Cenozoic mammalian faunas from South America contrast with those of the other continents
by the great diversification of metatherian mammals. Among the later, a wide range of …

Xenarthra—a superorder of placental mammals endemic to the Neotropics—is represented
by armadillos, anteaters, and sloths. Considering their long history in the Americas, extant …

Xenarthrans constitute a relict clade of endemic South American placental mammals with a
long evolutionary history starting, at least, in the early Eocene. Within Xenarthra …

Localized extinction can play a significant role in obscuring reconstructions of historical
biogeography. Insects, one of the most diverse clades in the tree of life, have complex …

The late Pleistocene megafaunal extinctions may have been the first extinctions directly
related to human activity, but in North America the close temporal proximity of human arrival …

Despite a global fossil record, Metatheria are now largely restricted to Australasia and South
America. Most metatherian paleodiversity studies to date are limited to particular subclades …

In 1887 Carlos Ameghino carried out the earliest extensive exploration of the fossiliferous
localities along the Río Santa Cruz (Patagonia). His brother Florentino erected more than …

In this contribution the record of a Nothrotheriinae (Xenarthra, Tardigrada) ground sloth is
reported from the Late Pleistocene of the Northern Pampa of Santa Fe Province, Argentina …

The subfamily Equinae in the Great Plains region of North America underwent a dramatic
radiation and subsequent decline as climate changed from warm and humid in the middle …

Current evidence points to the Paleocene as one of the most important intervals in the
evolutionary history of mammals, with the fossil record recording a remarkable adaptive …