Estado actual del conocimiento de los mamíferos fósiles de Chile

Canto, Jhoann; Yanez, J Pena; Rovira, Jaime

doi:10.3989/egeol.39778.055

Cited by 13 publications

(8 citation statements)

References 34 publications

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“…The first Hippocamelus bisulcus is known from the late Pleistocene of Chile, Argentina, and Bolivia (Canto, Yáñez & Rovira, 2010;Merino & Rossi, 2010). Odocoileus lucasi is considered to be the ancestor of Hippocamelus bisulcus.…”

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confidence: 99%

The systematics of the Cervidae: a total evidence approach

Heckeberg

2020

PeerJ

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Systematic relationships of cervids have been controversial for decades. Despite new input from molecular systematics, consensus could only be partially reached. The initial, gross (sub) classification based on morphology and comparative anatomy was mostly supported by molecular data. The rich fossil record of cervids has never been extensively tested in phylogenetic frameworks concerning potential systematic relationships of fossil cervids to extant cervids. The aim of this work was to investigate the systematic relationships of extant and fossil cervids using molecular and morphological characters and make implications about their evolutionary history based on the phylogenetic reconstructions. To achieve these objectives, molecular data were compiled consisting of five nuclear markers and the complete mitochondrial genome of 50 extant and one fossil cervids. Several analyses using different data partitions, taxon sampling, partitioning schemes, and optimality criteria were undertaken. In addition, the most extensive morphological character matrix for such a broad cervid taxon sampling was compiled including 168 cranial and dental characters of 41 extant and 29 fossil cervids. The morphological and molecular data were analysed in a combined approach and other comprehensive phylogenetic reconstructions. The results showed that most Miocene cervids were more closely related to each other than to any other cervids. They were often positioned between the outgroup and all other cervids or as the sister taxon to Muntiacini. Two Miocene cervids were frequently placed within Muntiacini. Plio-and Pleistocene cervids could often be affiliated to Cervini, Odocoileini or Capreolini. The phylogenetic analyses provide new insights into the evolutionary history of cervids. Several fossil cervids could be successfully related to living representatives, confirming previously assumed affiliations based on comparative morphology and introducing new hypotheses. New systematic relationships were observed, some uncertainties persisted and resolving systematics within certain taxa remained challenging.

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confidence: 99%

The systematics of the Cervidae: a total evidence approach

Heckeberg

2020

PeerJ

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“…3b). This locality is also characterized by high abundance of fossil marine mammals (phocids, dugongids, dolphins and whales) 41,[54][55][56] . Furthermore, this locality is known for having a high abundance of the top predator O. megalodon 45 , which could be a potential predator for young GWS.…”

Section: Discussionmentioning

confidence: 99%

“…Pisco Shallow-Upper shelf 52 whales, phocids, dolphins, large and small fishes (chondricthyans and bony fishes) 38,52 No Caldera Shallow-Upper shelf 57 whales, dugongids, dolphins, phocids, large and small fishes (chondricthyans and bony fishes) 41,[54][55][56] No Coquimbo Shallow-Upper shelf 46,47,[49][50][51] whales, large and small fishes (elasmobranchs and bony fishes) 40,42,46,47 Yes Table 2. Criteria used to define a palaeo-nursery area for each locality.…”

Section: Dominated By Juvenilesmentioning

confidence: 99%

First evidence of a palaeo-nursery area of the great white shark

Villafaña

Hernández

Alvarado

et al. 2020

Sci Rep

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Shark nurseries are essential habitats for shark survival. Notwithstanding the rich fossil record of the modern great white shark (Carcharodon carcharias, GWS), its use of nursery areas in the fossil record has never been assessed before. Here, we analysed the fossil record of the GWS from three South American Pliocene localities, assessed body size distributions and applied previously established criteria to identify palaeo-nurseries. We found that juveniles dominate the Coquimbo locality (Chile), whereas subadults and adults characterize Pisco (Peru) and Caldera (Chile), respectively. These results, summed to the paleontological and paleoenvironmental record of the region, suggest that Coquimbo represents the first nursery area for the GWS in the fossil record. Our findings demonstrate that one of the top predators in today's oceans has used nursery areas for millions of years, highlighting their importance as essential habitats for shark survival in deep time.

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“…3a and 2b; Table I (Faure et al 1999, Lessa et al 1998, Cartelle 1999, Mayer 2011, Ghilardi et al 2011, Salles et al 2006, Perini et al 2009, Hoffstetter 1952, Román-Carrión 2012, Seymour 2010, Tonni et al 2009, Hoffstetter 1968, Coltorti et al 2012, Ubilla et al 2004, Ferrero 2008, Cruz et al 2012, Labarca and López 2006, Martín et al 2004, Massone and Prieto 2004, Martín 2008, Canto et al 2010, Rincón 2006, Oschenius 1980; B -A. wingei (Paula-Couto 1960, Guérin 1991, Cartelle 1994, 1998, Trajano and Ferrarezzi 1994, Lessa et al1998, Soibelzon 2002, 2004, Soibelzon et al 2005, Ribeiro et al 2003. (★) -Aurora do Tocantins caves.…”

Section: Family Ursidae Fischer 1817 Genus Arctotherium Bravard 1857mentioning

confidence: 99%

Late Pleistocene carnivores (Carnivora: Mammalia) from a cave sedimentary deposit in northern Brazil

Rodrigues

Avilla

Soibelzon

et al. 2014

An. Acad. Bras. Ciênc.

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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 were present: Panthera onca, Leopardus sp., Galictis cuja, Procyon cancrivorus, Nasua nasua and Arctotherium wingei. Dating by Electron Spinning Resonance indicates that this assemblage was deposited during the Last Glacial Maximum (LGM), at least, 22.000 YBP. The weasel, G. cuja, is currently reported much further south than the record presented here. This may suggest that the environment around the cave was relatively drier during the LGM, with more open vegetation, and more moderate temperatures than the current Brazilian Cerrado.

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Estado actual del conocimiento de los mamíferos fósiles de Chile

Cited by 13 publications

References 34 publications

The systematics of the Cervidae: a total evidence approach

The systematics of the Cervidae: a total evidence approach

First evidence of a palaeo-nursery area of the great white shark

Late Pleistocene carnivores (Carnivora: Mammalia) from a cave sedimentary deposit in northern Brazil

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