<P> The scientific question within which larger group of animals birds evolved , has traditionally been called the origin of birds . The present scientific consensus is that birds are a group of theropod dinosaurs that originated during the Mesozoic Era . </P>
<P> The scientific question within which larger group of animals birds evolved , has traditionally been called the origin of birds . The present scientific consensus is that birds are a group of theropod dinosaurs that originated during the Mesozoic Era . </P>
who are believed to be the direct ancestors to birds
who are believed to be the direct ancestors to birds
theropod dinosaurs
theropod dinosaurs