3.2.6 Tree of All Animals
Channel: Are We Alone?
Date: 04/10/2021

The one billion year phylogenetic tree of all animal evolution. A review of the largest evolutionary divisions among animals: vertebrates/invertebrates, protostomes/deuterostomes, bilaterians/non-bilaterians. Will aliens be deuterostomes or protostomes?...or won't they be animal-like at all?