New research indicates that some sauropod dinosaurs, particularly when young, could stand upright on their hind legs to reach food, deter threats, or attract mates.
A 100-million-year-old insect with crab-like claws, a rare feature for insects, has been discovered in amber from Myanmar, representing only the fourth known instance of such independent evolution.
New research suggests that the size of eggs laid by ancient marine creatures may explain why ammonites went extinct while nautiloids survived the asteroid impact that ended the Cretaceous period.