Fossils of Bolivia

Macroeuphractus is a genus of extinct armadillos from the Late Miocene to Late Pliocene of South America. The genus is noted for its large size, with Macroeuphractus outesi being the largest non-pampathere or glyptodont armadillo discovered, as well as its specializations for carnivory, unique among all xenarthrans.

Hoffstetterius is an extinct genus of toxodontid notoungulate mammal, belonging to the subfamily Toxodontinae whose remains were discovered in the Middle to Late Miocene (Mayoan to Montehermosan) Mauri Formation in the La Paz Department in Bolivia. The only described species is the type Hoffstetterius imperator.

Hemihegetotherium is an extinct genus of hegetotheriid notoungulate that lived from the Middle to the Late Miocene of what is now Argentina.

Paraborhyaena is an extinct genus of Sparassodont, belonging to the family Proborhyaenidae. It was one of the large terrestrial predators that roamed South America during the Oligocene.

Branisella is an extinct genus of New World monkey from the Salla Formation of what is now Bolivia during the Late Oligocene, approximately 26 million years ago (Deseadan), comprising only the species Branisella boliviana. Together with the Peruvian genus Canaanimico, it is the oldest fossil New World monkey discovered.

Plaxhaplous was a dubious genus of glyptodont, an extinct relative of the modern armadillo. It lived in the Pleistocene epoch. The type species is Plaxhaplous canaliculatus. Plaxhaplous canaliculatus fossils were found in Argentina, near Luján in Buenos Aires Province. Plaxhaplous fossils have also been found in Uruguay. and in the Charana Formation of Bolivia.

Promacrauchenia is an extinct genus of macraucheniids that lived during the Late Miocene to Late Pliocene epochs of what is now Argentina and Bolivia. It belongs to the subfamily Macraucheniinae, which also includes Huayqueriana, Macrauchenia, and Xenorhinotherium. Fossils of this genus have been found in the Ituzaingó, Andalhuala, and Cerro Azul Formations of Argentina.