Stratigraphy, geochronology, and paleoenvironments of Miocene - Pliocene boundary of San Fernando, Belén (Catamarca, northwest of Argentina)

Bonini, Ricardo Adolfo; Georgieff, Sergio Miguel; Candela, Adriana Magdalena

doi:10.1016/j.jsames.2017.08.020

Cited by 26 publications

(15 citation statements)

References 19 publications

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“…Environmental studies of the sedimentary units bearing Cyonasua remains agree with these global events (e.g., studies on Fm. Andalhuala, Bonini, Georgieff, & Candela, 2017;Bossi & Muruaga, 2009;Fm. Chapadmalal, Erra, Osterrieth, Morel, & Fernández-Honaine, 2010).…”

Section: Paleoecological Remarksmentioning

confidence: 99%

Comparative osteology and functional morphology of the forelimb ofCyonasua(Mammalia, Procyonidae), the first South American carnivoran

Tarquini

Morgan

Toledo

et al. 2019

Journal of Morphology

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Extant procyonids only inhabit the Americas and are represented by six genera (Procyon, Nasua, Nasuella, Bassaricyon, Potos, and Bassariscus); all of them, except Bassariscus, are present in South America. The first records correspond to the early Miocene in North America (NA) and the late Miocene in South America (SA). Cyonasua was the first carnivoran to enter SA from NA, before the Great American Biotic Interchange, and went extinct in the early middle Pleistocene. This extinct procyonid is recorded in several localities of Argentina, and also in Venezuela. Paleobiological studies of procyonids are interesting from evolutionary and biogeographical viewpoints. In this study, the pectoral girdle and forelimb of 10 specimens of Cyonasua are described and compared with extant South American procyonids using a qualitative approach. Additionally, four functional morphology indexes were calculated for them and compared with an ecologically diverse sample of living carnivorans. Results indicate that Cyonasua most resembles Nasua nasua and Procyon cancrivorus, even though the extinct procyonid possessed peculiar features. Cyonasua had robust and relatively short forelimb bones, with strong stabilized joints, and movements associated with the sagittal plane, which suggest a tendency toward terrestrial habits, related to their ability to resist relatively high bending and shearing stresses. However, some features indicate a freedom in their range of movements, with moderate supination ability, compatible with climbing. When combined with previous analyses of dietary habits and estimated body mass, the morphology of Cyonasua would be well suited for digging and prey manipulation, allowing them to prey on small and relatively large‐sized vertebrates, as well as to avoid some of the predators that were dominant in the Cenozoic of South America.

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Section: Paleoecological Remarksmentioning

confidence: 99%

Comparative osteology and functional morphology of the forelimb ofCyonasua(Mammalia, Procyonidae), the first South American carnivoran

Tarquini

Morgan

Toledo

et al. 2019

Journal of Morphology

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“…Coarse conglomerates of the Corral Quemado Fm. and the "Punaschotter" were deposited during the Pliocene and the Quaternary (Bonini et al, 2017;Bossi et al, 2001;Bossi & Muruaga, 2009). A tuff collected in the base of the Corral Quemado Fm.…”

Section: Geological Setting Of the Cuevas Rangementioning

confidence: 99%

“…The Eocene and Oligocene record of the Sierras Pampeanas evolution is scarce; whereas foreland basin depocenters associated with the early stages of the Andean orogeny have been reported in this province (Bossi & Muruaga, ; Fosdick et al, ). During the Miocene, several fine‐grained lacustrine and fluvial successions were deposited and subsequently overlain by coarse sediments related to the later phases of the Andean orogeny (Bonini et al, ; Bossi et al, ; Dávila & Astini, ; Strecker et al, ).…”

Section: Geological Backgroundmentioning

confidence: 99%

Using a Paleosurface to Constrain Low‐Temperature Thermochronological Data: Tectonic Evolution of the Cuevas Range, Central Andes

et al. 2019

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Dispersion of low‐temperature thermochronologic data from nine samples collected on a deformed paleosurface preserved on the Cuevas range (Central Andes) can be exploited to unravel complex thermal histories. The nine samples yielded data that have both intersample and intrasample dispersions; the data set includes apatite fission‐track ages (180–110 Ma), mean track lengths (11–13 μm), apatite helium (10–250 Ma), and zircon helium ages (180–348 Ma). We ran inverse thermal history models for each sample that reveal spatial variations of the Miocene reheating along the paleosurface. Next, we ran a multiple‐sample joint model to infer a common form for thermal history for all samples. Our results suggest that initial exhumation during the Famatinian orogeny was followed by a residence between ~2.5 and 7.0 km depth during the Paleozoic and the Triassic. The onset of Mesozoic rifting was responsible for an increase of the geothermal gradient and extensive horst exhumation, which brought the basement of the Cuevas range close to the surface (~1–2 km) in the Late Jurassic. Between the Late Cretaceous and the Paleocene, the combination of low relief, a humid climate, and low erosion rates (0.006–0.030 km/Ma) facilitated the development of the Cuevas paleosurface. During the Miocene, this paleosurface experienced differential reheating with a high geothermal gradient (>25 °C/km) due to the sedimentary cover and local magmatic heat sources. During the Andean orogeny, in the Pliocene, the Cuevas paleosurface was deformed, exhumed, and uplifted.

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“…In relation with this, it is of particular relevance the record of the multiple taxa coming from the same fossiliferous level. In this way, it allow assessing, for first time, the composition and structure of the late Miocene communities of Southern Jujuy, lesser known in comparison to Neogene Central and Northern units of Jujuy (i.e., Quebrada de Humahuaca and Puna;Castellanos, 1950;Reguero et al, 2007;Abello et al, 2015;Bonini et al, 2017;Zurita et al, 2017;Quiñones et al, 2018). The fossiliferous locality is particularly relevant because it contains a tuff level that gives it an absolute age for the paleocommunity and preserves several small to medium-sized xenarthran and rodent taxa, allowing paleoecological and paleoenvironmental inferences.…”

Section: Manuscript a C mentioning

confidence: 99%

Los Alisos, a new fossiliferous locality for Guanaco Formation (late Miocene) in Jujuy (Argentina), and a first approach of its paleoecological and biochronology implications

Ercoli

Álvarez

Santamans

et al. 2019

Journal of South American Earth Sciences

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Very scarce information is available about the extinct Neogene communities of the Subandean valleys of Jujuy province, Northwestern Argentina. A new vertebrate fossiliferous locality (Los Alisos), and the first mammalian assemblage from Guanaco Formation, is described. The taxa recorded include mainly caviomorph rodents (Hystricognathi) represented by Orthomyctera sp., Lagostomus sp., and an Octodontoidea and cingulates (Xenarthra) represented by the armadillos aff. Stenotatus, Dasypus sp. nov., two Euphractinae, and a Glyptodontidae. A single remain of a turtle (Testudines) is also described. The composition of the faunistic record has similitude with Andalhuala, Chiquimil and Salicas formations, but some taxa differ from all other late Miocene Northwestern Argentina localities. The most outstanding feature of Los Alisos paleocommunity is the presence of Dasypus, which confirms the existence of the genus in times as old as the late Miocene. The presence of a tuff with known age (5.9-6.4 Ma) immediately below to the fossiliferous level gives a lower temporal constraint for the association, and this absolute age as well as the biochrons of the identified taxa are compatible with an Huayquerian stage. The integrative analysis of the mammals of Los Alisos allowed preliminary paleoecological and paleoenvironmental inferences for Guanaco Formation, indicating a landscape composed by open areas, whether extensive or arranged in patches, including grasslands, under warm and seasonal climatic conditions.

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Stratigraphy, geochronology, and paleoenvironments of Miocene - Pliocene boundary of San Fernando, Belén (Catamarca, northwest of Argentina)

Cited by 26 publications

References 19 publications

Comparative osteology and functional morphology of the forelimb ofCyonasua(Mammalia, Procyonidae), the first South American carnivoran

Comparative osteology and functional morphology of the forelimb ofCyonasua(Mammalia, Procyonidae), the first South American carnivoran

Using a Paleosurface to Constrain Low‐Temperature Thermochronological Data: Tectonic Evolution of the Cuevas Range, Central Andes

Los Alisos, a new fossiliferous locality for Guanaco Formation (late Miocene) in Jujuy (Argentina), and a first approach of its paleoecological and biochronology implications

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