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      A vertebrate assemblage of Las Curtiembres Formation (Upper Cretaceous) of northwestern Argentina Translated title: Una asociación de vertebrados de la Formación Las Curtiembres (Cretácico Superior) del Noroeste de la Argentina

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          Abstract

          We describe an association of fossil vertebrates from the Morales Member of the Las Curtiembres Formation (Campanian) near Puente Morales, Salta Province, NW Argentina. The fossils include teleostean fishes, pipid frogs, pleurodiran turtles, mesoeucrocodylians, non-avian theropod dinosaurs, and enantiornithine birds. The vertebrate record is dominated by freshwater taxa. With the exception of pipid frogs, all taxa here described constitute new records for this sedimentary unit. Among them, the turtles are reported for the first time in the Cretaceous of northwestern Argentina (Salta Group). Additionally, the recently published small enantiornithine Intiornis inexpectatus enlarges the diversity of cretaceous birds from South America. Despite the fragmentary nature of the specimens, the information provided by this Late Cretaceous assemblage sheds new light on the composition of the continental vertebrate fauna in a paleontologically poorly known region of South America.

          Translated abstract

          Aquí describimos una asociación de fósiles de vertebrados proveniente del Miembro Morales de la Formación Las Curtiembres (Campaniano) exhumada en la localidad de Puente Morales, provincia de Salta, Argentina. Esta asociación se encuentra conformada por peces teleósteos, anuros pipidos, tortugas pleurodiras, mesoeucrocodilidos, dinosaurios terópodos no avianos y aves Enantiornithes. Este registro de vertebrados se encuentra dominado por taxa de agua dulce. Con la excepción de los anuros pipidos, todos los demás taxa aquí descriptos constituyen nuevos registros para esta unidad sedimentaria. Entre ellos, el registro de tortugas resulta ser el primero para el Grupo Salta. Adicionalmente, el Enantiornithes Intiornis inexpectatus amplía la diversidad de aves cretácicas de América del Sur. Más allá de la naturaleza fragmentaria de algunos de los especímenes, la información proporcionada por esta asociación del Cretácico Superior aporta novedosa información acerca de la composición de la poco conocida fauna de vertebrados continentales de esta región de América del Sur.

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          Fishes of the World

          <p>"Of all the literature I use while preparing field guides for the Food and Agriculture Organization of the United Nations, Nelson's Fishes of the World is, by far, the one I refer to most often. [This] book is a standard reference . . . I continue to use it extensively in the ichthyology courses I teach, particularly in laboratory sessions."<br> —Kent E. Carpenter Old Dominion University</p> <p>"Fishes of the World is a unique and essential resource for anyone seriously interested in the diversity and evolution of fishes. The family accounts provide quick summaries of current knowledge on all groups of living fishes and many key fossil taxa. It is a required work for every student in my laboratory."<br> —William E. Bemis Kingsbury Director of Shoals Marine Laboratory, Cornell University</p> <p>"Only classics are known by the single name of their author, and certainly [Nelson's book] has for four editions been such a book for all those who seek an accessible, up-to-date, readable reference on fish classification. Once again, Nelson presents a balanced view of the sometimes tumultuous, but ever-exciting, study of the phylogenetic relationships and classification of fishes. In doing so, Nelson makes an excellent case for organismal biology, highlighting the many and varied morphological characters we use to diagnose fish taxa and differentiate among the 515 families of living species."<br> —Lynne R. Parenti Curator of Fishes and Research Scientist, National Museum of Natural History, Smithsonian Institution</p> <p>Fishes of the World, Fourth Edition is the updated edition of a true classic in the field. A unique presentation of a modern, cladistically based classification of all the major living and fossil fish groups, this indispensable reference helps scientists and others identify and classify specimens, make familial connections, understand the evolution of fishes, and springboard into further research.</p> <p>The taxonomy of fishes presented includes the anatomical characteristics, distribution, common and scientific names, and phylogenetic relationships for all 515 families of living fishes. Packed with representative species drawings and information on phylogentic relationships, this informative Fourth Edition features:</p> <ul> <li>Both fossil and extant species</li> <li>More than 500 illustrations</li> <li>Fully vetted scientific and common names</li> <li>An extensive bibliography</li> </ul>
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            The giant crocodyliform Sarcosuchus from the Cretaceous of Africa.

            New fossils of the giant African crocodyliform Sarcosuchus imperator clarify its skeletal anatomy, growth patterns, size, longevity, and phylogenetic position. The skull has an expansive narial bulla and elongate jaws studded with stout, smooth crowns that do not interlock. The jaw form suggests a generalized diet of large vertebrates, including fish and dinosaurs. S. imperator is estimated to have grown to a maximum body length of at least 11 to 12 meters and body weight of about 8 metric tons over a life-span of 50 to 60 years. Unlike its closest relatives, which lived as specialized piscivores in marginal marine habitats, S. imperator thrived in fluvial environments.
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              New subclass of birds from the Cretaceous of South America

              C A Walker (1981)
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                Author and article information

                Journal
                rmacn
                Revista del Museo Argentino de Ciencias Naturales
                Rev. Mus. Argent. Cienc. Nat.
                Museo Argentino de Ciencias Naturales Bernardino Rivadavia e Instituto Nacional de Investigación de las Ciencias Naturales (Ciudad Autónoma de Buenos Aires, , Argentina )
                1853-0400
                December 2011
                : 13
                : 2
                : 195-204
                Affiliations
                [05] Buenos Aires orgnameMuseo Argentino de Ciencias Naturales B. Rivadavia orgdiv1División Icnología Argentina
                [03] Buenos Aires orgnameUniversidad de Maimónides orgdiv1CEBBAD orgdiv2Departamento de Ciencias Naturales y Antropología Argentina
                [01] Buenos Aires orgnameMuseo Argentino de Ciencias Naturales B. Rivadavia orgdiv1Laboratorio de Anatomía Comparada y Evolución de los Vertebrados Argentina
                [07] La Plata orgnameMuseo de La Plata orgdiv1Departamento Paleontología de Vertebrados Argentina
                [02] orgnameFundación de Historia Natural Félix de Azara
                [04] San Rafael orgnameMuseo Municipal de Historia Natural de San Rafael orgdiv1Departamento de Paleontología orgdiv2Departamento de Ciencias Naturales y Antropología Argentina
                [06] Buenos Aires orgnameMuseo Argentino de Ciencias Naturales B. Rivadavia orgdiv1Sección Paleontología de Vertebrados Argentina
                Article
                S1853-04002011000200009 S1853-0400(11)01300200009
                10.22179/REVMACN.13.222
                4bdd8824-1edb-465b-bc0f-1301cf33bfe9

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 17 August 2010
                : 09 November 2011
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 71, Pages: 10
                Product

                SciELO Argentina


                Upper cretaceous,Vertebrates,Las curtiembres Formation,Argentina,Vertebrados,Formación Las curtiembres,Cretácico Superior

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