WebThe first whales appeared 50 million years ago, well after the extinction of the dinosaurs, but well before the appearance of the first humans. Their ancestor is most likely an ancient artiodactyl, i.e. a four-legged, even-toed hoofed (ungulate) land … WebMay 20, 2024 · Whereas ichthyosaurs evolved from land-based reptiles that returned to the sea, much as dolphins and whales arose from re-oceaned mammals, the ancient sea beasts were unlikely to crawl onto land,...
The evolution of whales - Understanding Evolution
WebNo, people did not exist during the time when dinosaurs roamed the earth. The dinosaurs all went extinct about 65 million years ago (thats a long time!). The current thought, based … WebMar 25, 2024 · These animals—the early relatives of primates—would give rise to a lineage that led to the first monkeys, including great apes such as gorillas, chimpanzees, and eventually, humans. Now, scientists... rd wright albany ny
How Did Whales Evolve? Science Smithsonian Magazine
WebMay 20, 2024 · But the enormous creature appeared only about 2.5 million years after ichthyosaurs' debut, or within 1% of their 150 million years on the planet. By comparison, … Web2 days ago · The prehistoric reptiles known as dinosaurs arose during the Middle to Late Triassic Period of the Mesozoic Era, some 230 million years ago. They were members of a subclass of reptiles... WebMesozoic. Mesozoic (252-66 million years ago) means 'middle life' and this is the time of the dinosaurs. This era includes the Triassic, Jurassic, and Cretaceous Periods, names that may be familiar to you. It ended with a massive meteorite impact that caused a mass extinction, wiping out the dinosaurs and up to 80% of life on Earth. how to spell a few