Evolutionary biologists study ancestry and descent among species, using various techniques to understand how organisms descended from a common ancestor. They study evolution on both small and large scales, and their work is interdisciplinary. Many work in academia, combining research and teaching, while others work in industry or related fields. An evolutionary biologist is someone […]
Major evolutionary innovations in the first three billion years of life on Earth were the evolution of oxyphotosynthetic bacteria and complex cells. The evolution of a third germ layer, predation, eyes, colonization of the earth by plants and animals, and true flight are the most important evolutionary innovations. The transfer to land is more important […]
Birds evolved from small dinosaurs about 155 million years ago, with feathers and the ability to glide and eventually fly. The most famous fossil indicating an evolutionary link between dinosaurs and birds is Archaeopteryx. The extinction of dinosaurs and pterosaurs left the skies open, allowing birds to become a major source of food for carnivorous […]
