A previously untapped source of data sheds new light on the climate of the early Earth: fossilized dinosaur teeth show that the atmosphere during the Mesozoic era, between 252 and 66 million years ago, contained far more...
Fossils in Africa from the Late Cretaceous time period - around 100 to 66 million years ago - are rare. Scientists have been largely kept in the dark about the course of dinosaur evolution on the continent, but a new dinosaur...