WASHINGTON (Reuters) – The tusks of a stoutly built plant-eating mammal relative that inhabited Antarctica 250 million years ago are providing the oldest-known evidence that animals resorted to ...

Imaging technology has revolutionized paleontology, allowing scientists to study fossils that are buried deep in the rock or ...

Paleontologists may have discovered when plant-eating dinosaurs evolved their long necks after a new species of ...

Learn about the time period that took place 251 to 199 million years ago. 3 min read The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of ...

Argentinian scientists have found fossilized bones of one of the world's oldest dinosaur species in the Andes Mountains, the ...

Discovery published by CONICET scientists in prestigious 'Nature' scientific journal. Fossils are some 230 million years old.

Changes in inner ear canal morphology over time suggest that mammalian ancestors called mammaliamorphs evolved warm-bloodedness around 233 million years ago during the late Triassic period, according ...

The almost complete skeleton of a previously unknown species, Huayracursor jaguensis, has been found in northwest Argentina, ...

The Quebrada de Santo Domingo in Argentina is a harsh environment. Situated high in the Andes, the area is nearly ...

Many mammals and birds are remarkable athletes; mice work hard to dig burrows for protection and sparrows fight gravity with each flap of their wings. In order to have the energy to sustain vigorous ...

A nearly complete fossil of Huayracursor jaguensis, one of the world's oldest dinosaurs, was discovered in Argentina. This ...

Humans are diurnal--we are active in the day and sleep at night. But diurnalism is by far the exception rather the rule in mammals. About 250-230 million years ago, the mammalian ancestors, called the ...