Phrenotopia

YouTube user Phrenotopia, who creates videos covering a variety of subjects, including alternate history, science in fiction and popular culture, reviews, and biology, has created a playlist detailing how animal life is thought to have arisen on Earth. It is a good beginner’s guide to different bodyplans and embryology, as well as providing speculation on what patterns of biological evolution are likely to be seen on other planets – and which are not. It is a good resource if you are just getting started trying to develop plausible alien animals. Watch it here.