The Archaeopithecidae is a very poorly known group of native ungulates from the Eocene of
Patagonia (Argentina), whose alpha taxonomy has remained obscure since Ameghino's …

In this contribution, we report the discovery of Archaeogaia macachaae gen. et sp. nov., one
of the oldest notoungulate recovered from the upper section of Mealla Formation in the …

In this contribution, a detailed systematic study of all species previously placed into the
genus Antepithecus, a Barrancan (middle Eocene)“notopithecine” from Patagonia, is …

Since 2006, new field studies at the late Oligocene site of Quebrada Fiera (Mendoza,
Argentina) have increased the previous faunal record from these levels that are presently …

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 …

Notohippidae (Notoungulata) specimens from the late Oligocene Quebrada Fiera locality
(Mendoza, Argentina) were previously identified as a new taxon, Mendozahippus fierensis …

Recent field work at the Deseadan (late Oligocene) locality of Quebrada Fiera (Mendoza
Province, Argentina) has provided new fossil remains that greatly increased the faunal …

Notoungulates were the most diverse group of South American native ungulates during the
Cenozoic. They ranged from small rodent-like to heavy rhino-like forms and, despite this …

A phylogenetic analysis of all Eocene taxa assigned to Notopithecinae has been conducted,
evaluating relationships amongst notopithecines, basal interatheriids and Interatheriinae …

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 …