The Plants and MammalsLiterally everything alive today can trace its ancestry back to the survivors of the asteroid impact, including humans. As a result, what we know today as the “modern world” was shaped by the recovery. The discoveries at Corral Bluff set the scene for the first one million years after the asteroid impact.
In the aftermath, ecosystems are completely devastated and extinction occurs everywhere on the planet, on land, and in the sea. All large animals are wiped out. The biggest animal to survive the mass extinction is a soft-shelled turtle weighing about 200 pounds; the largest surviving mammal weighs about a pound.