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Готові списки джерел за темами / Arctotherium

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Добірка наукової літератури з теми "Arctotherium"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 29 січня 2023

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Статті в журналах з теми "Arctotherium"

1

Mitchell, Kieren J., Sarah C. Bray, Pere Bover, et al. "Ancient mitochondrial DNA reveals convergent evolution of giant short-faced bears (Tremarctinae) in North and South America." Biology Letters 12, no. 4 (2016): 20160062. http://dx.doi.org/10.1098/rsbl.2016.0062.

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The Tremarctinae are a subfamily of bears endemic to the New World, including two of the largest terrestrial mammalian carnivores that have ever lived: the giant, short-faced bears Arctodus simus from North America and Arctotherium angustidens from South America (greater than or equal to 1000 kg). Arctotherium angustidens became extinct during the Early Pleistocene, whereas Arctodus simus went extinct at the very end of the Pleistocene. The only living tremarctine is the spectacled bear ( Tremarctos ornatus ), a largely herbivorous bear that is today only found in South America. The relationsh

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2

Soibelzon, Leopoldo H., and Blaine W. Schubert. "The largest known bear, Arctotherium angustidens, from the early Pleistocene Pampean region of Argentina: with a discussion of size and diet trends in bears." Journal of Paleontology 85, no. 1 (2011): 69–75. http://dx.doi.org/10.1666/10-037.1.

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The South American giant short-faced bear (Arctotherium angustidens Gervais and Ameghino, 1880) is one of five described Arctotherium species endemic to South America and it is known for being the earliest, largest, and most carnivorous member of the genus. Here we report an extraordinarily large A. angustidens individual exhumed from Ensenadan sediments (early to middle Pleistocene) at Buenos Aires Province, Argentina. Based on overall size, degree of epiphyseal fusion, and pathologies, this bear was an old-aged male that sustained serious injuries during life. Body mass of the bear is estima

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3

Soibelzon, Leopoldo H., Lucas H. Pomi, Eduardo P. Tonni, Sergio Rodriguez, and Alejandro Dondas. "First report of a South American short-faced bears' den (Arctotherium angustidens): palaeobiological and palaeoecological implications." Alcheringa: An Australasian Journal of Palaeontology 33, no. 3 (2009): 211–22. http://dx.doi.org/10.1080/03115510902844418.

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4

RODRIGUES, SHIRLLEY, LEONARDO S. AVILLA, LEOPOLDO H. SOIBELZON, and CAMILA BERNARDES. "Late Pleistocene carnivores (Carnivora: Mammalia) from a cave sedimentary deposit in northern Brazil." Anais da Academia Brasileira de Ciências 86, no. 4 (2014): 1641–55. http://dx.doi.org/10.1590/0001-3765201420140314.

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The Brazilian Quaternary terrestrial Carnivora are represented by the following families: Canidae, Felidae, Ursidae, Procyonidae Mephitidae and Mustelidae. Their recent evolutionary history in South America is associated with the uplift of the Panamanian Isthmus, and which enabled the Great American Biotic Interchange (GABI). Here we present new fossil records of Carnivora found in a cave in Aurora do Tocantins, Tocantins, northern Brazil. A stratigraphical controlled collection in the sedimentary deposit of the studied cave revealed a fossiliferous level where the following Carnivora taxa wer

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5

Manzuetti, Aldo, Washington Jones, Martín Ubilla, and Daniel Perea. "Nuevo registro de Puma concolor Linnaeus, 1771 (Carnivora, Felidae) para el Pleistoceno Tardío de Uruguay y su importancia paleoecológica." Andean Geology 49, no. 3 (2022): 445. http://dx.doi.org/10.5027/andgeov49n3-3437.

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Felidae entered South America from North America during the Ensenadan Stage/Age (Early to Middle Pleistocene). For Uruguay their fossil record is scarce but informative, although mostly correspond to large felids (Smilodon, Panthera onca). In this work describes fossil remain of a skull and a mandible assigned, based on morphology and statistical analysis, to Puma concolor. These materials were unearthed from Late Pleistocene sediments (Sopas Formation) from northern Uruguay. Based on these remains some paleobiological and paleoecological aspects are discussed. This specimen had a body m

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6

Arnaudo, Maria Eugenia, Leopoldo Hector Soibelzon, Paula Bona, and Blaine Schubert. "First Description of the Auditory Region of a Tremarctinae (Ursidae, Mammalia) Bear: The Case of Arctotherium angustidens." Journal of Mammalian Evolution 21, no. 3 (2013): 321–30. http://dx.doi.org/10.1007/s10914-013-9246-1.

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7

Soibelzon, Leopoldo H., Gustavo A. Grinspan, Hervé Bocherens, et al. "South American giant short-faced bear (Arctotherium angustidens) diet: evidence from pathology, morphology, stable isotopes, and biomechanics." Journal of Paleontology 88, no. 6 (2014): 1240–50. http://dx.doi.org/10.1666/13-143.

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Анотація:

Arctotherium angustidensGervais and Ameghino, 1880 (the South American giant short-faced bear) is known for being the earliest (Ensenadan Age, early to middle Pleistocene) and largest (body mass over 1 ton) of five describedArctotheriumspecies endemic to South America. Here we assess the diet of this bear from multiple proxies: morphology, biomechanics, dental pathology, stable isotopes and a previous study using geometric morphometric methodology. Results favor the idea of animal matter consumption, probably from large vertebrates in addition to vegetable matter consumption. Most probably, ac

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8

Schubert, Blaine W., James C. Chatters, Joaquin Arroyo-Cabrales, et al. "Yucatán carnivorans shed light on the Great American Biotic Interchange." Biology Letters 15, no. 5 (2019): 20190148. http://dx.doi.org/10.1098/rsbl.2019.0148.

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The Great American Biotic Interchange is considered to be a punctuated process, primarily occurring during four major pulses that began approximately 2.5 Ma. Central America and southeastern Mexico have a poor fossil record of this dynamic faunal history due to tropical climates. Exploration of submerged caves in the Yucatán, particularly the natural trap Hoyo Negro, is exposing a rich and remarkably well-preserved late Pleistocene fauna. Radiometric dates on megafauna range from approximately 38 400–12 850 cal BP, and extinct species include the ursid Arctotherium wingei and canid Protocyon t

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9

López Mendoza, P., F. Mena Larraín, and E. Bostelmann. "Presence of Arctotherium (Carnivora, Ursidae, Tremarctinae) in a pre-cultural level of Baño Nuevo-1 cave (Central Patagonia, Chile)." Estudios Geológicos 71, no. 2 (2015): e041. http://dx.doi.org/10.3989/egeol.42011.357.

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10

MANZUETTI, Aldo, Washington JONES, Daniel PEREA, Martín UBILLA, Andrés RINDERKNECHT, and Pablo TORIÑO. "The state of knowledge of the jaguar Panthera onca (Linnaeus, 1758) (Carnivora, Felidae) during the Quaternary in Uruguay." Comptes Rendus Palevol, no. 31 (September 8, 2022). http://dx.doi.org/10.5852/cr-palevol2022v21a31.

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Анотація:

Felids are the top predators in the environments they inhabit. They entered South America at the Pliocene-Pleistocene boundary, but their fossil record in Uruguay, although informative, is scarce. In the present contribution, three new materials (two hemimandibles and an isolated first lower molar) assigned to Panthera onca (Linnaeus, 1758) are described. This material came from Quaternary sediments (Sopas, Dolores, and Libertad Formations) from several localities in Uruguay. Based on this material, different aspects of the paleobiology and paleoecology of jaguars are discussed. Remains of the

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Дисертації з теми "Arctotherium"

1

Salis, Alexander Theodore. "Investigating faunal responses to climate and environmental change using ancient DNA from ursids." Thesis, 2021. https://hdl.handle.net/2440/132845.

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Анотація:

The Late Quaternary Period (the past ~1.0 million years) is characterised by cyclical growth and retraction of glaciers and polar ice caps driven by periods of cooler and warmer global temperatures. Ancient DNA has emerged as a key tool for unravelling the impacts of climate and environmental change as it enables detection of population and species level changes that would otherwise be undetectable. Ursids (bears) have shown potential as a model taxon for investigating faunal responses to climate and environmental change during the Late Quaternary, especially brown bears (Ursus arctos),

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