New Fossil Platyrrhines from Santa Cruz Province, Argentina

Abstract
New platyrrhine fossils have been recovered from early Miocene deposits near the Pinturas River in Santa Cruz Province, Argentina. Soriacebus ameghinorum is a saki-sized monkey with a deep V-shaped mandible, large procumbent incisors and small marmoset-like cheek teeth. Several other primate taxa are represented by dental, cranial, and post-cranial remains from the same deposits. These fossils document the presence of a phyletically and adaptively diverse fauna of primates in southernmost Argentina during the early Miocene.