Mamíferos del Holoceno de la Provincia de Entre Ríos, Argentina

Peralta, Matias Javier; Ferrero, Brenda Soledad

doi:10.4072/rbp.2022.3.06

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…The fossil record of D. avus primarily consists of skulls, jaws and teeth, spanning the Late Pleistocene (Lujanian, 126 000ca 10 000 years BP) until its extinction approximately 500 years BP [5]. Its geographical distribution was extensive, encompassing southern Brazil, Uruguay, northeast Argentina, Pampa and Patagonia [5,[8][9][10][11]. The species inhabited various open areas, including shrub and herbaceous steppes, exhibiting a range of climatic conditions [5].…”

Section: Introductionmentioning

confidence: 99%

Patagonian partnerships: the extinct Dusicyon avus and its interaction with prehistoric human communities

Abbona,

Lebrasseur,

Prevosti

et al. 2024

R. Soc. Open Sci.

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The southern Mendoza province, located in the northern region of Patagonia, was inhabited by hunter-gatherer groups until historic times. Previous archaeological studies have reported canid remains among faunal assemblages, which were assumed to be part of the human diet. However, the taxonomic identification and significance of these canids within human groups have raised questions. In this study, we used ancient DNA analysis, morphological examination and stable isotope analysis (δ 13 C col and δ 15 N) to re-evaluate the taxonomic assignment of a canid discovered at the Late Holocene burial site of Cañada Seca. Previous morphological identifications suggested that it belonged to the genus Lycalopex , but our results conclusively demonstrate that the individual belongs to the extinct fox species Dusicyon avus . This finding expands Dusicyon avus’ known geographical distribution to Patagonia’s northern extremity. Furthermore, statistical predictions based on genetic divergence undermine the hypothesis that hybridization between Canis and Dusicyon , facilitated by the introduction of domestic dogs, played a role in the extinction of Dusicyon species. On the other hand, our findings indicate that a Dusicyon avus individual shared a similar diet and was probably buried alongside humans, suggesting a close relationship between the two species during their lives and deaths.

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Section: Introductionmentioning

confidence: 99%

Patagonian partnerships: the extinct Dusicyon avus and its interaction with prehistoric human communities

Abbona,

Lebrasseur,

Prevosti

et al. 2024

R. Soc. Open Sci.

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Primera Asociación De Vertebrados Del Holoceno Temprano Del Noreste De Argentina (Región Mesopotámica)

Peralta,

Ferrero

2024

PEAPA

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In this contribution, we report and describe a microvertebrate fossil assemblage recovered from a Holocene fluvial unit located in Entre Ríos Province, northeastern Argentina (Mesopotamian Region). The analyzed stratigraphic section is on the left bank of Doll creek (32° 18' 24" S, 60° 25' 41" W), southwestern Entre Ríos Province. The stratigraphic section was divided into three levels and a total of 36 samples were collected. Radiocarbon dating was obtained from gastropod shells from the base of the section, with a range of 9,990±140 BP (Early Holocene). It was possible to record fishes, such as eels and characids, anurans, reptiles, birds, and small-medium size mammals. Most of the identified taxa constitute the first fossil records from the Quaternary of the Mesopotamian Region and even from Argentina. The systematic, biostratigraphic, and taphonomical results show that the environmental conditions in this area at the beginning of the Holocene period were similar to the current ones: a temperate-humid climate with water availability. This contribution is the first study of a microvertebrate fossil assemblage from the Early Holocene from northeastern Argentina (Mesopotamian Region) and represents an important contribution to the knowledge of the Quaternary fossil vertebrates from Argentina.

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Mamíferos del Holoceno de la Provincia de Entre Ríos, Argentina

Cited by 2 publications

References 25 publications

Patagonian partnerships: the extinct Dusicyon avus and its interaction with prehistoric human communities

Patagonian partnerships: the extinct Dusicyon avus and its interaction with prehistoric human communities

Primera Asociación De Vertebrados Del Holoceno Temprano Del Noreste De Argentina (Región Mesopotámica)

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