Abstract The Pliocene–Pleistocene transition in the Neotropics is poorly understood despite
the major climatic changes that occurred at the onset of the Quaternary. The San Gregorio …

ABSTRACT The Huayquerías Formation (Late Miocene, Huayquerian SALMA) is broadly
exposed in west-central Argentina (Mendoza). The target of several major paleontological …

We describe the earliest petrosal bone referred to the South American endemic
Notoungulata, from the late Paleocene-early Eocene Beds of Itaboraí, which provides a …

Marsupials represent a major mammalian diversification today restricted geographically to
the Americas (but chiefly to the Neotropical Region) and Australasia. The group is highly …

Vertebrate-bearing deposits of the Geste Formation (Late Eocene) crop out in the Puna of
Catamarca and Salta, north-western Argentina, and have yielded specimens of a variety of …

The Santa Bárbara Subgroup of the Salta Group in northwestern Argentina represents a key
sedimentary record to understand the geological, biological, and climatological changes that …

The notoungulates are one major clade of extinct native South American ungulate
mammals. Several notoungulate morphotypes have been proposed by comparison with …

On the basis of selected osteological markers, Patterson identified two pathways (here
designated A and B) along which the internal carotid artery in notoungulates was said to …

ABSTRACT A new species of Toxodontia (Mammalia, Notoungulata), Pampahippus
secundus sp. nov., is described based on remains recovered from outcrops of the Lumbrera …

The aim of this work is to present a new genus and species of Dasypodidae from the
Lumbrera Formation (“lower Lumbrera”), early-middle Eocene of Salta Province, northwest …