El Registro De Sauropodomorpha (Dinosauria) De La Argentina

Otero, Alejandro González; Salgado, Leonardo

doi:10.5710/peapa.04.06.2015.100

Cited by 10 publications

(6 citation statements)

References 37 publications

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“…During the Late Cretaceous, they underwent an extensive evolutionary radiation worldwide. Most of their record in South America is restricted to Argentine Patagonia (e.g., Neuquén, Golfo San Jorge and Austral basins) and the Bauru Basin of SW Brazil 7 – 9 (Fig. 1a ).…”

Section: Introductionmentioning

confidence: 99%

Two Late Cretaceous sauropods reveal titanosaurian dispersal across South America

et al. 2020

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South American titanosaurians have been central to the study of the evolution of Cretaceous sauropod dinosaurs. Despite their remarkable diversity, the fragmentary condition of several taxa and the scarcity of records outside Patagonia and southwestern Brazil have hindered the study of continental-scale paleobiogeographic relationships. We describe two new Late Cretaceous titanosaurians from Quebrada de Santo Domingo (La Rioja, Argentina), which help to fill a gap between these main areas of the continent. Our phylogenetic analysis recovers both new species, and several Brazilian taxa, within Rinconsauria. The data suggest that, towards the end of the Cretaceous, this clade spread throughout southern South America. At the same locality, we discovered numerous accumulations of titanosaurian eggs, likely related to the new taxa. With eggs distributed in three levels along three kilometres, the new site is one of the largest ever found and provides further evidence of nesting site philopatry among Titanosauria.

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Section: Introductionmentioning

confidence: 99%

Two Late Cretaceous sauropods reveal titanosaurian dispersal across South America

et al. 2020

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“…Upper Cretaceous terrestrial ecosystems (Otero & Salgado, 2015). Despite the high faunal diversification during the Cenomanian-Turonian, there is no evidence of Rebbachisauridae in the fossil record from the Coniacian, revealing a post-Turonian sauropod faunal change, with Titanosauria as the only worldwide dominant mega-herbivores of the Late Cretaceous (e.g., Carballido et al, 2017;Gallina et al, 2021).…”

Section: Considerations On the Rebbachisauridae Fossil Recordmentioning

confidence: 99%

Nuevos Restos De Rebaquisáuridos Desde La Formación Huincul (Cenomaniano Medio–turoniano Temprano) Del Centro De La Cuenca Neuquina, Patagonia, Argentina

Bellardini

Filippi²,

Garrido³

et al. 2022

PEAPA

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In the central Neuquén Basin, the Huincul Formation comprises thick successions of Upper Cretaceous fluvial deposits widely exposed at the south and north-west of Huincul High. The vertebrate fossil record from the Huincul Formation is very abundant, especially considering the saurischian dinosaurs, including several theropod (Mapusaurus, Taurovenator, Aoniraptor, Skorpiovenator, Ilokelesia, Gualicho, Overoraptor, Tralkasaurus, and Huinculsaurus) and sauropod specimens (Choconsaurus, Argentinosaurus, Cathartesaura, Limaysaurus, and the indeterminate rebbachisaurid MMCH-Pv-49). In this contribution, we describe new rebbachisaurid sauropod findings from the El Orejano locality (Neuquén Province, Argentina), where coarse sandstones outcrop referred to the lower section of the Huincul Formation. The new material includes three axial elements that we refer to Rebbachisauridae: a partial dorsal neural arch (MAU-Pv-EO-633), an incomplete dorsal vertebra (MAU-Pv-EO-634), and an almost complete caudal vertebra (MAU-Pv-EO-666). These new findings share different features with other members of that family, although show some morphological differences with other rebbachisaurid taxa, which suggest a more diversified fauna in the central Neuquén Basin than previously known, at least during the Cenomanian/Turonian interval. This record from the new fossiliferous locality of El Orejano allows us to improve our knowledge about the morphological diversity of the Rebbachisauridae during the early Late Cretaceous. Furthermore, it represents one of the most modern records of the family, adding new information on the last stages of the evolutionary history of rebbachisaurids.

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“…Given the gauge type, a titanosauriform is disregarded as their possible trackmaker. In the Cretaceous of Argentina, sauropodomorphs non-titanosauriforms are only represented by diplodocoids (Otero and Salgado, 2015). Narrow-gauge trackways have been typically associated with diplodocoid trackmakers (e.g.…”

Section: Trackmaker Characteristics and Affinitymentioning

confidence: 99%

“…Upper Cretaceous of Argentina the only remains of diplodocoids that have been found are the rebbachisaurids (Otero and Salgado, 2015). In the Candeleros Formation this record includes only three taxa: Limaysaurus tessonei, Rayososaurus agrioensis and possibly Nopcsaspondylus alarconensis Apesteguía, 2007 (Calvo andSalgado, 1995;Apesteguía, 2007;Carballido et al, 2010).…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

A new narrow-gauge sauropod trackway from the Cenomanian Candeleros Formation, northern Patagonia, Argentina

Heredia

Pazos

Fernández

et al. 2019

Cretaceous Research

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Dinosaurs are extremely abundant in the Upper Cretaceous Neuquén Group of the Neuquén Basin (Argentina). Nevertheless, while osteological remains are rich the ichnological record is more restricted. A new sauropod dinosaur trackway with five manus-pes imprint sets discovered in the Cenomanian Candeleros Formation is described here. The trackway belongs to the narrow-gauge type that is identified for the first time in the Cenomanian and possibly for the Late Cretaceous. It is preserved as concave epirelief in fine-grained sandstones from floodplain deposits. The tracks, which are large in size (average length of 98 cm), include conspicuous rims with very well-preserved symmetrical ripples on top that are documented for the first time in the track record. Due to their preservation and the absence of clear anatomical details, the trackway was not assigned to any particular ichnotaxon. Taking into account the presence of rebbachisaurid diplodocoid remains in the Candeleros Formation, the classical association of narrow-gauge trackways with diplodocoids and the inferred gleno-acetabular distance, it is suggested that the studied trackway might belong to a large-sized rebbachisaurid. The worldwide record of Cenomanian dinosaur tracks includes only a few records of sauropod tracks. Thus, this new

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El Registro De Sauropodomorpha (Dinosauria) De La Argentina

Cited by 10 publications

References 37 publications

Two Late Cretaceous sauropods reveal titanosaurian dispersal across South America

Two Late Cretaceous sauropods reveal titanosaurian dispersal across South America

Nuevos Restos De Rebaquisáuridos Desde La Formación Huincul (Cenomaniano Medio–turoniano Temprano) Del Centro De La Cuenca Neuquina, Patagonia, Argentina

A new narrow-gauge sauropod trackway from the Cenomanian Candeleros Formation, northern Patagonia, Argentina

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