At the end of the Cretaceous, T-rex and triceratops populated the Earth along with many other dinosaurs. Meteorite impact? Volcanic eruption? The reason for their disappearance gave rise to a long and heated debate within the scientific community, which continues to this day... Through this story, we immerse ourselves in the world of dinosaurs and become aware of what paleontology offers us: a unique link with the history of life and with the history of our Earth.