Mammals are the most encephalized vertebrates, with the largest brains relative to body
size. Placental mammals have particularly enlarged brains, with expanded neocortices for …

Triassic beds from Argentina and Brazil provide the most relevant fossil record of early
dinosauriforms in terms of numerical abundance and taxonomic diversity. This record …

The Mesozoic plate tectonic and paleogeographic history of the final break up of West
Gondwana had a profound effect on the distribution of terrestrial vertebrates in South …

As evolutionary biologists, we live in exciting and promising times. The material basis of our
science is growing at an unprecedented rate; fossils preserving structures we thought …

The placental skull has evolved into myriad forms, from longirostrine whales to globular
primates, and with a diverse array of appendages from antlers to tusks. This disparity has …

We present a detailed analysis of the craniomandibular and dental remains of Mesotherium
cristatum, the quaternary mesotheriid typotherid notoungulate, from Corralito, Santa María …

Andinodelphys cochabambensis Marshall & Muizon, 1988 is one of the best preserved
metatherian species from the early Palaeocene fauna of Tiupampa (Bolivia). It is …

Sparassodonts were the apex mammalian predators of South America throughout most of
the Cenozoic, diversifying into a wide array of niches including fox-like and even saber …

Campos Sulinos grasslands have a long evolutionary history intertwined with fire and
grazing: they are disturbance-dependent ecosystems. Disturbance, in this context, refers to …

Rodents are the most diverse order of extant mammals, and caviomorph rodents, or New
World hystricognaths, have a remarkable morphological disparity and a long fossil record …