Notoungulates were the most diverse and abundant clade of endemic South American
ungulates, present in nearly all Tertiary faunas. Hypsodont dentitions evolved in several …

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 …

Timing and ecological steps of the rise and expansion of grasslands differ not only
geographically but also according to the type of available information. Patagonia (Argentina) …

The rich Deseadan fauna from the locality of Salla Luribay (Bolivia) documents the last
occurrence of archaeohyracids, a poorly known group of small typotherian notoungulates …

ABSTRACT A new species of hegetotheriid notoungulate, Hemihegetotherium trilobus, is
described from the middle Miocene (Laventan SALMA) Quebrada Honda Fauna of southern …

Cranial endocasts are one of the most direct tools available to obtain information about the
endocranial cavity of fossil mammals, but few anatomical comparisons have analyzed …

Two new basal interatheriids (“notopithecines”) are described from central Chile. Specimens
of a new taxon, Johnbell hatcheri, derive from Abanico Formation deposits near Termas del …

Two new species of early Oligocene dasypodids are described from the Tinguiririca Fauna
of Chile, the basis of the recently formalised Tinguirirican South American Land Mammal …

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 extinct endemic South American notoungulates are remarkable for their early evolution
of hypsodonty in the Late Eocene/Early Oligocene. Due to this 'precocious hypsodonty'they …