scholarly journals The 4300-yr 14C Age of Glyptodonts at Luján River (Mercedes, Buenos Aires, Argentina) and Comments on ‘Did the Megafauna Range to 4300 BP in South America’ by Cione et al.

Radiocarbon ◽  
2001 ◽  
Vol 43 (1) ◽  
pp. 77-81 ◽  
Author(s):  
Eduardo A Rossello ◽  
Bor-ming Jahn ◽  
Tsung-Kwei Liu ◽  
Jorge L Petrocelli
Keyword(s):  
South America ◽  
Buenos Aires ◽  
Buenos Aires Province ◽  
Hunter Gatherers ◽  
14C Age ◽  
Precise Time

The glyptodont (Glyptodontidae Burmeister 1879, in Ameghino 1889), a giant cousin of the armadillo, has long been thought to have disappeared in South America at least 10,000 years ago at the end of the Pleistocene. There are indications that the glyptodont had some interaction with ancient hunter-gatherers peoples (Politis et al. 1987; Politis 1995), but the precise time of its extinction has never been well established. Most recently, a brief mention of 14C dates of 7500 to 6500 BP (Geotimes 1996) for glyptodont remains discovered at La Moderna (Azul Department, Buenos Aires province, Argentina), has aroused excitement because the new younger dates have changed the traditional idea about the survival and extinction of this beast.

Chronostratigraphy and “Land-Mammal Ages” in the Cenozoic of southern South America: principles, practices, and the “Uquian” problem

1995 ◽  
Vol 69 (1) ◽  
pp. 135-159 ◽  
Author(s):  
Alberto L. Cione ◽  
Eduardo P. Tonni
Keyword(s):  
South America ◽  
Buenos Aires ◽  
New South ◽  
Lower Boundary ◽  
Buenos Aires Province ◽  
South American ◽  
Southern South America ◽  
Matuyama Chron ◽  
Study Case ◽  
Land Mammal

The concept of “land-mammal age” as developed in South America is examined. The “Uquian Land-mammal age” is used as a study case. “Land-mammal age” parataxonomy is here considered methodologically but not conceptually different from chronostratigraphic taxonomy. “Land-mammal ages” in South America are based on stages. However, we consider that accurate biostratigraphic studies must be done in South America for establishing the biostratigraphy and precise boundary stratotypes of most stages-ages. The Uquia outcrops are here considered inadequate as a stratotype. A new South American continental stage-age is proposed. This stage is based on a biostratigraphic scheme. The stratotypes of the stage and biozones are located in the fossiliferous southeastern Buenos Aires Province marine cliffs. The lower boundary stratotype is proposed. The stage-age is probably correlated with the Gauss Chron and the lower Matuyama Chron. Additionally, some major units of Ameghino are validated and a different timing for the arrival of North American mammals to southern South America is presented.

scholarly journals Squamata, Scincidae, Mabuya dorsivittata (Cope, 1862): distribution extension in Buenos Aires province, Argentina

Check List ◽  
2011 ◽  
Vol 7 (3) ◽  
pp. 388 ◽  
Author(s):  
Jorge Williams ◽  
Federico Kacoliris
Keyword(s):  
South America ◽  
Buenos Aires ◽  
New Records ◽  
Wide Distribution ◽  
Buenos Aires Province ◽  
Previous Record ◽  
Northern Sector

Mabuya dorsivttata is a lizard with a wide distribution in South America. In Buenos Aires province, Argentina, previous voucher records exist only from its northern sector and from Mar del Plata city. In this work, two new records of M. dorsivittata from Buenos Aires province are presented: (1) Azul city (36°46’50” S, 50°51’10” W) and (2) Mar del Tuyú city (37°20’08” S, 59°07’60” W). These new records are located about 175 km from the nearest previous record. 

scholarly journals Did the Megafauna Range to 4300 BP in South America?

Radiocarbon ◽  
2001 ◽  
Vol 43 (1) ◽  
pp. 69-75 ◽  
Author(s):  
Alberto L Cione ◽  
Aníbal J Figini ◽  
Eduardo P Tonni
Keyword(s):  
South America ◽  
Buenos Aires ◽  
Bone Sample ◽  
Collagen Content ◽  
Buenos Aires Province ◽  
Radiocarbon Dates ◽  
Fossil Remains ◽  
The Poor ◽  
Bone Preservation ◽  
The City

A date of 4300 ± 90 BP for extinct megafauna in Argentina is discussed. The fossil remains come from the Guerrero Member (area) of the Luján Formation near the city of Luján, Buenos Aires Province. The age of the top of the Guerrero Member is constrained by more than 60 radiocarbon dates obtained from the overlying Río Salado Member of Luján Formation, Las Escobas Formation, and Puesto Callejón Viejo Soil, most of them older than 4300 BP. In view of its low collagen content, the 14C measurement of bone sample from Luján should not be accepted uncritically. Because of the poor bone preservation and the possible introduction of “young” contaminants that were not completely eliminated, the 14C date of 4300 ± 90 BP is not reliable. Both biostratigraphic and 14C dating evidence indicates that the date of 4300 BP for the last representative of extinct megafauna in South America is unsupported.

scholarly journals Fossil horses from the Late Pleistocene of Tapalqué Creek (Buenos Aires Province, Argentina)

2019 ◽  
Vol 294 (3) ◽  
pp. 285-305
Author(s):  
José L. Prado ◽  
Ricardo Bonini ◽  
Cristian Favier-Dubois ◽  
Gustavo N. Gómez ◽  
Pamela Steffan ◽  
...  
Keyword(s):  
South America ◽  
Buenos Aires ◽  
Buenos Aires Province ◽  
South American ◽  
Fluvial Deposits ◽  
Sedimentary Deposits ◽  
Diagenetic Processes ◽  
Taphonomic Analysis ◽  
Land Mammal ◽  
New Evidence

A comparative study was made with the known record of equids species in South America, identifying the remains as Equus neogeus, Hippidion devillei, and Hippidion principale. These data increase the record of Equidae in South America and provide new evidence about the chronological and geographical distribution. The sedimentary deposits of the Lujan Formation outcropping at Tapalqué creek (4 to 120 ky) were accumulated through fluvial processes. This Formation comprises a rich vertebrate fauna corresponding to the Lujanian South American Land Mammal Age, which includes numerous and diverse vertebrate remains. The taphonomic analysis indicates that the faunistic assemblage was formed and was subject to diagenetic processes without distinction of its action in the fossiliferous levels, that can be recognized as fluvial deposits.

scholarly journals A new stage in the Upper Cenozoic of Southern South America

1992 ◽  
Vol 6 ◽  
pp. 56-56
Author(s):  
Alberto L. Cione ◽  
Eduardo P. Tonni
Keyword(s):  
South America ◽  
Buenos Aires ◽  
New South ◽  
Lower Boundary ◽  
Geographic Location ◽  
Buenos Aires Province ◽  
South American ◽  
Southern South America ◽  
Matuyama Chron ◽  
Upper Cenozoic

Former workers developed in South America a chronostratigraphic system not essentially different to that of European stage/age system. However, the authors of this paper believe that accurate biostratigraphic studies have to be done in southern South America for establishing the precise boundary stratotypes of most stage/ages. A new South American Upper Cenozoic continental stage/age is recognized. The stratotype is located in the fossiliferous southeastern Buenos Aires Province marine cliffs between Mar del Plata and Miramar. The outcrops in the area are the best continental representation of Plio-Pleistocene times in South America. It is younger than Chapadmalalan and older than Ensenadan and replaces the “Uquian”. We consider that the “Uquian” actually emcopasses Chapadmalalan and Ensenadan times. The Uquía outcrops are here considered inadequate as stratotype especially by the dearth of micromanmals, the relatively poor fossil record and the comparatively inadequate geographic location. The new stage would be correlated with the Gauss Chron and possibly with the lower Matuyama Chron. The lower boundary is tentatively stated. For so doing, a biostratigraphic scheme is proposed. This lower boundary approximately corresponds to the base of the Barranca de los Lobos “Formation” of Kraglievich (1952) and a new (unpublished) unconformity bounded unit (Zárate, 1989). Some taxa that apparently ranges from the base are candidates to define it after a detailed biostratigraphic study.Additionally, a different timing for the arrival of North American mammals to southern South America is given.

Local trusts and forced heirship (Commentary to the “CRO” case)  C. R. O. c/C. O. N. y otros s/nulidad de acto jurídico (22 October 2019) Court: Civil and Commercial Law, Chamber of Appeals of Necochea (Buenos Aires Province—Argentina)

2020 ◽  
Author(s):  
Nicolas Malumian
Keyword(s):  
Latin America ◽  
South America ◽  
Buenos Aires ◽  
Civil Law ◽  
Case Law ◽  
Recent Case ◽  
Buenos Aires Province ◽  
Commercial Law ◽  
Sharia Law ◽  
First Time

Abstract This recent case is a leading case relating to local trusts and forced heirship. Forced heirship is a restriction to the liberty to write a will and determine the destiny of his/her future estate by the testator. It can be found in all South America (not in Latin America from Panama to México) and in most Civil Law countries in Europe, besides similar restrictions under sharia law. The way to avoid these restrictions has been the creation of a foreign trust over foreign assets. Although authors have long analyzed whether a local trust allows the avoidance of local forced heirship rules over local assets, there has been no case law in this respect (at least since the inclusion of the trust in Argentine law in 1995). In short, this is the first time a local trust over local assets has been under the scrutiny of the courts to determine if there is a violation of forced heirship.

scholarly journals Digenea, Strigeidae, Australapatemon canadensis Dubois and Rausch, 1950: first record in South America and a new host record

Check List ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 382 ◽  
Author(s):  
Fabiana B. Drago ◽  
Lía Inés Lunaschi
Keyword(s):  
South America ◽  
Geographical Distribution ◽  
Related Species ◽  
Buenos Aires ◽  
Host Record ◽  
First Record ◽  
Buenos Aires Province ◽  
New Host ◽  
New Host Record ◽  
Rio Negro

Australapatemon canadensis Dubois and Rausch, 1950 (Digenea, Strigeidae) is reported parasitizing to Cygnus melancoryphus (Molina) (Anatidae) from Lacombe Lagoon, Buenos Aires Province and Pellegrini Lake Río Negro Province, Argentina. This species is described and compared with related species. The finding of A. canadensis in C. melancoryphus in Argentina represents a new host record extending to South America the geographical distribution of this species.

scholarly journals Ischnura ultima Ris, 1908 (Odonata: Coenagrionidae): new records from southern South America

Check List ◽  
2014 ◽  
Vol 10 (1) ◽  
pp. 187
Author(s):  
Javier Muzón ◽  
Alejandro Del Palacio ◽  
Lía Ramos
Keyword(s):  
South America ◽  
Buenos Aires ◽  
New Records ◽  
Buenos Aires Province ◽  
Southern South America ◽  
Endemic Areas ◽  
First Time

Ischnura ultima Ris, 1908 is recorded for the first time from Buenos Aires Province, Argentina, 750 km southeast from the southernmost previous known localities (Córdoba Province). This finding supports a stronger biogeographical relationship between the southern hills of Buenos Aires (surrounded by the Pampas lowlands) and the Monte province. In addition, this record supports the odonate endemic areas scheme previously proposed for Argentina.

Description of Ptilohyale corinne sp. nov. (Amphipoda: Hyalidae) from the Bahía Blanca estuary, Argentina, including a key to all valid Ptilohyale species

Zootaxa ◽  
2020 ◽  
Vol 4763 (1) ◽  
pp. 125-137
Author(s):  
CATALINA DI ROSSI ◽  
MICHEL SCIBERRAS ◽  
VERONICA N. BULNES
Keyword(s):  
New Species ◽  
South America ◽  
Buenos Aires ◽  
First Record ◽  
Valid Species ◽  
Buenos Aires Province ◽  
Bahía Blanca Estuary ◽  
A New Species ◽  
Blanca Estuary

A new species of amphipod, Ptilohyale corinne sp. nov. (Hyalidae) is described from the Bahía Blanca estuary (38°53’S, 62°07’W) in Buenos Aires Province, Argentina. Ptilohyale corinne sp. nov. can be differentiated from its valid congeners by having two posterior marginal cusps on coxa 2 and 3, and asymmetrical telson lobes with a particular combination of setae: each lobe with three dorsal plumose setae and one seta on inner margin. This is the first record of Ptilohyale in South America. Additionally a key to the valid species of the genus is provided 

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