https://diler.tube/videos/watch/8482a56b-f3b2-4b82-8aa8-825203cb4341 Only in the last 570 million years have life forms that we are familiar with started to evolve. Much of what we know about evolution comes from the fossil record. The first mammals started appearing about 220 million years ago, and only in the last 200,000 years did we, Homo sapiens, appear. A mass extinction during the late Cretaceous period (65 million years ago) destroyed three quarters of all plant and animal life; including dinosaurs. During this time, there were mammals around but all species we know today, including ourselves, were small rodent like animals. For those organisms that survived, the newly emptied ecological niches brought about an abundant emergence of new species through a process called adaptive radiation. Mammalian evolution hugely benefited. The first primates appeared. Sat, 14 Nov 2026 00:55:15 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://diler.tube https://diler.tube/lazy-static/avatars/f58b270a-6076-478a-ad43-3888a532ecb4.png https://diler.tube/videos/watch/8482a56b-f3b2-4b82-8aa8-825203cb4341 All rights reserved, unless otherwise specified in the terms specified at https://diler.tube/about and potential licenses granted by each content's rightholder.