After analyzing new data from ocean drilling, researchers say that a city-sized asteroid is “what snuffed out the dinosaurs and half of all other species on Earth 65 million years ago.” Continue reading for one more render and a video.

The KT extinction wiped out more than half of all species on the planet, including the dinosaurs, birdlike pterosaurs and large marine reptiles, clearing the way for mammals to become the dominant species on Earth, Imperial College added in its release.

[via NG]