Contribution to the knowledge of the Sparassocynidae (Mammalia, Metatheria, Didelphoidea), with comments on the age of the Aisol Formation (Neogene), Mendoza Province, Argentina

A new protodidelphid (Mammalia, Marsupialia, Didelphimorphia) from the Itaboraí Basin and its implications for the evolution of the Protodidelphidae

“…the youngest fossil records are known for the La Meseta Formation, Antarctica, and Paso del Sapo, Argentina; both date from the lower-middle Eocene ("Sapoan" SALMA) (Goin et al 1999(Goin et al , tejedor et al 2009, which identifies the Protodidelphidae as a short time span surviving lineage during the Paleogene of South America. Notwithstanding, the evolution of other metatherian lineages can be traced back to the Paleocene of South America or even to the Late Cretaceous of North America (Case et al 2005, Forasiepi et al 2009, Goin et al 2012, Oliveira and Goin 2012, Carneiro and Oliveira 2017a, b, Carneiro 2018, which is also expected for the Protodidelphidae.…”

A Terrestrial Gastropod Community from the Early Pliocene (Neogene) of Mendoza, Argentina, with Description of a New Species ofRadiodiscusPilsbry and Ferriss, 1906 (Mollusca: Pulmonata: Charopidae)

“…Recent studies divided the Aisol Formation into three sections based on lithology and paleontological content (Forasiepi et al, 2011Turazzini, 2013). The analysis of the vertebrate fauna found in the lower and middle sections indicated that their age could be Colloncuran (middle Miocene) and possible Montehermosan (early Pliocene) respectively (Soria, 1983;Forasiepi et al, 2009Forasiepi et al, , 2011Vucetich et al, 2012;Turazzini, 2013). The stratigraphic identity of these sections is currently under revision.…”

New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina

“…One of the areas studied and prospected is the Aisol Formation outcropping in the San Rafael Department, in the center of the province (Fig. 1a) (Forasiepi et al 2009Vucetich et al 2011). The Aisol Formation outcrops in isolated deposits that are exposed on the San Rafael Block and mainly associated with the Atuel and Diamante rivers (Dessanti 1954(Dessanti , 1956González Díaz 1972;Sepúlveda et al 2001Sepúlveda et al , 2007.…”