End of the dinosaurs. Illustration of a Spinosaurus dinosaur as the asteroid that caused a mass extinction event 65 million years ago hits the Earth. The Cretaceous-Paleogene (or K-T) extinction event marked the boundary between the Cretaceous (K) and Tertiary (T) periods. It is thought to have been caused by a catastrophic asteroid impact that took place at sea. Water vapour thrown into the atmosphere lowered global temperatures, and plant and then animal life began to die off. The dinosaurs never recovered, and mammals rose to become the dominant form of life. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Victor Habbick Visions |
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