The dinosaurs were not in decline before the asteroid hit, a new study finds. Instead, poor fossilization conditions and ...

Dinosaurs are the extinct relatives of birds ... The asteroid was likely between 6.2 and 9.3 miles (10 and 15 km) wide, and its collision with Earth triggered intense wildfires, tsunamis, and ...

Each footprint has three toes, indicating that they belong to the ichnospecies Anomoepus scambus, small dinosaurs with legs between 6 inches and 20 inches, Romilio said. They were likely traveling ...