Chasicotatus was originally described as a monotypic genus based on Chasicotatus ameghinoi Scillato-Yané, 1979, from the upper member of Arroyo Chasicó Formation (Las Barrancas Member, late Chasicoan). An additional species, Chasicotatus peiranoi , was erected by Esteban and Nasif (1996).…

The Arroyo Rojo deposit is the most important polymetallic, volcanic-hosted massive sulphide close to the town of Ushuaia in the rhyolitic belt of the Andes of the Tierra del Fuego. The deposit occurs in a region with north-verging thrusts and…

In Buenos Aires coasts, sedimentary processes were particularly active during the Quaternary owing to eustatic fluctuations in sea level. As a result, during the late Quaternary transgressions, marine and marginal marine sediments were deposited in the coastal plain. In order…

The aim of this paper is to increase the knowledge of the diversity of digenean parasites from birds collected in Formosa Province, Argentina. The helminthological survey of 15 specimens of 6 bird species revealed the presence of 5 digenean species:…

A new freshwater leech species Helobdella fantasmae n. sp. is described. This description is based on the examination of 12 specimens collected in Laguna Fantasma, Bariloche (41° 05'S 71° 28'W), during December 2002. Leeches were found attached to submerged plants.…

A radiocarbon date (7550 ± 60 yr 14C BP) was obtained from bone collagen of an extinct ground sloth (Scelidotherium leptocephalum) from the locality of Río Cuarto (Córdoba province, Argentina). The fossil remains were recovered from the La Invernada Formation…

Anenterotrema liliputianum (Travassos, 1928) (Anenterotrematidae) is redescribed based on the type specimens fromMolossus molossus (Pallas) and Phyllostomus elongatus (Geoffroy) from Brazil, and also on new specimens collected from the Dwarf Dog-faced Bat, Molossops temminckii (Burmeister) (Molossidae) in Argentina. In addition,…

The purpose of this article is to analyze recent transformations in Argentinean migratory policies since the 2001 crisis, based on the state's passage of laws. The first part provides a brief historical outline approach as the framework and context for…

Worldwide, the study of fold and thrust belts and characterization ofstructures are mainly carried out through superficial geological observations and seismic reflection, as the main geophysical prospecting method. In this study we show how the resistivity method is a useful…

Paleomagnetic data from a sedimentary section from Santa Lucía archaeological site, Corrientes province (Northeastern Argentina) are reported. Natural remanent magnetization obtained from 74 oriented cores showed normal and intermediate magnetic remanence with negative and positive low inclination values during the…