The Cretaceous Period was a time of peak diversity and size for dinosaurs and the evolution of maniraptoran clade. Plesiosaurs and pliosaurs dominated the oceans, but were later replaced by modern sharks, rays, and fish species. The period saw a cool phase followed by volcanic activity and rising temperatures. Tropical oceans reached temperatures of up […]
The Cretaceous was a period dominated by dinosaurs and other large reptiles, with warm climates and high sea levels due to volcanic activity. Terrestrial vertebrate biomass was enormous, and the seas were occupied by marine reptiles. However, a massive asteroid struck the Earth 65.5 million years ago, causing the extinction of most animals, except for […]
