An incomplete fossilized skull that has sat in the collections of the Natural History Museum of Denmark since the 19th century has turned out to represent...
Paleontologists have uncovered the first direct physical evidence that colossal prehistoric crocodiles hunted large plant-eating mammals in what is now...
A previously unrecognized species of the antthrush genus Chamaeza has been discovered in the isolated highland rainforests of northeastern Brazil.
The...
Paleontologists studying a 236-million-year-old cynodont fossil from Argentina say they have found the earliest evidence yet of viviparity (live birth)...
Paleontologists have unearthed a remarkably preserved fossil snake in Brazil that is reshaping ideas about how the earliest snakes lived and complicating...
Paleontologists in Uruguay have identified a new species of aeolosaurine titanosaur from a pair of remarkably well-preserved tailbones unearthed in the...
In an analysis of 390 traditionally cultivated cacao trees representing traditional Amazonian varieties, researchers identified four previously unknown...
New research suggests that the first widespread human cultures in the Americas were not opportunistic foragers who ate whatever they could find, but specialized...
Paleontologists working in Brazil have identified a previously unknown species of archosauriform that lived about 240 million years ago and may belong...
A 113-million-year-old pterosaur fossil from northeastern Brazil has yielded rare evidence of soft tissues, organic molecules and chemical traces of a...
Hundreds of camera-trap records from Bolivia and Peru suggest the short-eared dog (Atelocynus microtis), one of the world’s least-known canids and one...
Paleontologists have identified a new species of meiolaniform turtle from northern Patagonia, Argentina, that lived during the Maastrichtian age, just...
Paleontologists in Argentina have identified a previously unknown species of unenlagiid dinosaur that stalked freshwater wetlands during the Late Cretaceous...
Fossils unearthed on a remote Argentine ranch belong to a new genus and species of macronarian sauropod dinosaur, according to an international team of...
A landmark study of several butterfly lineages and a day-flying moth in South America shows that convergent evolution — when unrelated species arrive...
A comprehensive genome-wide analysis of Amazonian two-toed sloths (genus Choloepus) suggests the animals are more genetically diverse than once believed,...
Paleontologists in Brazil have identified a new genus and species of hyperodapedontine rhynchosaur — an extinct lineage of beaked, herbivorous reptiles...
The Galápagos lava heron, a small heron that stalks the lava-strewn shores of the Galápagos Islands, Ecuador, may finally have secured its place as a...
In the cold, wave-battered channels off southern Chile, scientists have identified what they say is a new species of the steamer duck genus Tachyeres,...
