Insights into Pleistocene palaeoenvironments and biostratigraphy in southern Buenos Aires province (Argentina) from continental deposits

Beilinson, Elisa; Gasparini, Germán Mariano; Soibelzon, Leopoldo Héctor; Soibelzon, Esteban

doi:10.1016/j.jsames.2015.02.005

Cited by 7 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FA1 emerges in the basal sector (sometimes also at medium sector) of the cliffs that extend almost continuously from Centinela del Mar to Mar del Sur localities (Cenizo, 2011, p. 30; see also Cenizo and Tassara, 2013, p. 21). In addition, the FA1 has been recognized (in similar facies succession, although not equal) in the Chocorí stream area as “Lower Interval” by Beilinson et al (2015). The FA1 is characterized by a predominance of fluvial-alluvial depositional events of great homogeneity and amplitude, with the development of massive carbonate banks and “grid-like” carbonate infiltrations as main post-depositional facies, especially on its upper contact.…”

Section: Systematic Paleontologymentioning

confidence: 94%

“…The FA1 is characterized by a predominance of fluvial-alluvial depositional events of great homogeneity and amplitude, with the development of massive carbonate banks and “grid-like” carbonate infiltrations as main post-depositional facies, especially on its upper contact. The greater consolidation of its sediments, as well as the tabular appearance and the large horizontal extension of its deposits with respect to the overlying facies, are some of the main features that allow a rapid identification of FA1 in the field (Cenizo, 2011; Beilinson et al, 2015). Such facies association has been correlated with the Middle Allomember of the Punta San Andrés Alloformation described by Zárate (1989), ~40 km NE of the type locality (Cenizo, 2011; Beilinson et al, 2015).…”

Section: Systematic Paleontologymentioning

confidence: 99%

See 1 more Smart Citation

A new echimyid genus (Rodentia, Caviomorpha) in Central Argentina: uncovered diversity of a Brazilian group of mammals in the Pleistocene

Candela

Cenizo

Tassara³

et al. 2019

J. Paleontol.

View full text Add to dashboard Cite

We describe a new extinct spiny rat, Proclinodontomys dondasi n. gen. n. sp. (Rodentia, Caviomorpha, Echimyidae), represented by a noteworthy preserved skull and mandible from the early-middle Pleistocene outcrops at the coastal cliffs of SE Buenos Aires Province (Central Argentina). Phylogenetic analyses allow us to propose that the new species described here and the already known Eurzygomatomys mordax (Winge) represent a new genus closely related to the living Euryzygomatomys spinosus and Clyomys laticeps. The new genus differs from Euryzygomatomys and Clyomys by having much more procumbent upper incisors, a more developed fossa for the M. temporalis, more flared and laterally expanded zygomatic arches, frontal less markedly expanded posteriorly, jugals much deeper anteriorly than posteriorly, with the dorsal border descending more abruptly posteriorly, smaller orbital cavity, and external auditory meatus relatively smaller and slanted upward and backward. Several features of the new species reflect a higher degree of adaptation to semifossorial habits than those of E. spinosus. The origin of the semifossorial ecomorphotype within echimyids may have been triggered by the expansion of relatively open and arid environments that arose near the Miocene-Pliocene boundary. The record of this new echimyid in Central Argentina indicates that during the early-middle Pleistocene, the southern limit of the geographic range of extinct representatives of the Brazilian lineage of semifossorial echimyids extended farther south than that of their living members.UUID: http://zoobank.org/c30ec1fe-4352-4867-a02f-e0d45c884bfe

show abstract

Section: Systematic Paleontologymentioning

confidence: 94%

Section: Systematic Paleontologymentioning

confidence: 99%

A new echimyid genus (Rodentia, Caviomorpha) in Central Argentina: uncovered diversity of a Brazilian group of mammals in the Pleistocene

Candela

Cenizo

Tassara³

et al. 2019

J. Paleontol.

View full text Add to dashboard Cite

show abstract

“…This biostratigraphical scheme has therefore become a standard with which other South America sequences are now routinely compared (e.g. Lopes et al, 2010;Tonni et al, 2009;Beilinson et al, 2015).…”

Section: Hereabouts 63 North and South Americamentioning

confidence: 99%

Fossils from Quaternary fluvial archives: Sources of biostratigraphical, biogeographical and palaeoclimatic evidence

White

Bridgland

Limondin-Lozouët

et al. 2017

Quaternary Science Reviews

View full text Add to dashboard Cite

Fluvial sedimentary archives have the potential to preserve a wide variety of palaeontological evidence, ranging from robust bones and teeth found in coarse gravel aggradations to delicate insect remains and plant macrofossils from fine-grained deposits. Over the last decade, advances in Quaternary biostratigraphy based on vertebrate and invertebrate fossils (primarily mammals and molluscs) have been made in many parts of the world, resulting in improved relative chronologies for fluviatile sequences. Complementary fossil groups, such as insects, ostracods and plant macrofossils, are also increasingly used in multi-proxy palaeoclimatic and palaeoenvironmental reconstructions, allowing direct comparison of the climates and environments that prevailed at different times across widely separated regions. This paper reviews these topics on a regional basis, with an emphasis on the latest published information, and represents an update to the 2007 review compiled by the FLAG-inspired IGCP 449 biostratigraphy subgroup. Disparities in the level of detail available for different regions can largely be attributed to varying potential for preservation of fossil material, which is especially poor in areas of non-calcareous bedrock, but to some extent also reflect research priorities in different parts of the world. Recognition of the value of biostratigraphical and palaeoclimatic frameworks, which have been refined over many decades in the 'core regions' for such research (particularly for the late Middle and Late Pleistocene of NW Europe), has focussed attention on the need to accumulate similar palaeontological datasets in areas lacking such long research histories. Although the emerging datasets from these understudied regions currently allow only tentative conclusions to be drawn, they represent an important stage in the development of independent biostratigraphical and palaeoenvironmental schemes, which can then be compared and contrasted. *Manuscript Click here to view linked References Highlights Research over the last decade into biostratigraphical data recorded in fluvial archives is reviewed Consideration of biogeography and palaeoclimatic evidence is also included This emphasizes the disparities in research priorities and fossil preservation on a global scale *Highlights (for review)

show abstract

“…Both Lf G and Lf I are grouped into the Facies Association 2 (FA2, [36]). It was tentatively correlated with the unit Upper Allomember of the Punta San Andrés Alloformation [36], located about 50 km NE of the Centinela del Mar [39,40]. These units are well exposed and extend all over the cliff surface of Centinela del Mar to the NE and SW [36,40].…”

Section: Methodsmentioning

confidence: 85%

A Pleistocene freshwater ichthyofaunal assemblage from central Argentina: What kind of fishes lived in the Pampean lagoons before the extinction of the megafauna?

et al. 2020

View full text Add to dashboard Cite

This study contributes to the knowledge of continental fishes recovered from sedimentary successions corresponding to the Bonaerean Stage/Age (late mid-Pleistocene) in the locality of Centinela del Mar, General Alvarado County, Buenos Aires province, Argentina. At this site we describe fossil fishes from a palaeolagoon, including Corydoras sp., Pimelodella sp., Rhamdia sp., Oligosarcus sp., small undetermined characids, Jenynsia sp. and Odontesthes sp. The recovered ichthyofaunal assemblage comprises at least seven taxa of Paranaean lineage. The taxonomic composition of the palaeoichthyofauna is quite comparable to that presently found in Bonaerean Watercourses of the Atlantic Drainage ecoregion. This suggests that local ichthyofaunal communities have remained relatively stable since the late mid-Pleistocene.

show abstract

Insights into Pleistocene palaeoenvironments and biostratigraphy in southern Buenos Aires province (Argentina) from continental deposits

Cited by 7 publications

References 27 publications

A new echimyid genus (Rodentia, Caviomorpha) in Central Argentina: uncovered diversity of a Brazilian group of mammals in the Pleistocene

A new echimyid genus (Rodentia, Caviomorpha) in Central Argentina: uncovered diversity of a Brazilian group of mammals in the Pleistocene

Fossils from Quaternary fluvial archives: Sources of biostratigraphical, biogeographical and palaeoclimatic evidence

A Pleistocene freshwater ichthyofaunal assemblage from central Argentina: What kind of fishes lived in the Pampean lagoons before the extinction of the megafauna?

Contact Info

Product

Resources

About