Presencia del género Paleolama P. Gervais (Artiodactyla, Camelidae) en el extremo  meridional del Semiárido de Chile (Los Vilos- IV Región)

M., Patricio López; S., Douglas Jackson; S., Donald Jackson

doi:10.54830/bmnhn.v54.2005.286

Cited by 4 publications

(2 citation statements)

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“…The northern trans-Andean route, in turn, may have been linked to a possible natural dispersal route through the current Chilean territory, following the course of the Loa River whose source is located near the border of Chile with Bolivia at about 4000 m asl. A lumbar vertebra assigned to an undetermined canid of comparable size to the canids studied here (recently observed by Rafael Labarca, see also López et al, 2005), found in Ojos de Opache in the altiplano of northern Chile at 2200 m asl, and about 180 km southeast of Pampa del Tamarugal (López et al, 2005), lend further support to these dispersal routes.…”

Section: Discussionsupporting

confidence: 83%

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First record of cf. Aenocyon dirus (Leidy, 1858) (Carnivora, Canidae), from the Upper Pleistocene of the Atacama Desert, northern Chile

Francisco

Labarca

Prevosti

et al. 2022

Journal of Vertebrate Paleontology

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Fossil records of canids are rare and incomplete in South America. In Chile, all well-identified taxa are part of the "South American Canid Clade" and come from sites located in southern Patagonia. Here, we report the first record for Chile of a taxon of the "Canis clade," assigned to cf. Aenocyon dirus. The fossil remains consist of a partially complete left hind limb, exposed by aeolian deflation, which facilitated its discovery at an isolated setting in Quebrada Maní, named QM38 site, in the southern sector of the Pampa del Tamarugal basin, part of the hyperarid core of the Atacama Desert, northern Chile. Measurements of the fossil are larger than the Protocyon troglodytes, falling in the smaller size range of A. dirus and within the larger range of Theriodictis platensis. Its morphological features compared with bone references of large extinct canids show that the fossil belongs to a small-sized Aenocyon. The remains occur in surface silty clays deposited by an alluvial fan that was active in the Pampa del Tamarugal basin in the Late Pleistocene. A radiocarbon date from bone apatite yielded an age of 14,660 cal years BP, placing it within the first half of the Central Andean Pluvial Event when this basin was wetter, well vegetated, and inhabited by large, medium, and small herbivores. No other large predator records are known from this basin, and our find affords a more complete view of this ecosystem which thrived in the hyperarid core of the Atacama during the Late Pleistocene.

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Section: Discussionsupporting

confidence: 83%

“…are known from the Pampa del Tamarugal (PdT) basin (Casamiquela, 1969(Casamiquela, -1970 and Canidae indet. from the Ojo de Opache (Calama basin) locality (López et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

First record of cf. Aenocyon dirus (Leidy, 1858) (Carnivora, Canidae), from the Upper Pleistocene of the Atacama Desert, northern Chile

Francisco

Labarca

Prevosti

et al. 2022

Journal of Vertebrate Paleontology

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The oldest record of Hemiauchenia Gervais and Ameghino (Mammalia, Cetartiodactyla) in South America: Comments about its paleobiogeographic and stratigraphic implications

Gasparini

Reyes

Francia

et al. 2017

Geobios

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The South American camelids belong to the Tribe Lamini; this Tribe originated in North America and arrived in South America during the ''Great American Biotic Interchange''. The goals of this paper are: (i) to describe the specimen MAM-70, the oldest record of Hemiauchenia Gervais and Ameghino in South America; (ii) to analyze this specimen from a stratigraphic point of view; (iii) to update the distribution and stratigraphic ranges of Lamini in South America; and (iv) to discuss its dispersal pattern to South America. The finding of Hemiauchenia sp. in late Pliocene Chapadmalalan sediments cropping out at the city of Olavarría (Buenos Aires Province, Argentina) represents the oldest record of a Lamini taxon in South America. This finding refutes the hypotheses that consider the genus Lama as the first North American immigrant and those considering that Hemiauchenia and Palaeolama arrived in South America after the closure of the Central America land bridge, during the early-middle Pleistocene. In turn, this specimen corroborates the hypothesis of the dispersal of Lamini from North America to South America, which considered that Palaeolama dispersed after Hemiauchenia, in a later and isolated event. In addition, this finding suggests the possibility that a form closely related to the North American Hemiauchenia macrocephala could have dispersed to South America during the Pliocene, thus originating the South American forms of Hemiauchenia and Lama.

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The oldest record of the Lamini Tribe and Proboscidea order in the southwestern margin of the Andes Mountain range: Late Pleistocene mammalian footprints at the Pelluco fossil forest sanctuary

Medina

Moreno²,

Rojas³

et al. 2022

Journal of South American Earth Sciences

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Presencia del género Paleolama P. Gervais (Artiodactyla, Camelidae) en el extremo meridional del Semiárido de Chile (Los Vilos- IV Región)

Cited by 4 publications

References 0 publications

First record of cf. Aenocyon dirus (Leidy, 1858) (Carnivora, Canidae), from the Upper Pleistocene of the Atacama Desert, northern Chile

First record of cf. Aenocyon dirus (Leidy, 1858) (Carnivora, Canidae), from the Upper Pleistocene of the Atacama Desert, northern Chile

The oldest record of Hemiauchenia Gervais and Ameghino (Mammalia, Cetartiodactyla) in South America: Comments about its paleobiogeographic and stratigraphic implications

The oldest record of the Lamini Tribe and Proboscidea order in the southwestern margin of the Andes Mountain range: Late Pleistocene mammalian footprints at the Pelluco fossil forest sanctuary

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