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,...
Fossil jaws of the ancient monkey species Stirtonia victoriae from the La Victoria Formation in Colombia suggest that a shift toward leaf-eating allowed...
A new genus and species of archaic stem tetrapod from the Permian period has been identified from fossil jawbones found in Brazil. Named Tanyka amnicola,...
An antbird long thought to be a single widespread species across the Amazon rainforest is, in fact, several different ones. Among them are two newly-described...
A remarkably complete skeleton of the alvarezsauroid dinosaur species Alnashetri cerropoliciensis from Patagonia, Argentina, as well as two alvarezsauroid...
Paleontologists in Brazil have identified a previously unknown species of somphospondylan sauropod dinosaur with European affinities, hinting at ancient...
Paleontologists have unearthed fossilized bones of one of the smallest sauropodomorph dinosaurs from the Late Triassic of southern Brazil, offering fresh...
A new genus and species of titanosaur sauropod dinosaur that lived during the Cretaceous period has been identified from the fossilized remains found in...
Deep in the seasonally flooded savannas of Bolivia, a small, olive-green songbird has been quietly eluding science. Now, after six decades of confusion...
Ornithologists have discovered a new species of tinamou living in the montane forests of the Serra do Divisor, western Amazonia, Brazil.
An individual...
The newly-discovered theropod and sauropod footprints are part of the Late Jurassic Majala Formation, and represent the oldest dinosaur footprints reported...
Paleontologists have performed a comprehensive anatomical reassessment of the fossilized remains of two coelurosaurian theropod dinosaurs from the Early...
The Carreras Pampa site in the Torotoro National Park, Bolivia, records 1,321 trackways and 289 solitary tracks, totaling 16,600 theropod dinosaur tracks;...
