Footprints and trackways provide valuable information about trackmaker behaviour, locomotion, spatial and temporal distribution, among others. Here we describe tetradactyl mammalian footprints and trackways recorded in ...

A late Oligocene plant macrofossil assemblage is described from the Río Leona Formation, Argentinian Patagonia. This includes a fern, “Blechnum” turbioense Frenguelli, one species of conifer, and sixteen angiosperm taxa. ...

Fossil anuran remains from an outcropping of Oligocene sediments in central Patagonia have been attributed to the extant genus Eupsophus based on their putative similarity to the skeleton of living members of this genus. ...

The Deseadan South American Land Mammal Age (late Early Oligocene – Late Oligocene) attests to a time of great diversification in the caviomorph rodent fossil record. Nevertheless, Deseadan rodent-bearing localities in ...

Notohippidae (Notoungulata) specimens from the late Oligocene Quebrada Fiera locality Mendoza, Argentina) were previouslyidentified as a new taxon, Mendozahippus fierensis Cerdeño and Vera. New cranial, mandibular, and ...

Squamata are known from South America since the Cretaceous, but their fossil record has an occurrence gap between the late Eocene and early Miocene. Fossils recovered from the Sarmiento Formation (Deseadan South American ...