasExpand
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Ulnar dimensions and fossoriality in armadillos
Ulnar dimensions were measured in 14 species of armadillos (Xenarthra: Dasypodidae). An index of fossorial ability (IFA) was constructed, relating the length of the olecranon process to the remainingExpand
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U-Pb geochronology of the Santa Cruz Formation (early Miocene) at the Río Bote and Río Santa Cruz (southernmost Patagonia, Argentina): Implications for the correlation of fossil vertebrate localities
Abstract The early Miocene Santa Cruz Formation (SCF) in southern Patagonia hosts the Santacrucian South American Land Mammal Age (SALMA), whose age is known mainly from exposures along the AtlanticExpand
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LIMB BONE PROPORTIONS, STRENGTH AND DIGGING IN SOME LUJANIAN (LATE PLEISTOCENE-EARLY HOLOCENE) MYLODONTID GROUND SLOTHS (MAMMALIA, XENARTHRA)
Abstract The mylodontid ground sloths (Xenarthra, Tardigrada) are among the most intriguing components of the Lujanian (Late Pleistocene-Early Holocene) fauna of the Pampean region in South America.Expand
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Muzzle of South American Pleistocene ground sloths (Xenarthra, Tardigrada)
Sloths are among the most characteristic elements of the Cainozoic of South America and are represented, during the Pleistocene, by approximately nine genera of gigantic ground sloths (MegatheriidaeExpand
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Distribution of extant xenarthrans (Mammalia: Xenarthra) in Argentina using species distribution models
Abstract The xenarthrans are the only group of mammals that originated in South America; there are 31 living species: six sloths, four anteaters, and 21 armadillos. In Argentina, 18 species ofExpand
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