Story thread · 9 reports / 9 sources

Why Were There No Tiny Dinosaurs? Mammals Might Have Played A Role

ndtv.com · 5dShare

Dinosaurs first appeared roughly 230 million years ago and eventually became the dominant land animals, holding that status until an asteroid struck Earth 66 million years ago, causing a mass extinction of species.

First report: New research contradicts popular theory that a nuclear winter wiped out the dinosaurs — nypost.com, 8d