Labrador Retriever-Sized Herbivore Shakes up Theories of Dino Evolution

In this week's Nature, researchers say they've analyzed a near-complete skeleton of one of the closest relatives to early dinosaurs, a silesaur called Asilisaurus. The fossil is more than 240 million years old, which is ten million years older than the earliest known fossils of true dinosaurs. The finding of this dino relative therefore suggests that dinosaurs emerged earlier than we previously believed, and it throws another surprise into the debate over their origins. From the remains of 14 different individuals, the scientists managed to piece together what a whole skeleton looked like. However, the finished product didn't look quite like they expected.