It is widely agreed that such an object -- 10 kilometers across -- struck just off the coast of the Yucatan peninsula 65 million years ago. According to scientists who maintain that dinosaur ...

Gizmodo reports the oldest sequenced DNA belongs to a million-year-old woolly mammoth. DNA is a relatively fragile molecule, and dinosaurs went extinct 65 million years ago, so the idea of sequencing ...

Fossils found in the northern part of Hokkaido are a new type of ammonite, the once-ubiquitous spiral-shelled creatures that went extinct with the dinosaurs 65 million years ago, researchers said.