Results 31 to 40 of about 506 (80)

Divergence Times and the Evolutionary Radiation of New World Monkeys (Platyrrhini, Primates): An Analysis of Fossil and Molecular Data [PDF]

open access: yes, 2013
The estimation of phylogenetic relationships and divergence times among a group of organisms is a fundamental first step toward understanding its biological diversification.
Arístide, Leandro   +3 more
core   +5 more sources

Systematics, Biostratigraphy, and Dental Evolution of the Palaeothentidae, Later Oligocene to Early–Middle Miocene (Deseadan–Santacrucian) Caenolestoid Marsupials of South America

open access: yesJournal of Paleontology, 1993
The family Palaeothentidae contains some of the dentally more specialized of the small-bodied marsupials of South America and was a clade almost equivalent with the Abderitidae in having been the most abundant caenolestoids. They were unquestionably the most diverse, containing two subfamilies, nine genera, and 19 species, with a distribution ranging ...
Bown, Thomas M, Fleagle, John G
openaire   +2 more sources

Functional morphology of the forelimb of Early Miocene caviomorph rodents from Patagonia [PDF]

open access: yes, 2018
Caviomorph rodents (New World Hystricognathi) are represented in the Santa Cruz Formation of Patagonia (Early Miocene, Santacrucian) by four superfamilies.
Ameghino F.   +9 more
core   +1 more source

An Approach to the Biomechanics of the Masticatory Apparatus of Early Miocene (Santacrucian Age) South American Ungulates (Astrapotheria, Litopterna, and Notoungulata): Moment Arm Estimation Based on 3D Landmarks

open access: yesJournal of Mammalian Evolution, 2011
Notoungulates, litopterns, and astrapotheres are among the most representative mammals of the early Miocene Santacrucian Age. They comprise a diversity of biological types and sizes, from small forms, comparable to rodents, to giants with no analogues in modern faunas.
Cassini, Guillermo Hernán   +1 more
openaire   +2 more sources

The southernmost record of a Neuryurini Hoffstetter, 1958 (Mammalia, Xenarthra, Glyptodontidae) [PDF]

open access: yes, 2011
Fil: González Ruiz, Laureano Raúl. Universidad Nacional de La Patagonia; ArgentinaFil: Zurita, Alfredo Eduardo. Centro de Ecologia Aplicada del Litoral (CECOAL). Universidad Nacional del Nordeste; CorrientesFil: Fleagle, John G..
Dozo, María Teresa   +5 more
core  

Paleontology and stratigraphy of the Aisol Formation (Neogene), San Rafael, Mendoza [PDF]

open access: yes, 2012
Fil: Forasiepi, Analía Marta. Departamento de Paleontología. Museo de Historia Natural de San Rafael; ArgentinaFil: Martinelli, Agustín Guillermo. Departamento de Paleontología. Museo de Historia Natural de San Rafael; ArgentinaFil: De la Fuente, Marcelo
Bond, Mariano   +4 more
core  

Review of the ground sloth Nothropus (Mammalia, Xenarthra, Tardigrada) from the Pleistocene of Argentina and Bolivia [PDF]

open access: yes, 2017
The Nothrotheriinae Ameghino (Xenarthra, Pilosa) arerecorded in Argentina from the middle Miocene to the late Pleistocene. In the Quaternary of the current territories of Argentinaand Bolivia it is possible to recognize the existence of the genus ...
Miño Boilini, Ángel Ramón   +2 more
core   +1 more source

Paleoecology of the Paucituberculata and Microbiotheria (Mammalia, Marsupialia) from the late Early Miocene of Patagonia [PDF]

open access: yes, 2012
Fil: Abello, María Alejandra. Laboratorio de Sistemática y Biología Evolutiva (LASBE). Facultad de Ciencias Naturales y Museo. Universidad Nacional de La PlataFil: Ortiz Jaureguizar, Edgardo.
Abello, María Alejandra   +2 more
core  

Revisión de los roedores caviomorfos miocenos del río Santa Cruz (Patagonia Argentina) [PDF]

open access: yes, 2019
Los roedores fósiles provenientes de localidades del Río Santa Cruz (RSC; Formación Santa Cruz, Mioceno Temprano–Medio) se conocen desde fines del siglo 19 y principios del 20, gracias a los trabajos de F. Ameghino y W.B. Scott.
Arnal, Michelle   +2 more
core   +2 more sources

SKULL GEOMETRIC MORPHOMETRICS AND PALEOECOLOGY OF SANTACRUCIAN (LATE EARLY MIOCENE; PATAGONIA) NATIVE UNGULATES (ASTRAPOTHERIA, LITOPTERNA, AND NOTOUNGULATA)

open access: yesAmeghiniana, 2013
Abstract. Three orders of South American extinct native ungulates are recorded from the Santa Cruz Formation along the Atlantic coast of Patagonia: Notoungulata (Adinotherium Ameghino, Nesodon Owen, Interatherium Ameghino, Protypotherium Ameghino, Hegetotherium Ameghino, and Pachyrukhos Ameghino), Litopterna (Theosodon Ameghino, Anisolophus Burmeister,
openaire   +2 more sources

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