About 3 million years ago (Ma), the I sthmus of P anama joined the A mericas, forming a land
bridge over which inhabitants of each A merica invaded the other—the G reat A merican B …

The idea that South America was an island continent over most of the Cenozoic, during
which its unusual mammalian faunas evolved in isolation, is outstandingly influential in …

The current literature on marsupial phylogenetics includes numerous studies based on
analyses of morphological data with limited sampling of Recent and fossil taxa, and many …

No large group of recently extinct placental mammals remains as evolutionarily cryptic as
the approximately 280 genera grouped as 'South American native ungulates'. To Charles …

An appraisal of Paleogene floral and land mammal faunal dynamics in South America
suggests that both biotic elements responded at rate and extent generally comparable to …

“An enjoyable read that provides a substantial amount of detail on the biology, ecology, and
distribution of these fantastic animals... Highly recommended.”—Choice More than 10,000 …

Previously known only from isolated teeth and lower jaw fragments recovered from the
Cretaceous and Palaeogene of the Southern Hemisphere, the Gondwanatheria constitute …

The oldest Cenozoic mammalian assemblages in South America have been recovered from
levels of the Hansen Member of the Salamanca Formation, Punta Peligro locality in …

The evolutionary history of Eucalyptus and the eucalypts, the larger clade of seven genera
including Eucalyptus that today have a natural distribution almost exclusively in Australasia …

A new Ar/Ar date on the Las Flores Tuff (Río Chico Group, Las Flores Fm., central Patagonia,
Argentina) yielded an age of 49.512±0.019 Ma. This tuff, which stratigraphically overlies the …