In the 1970s, paleontologists noticed that Archaeopteryx shared unique features with small carnivorous dinosaurs called theropods.
The birds are simply a twig on the dinosaurs’ branch of the tree of life.
As birds evolved from these theropod dinosaurs, many of their features were modified.
How do we know that birds and dinosaurs are related?
Since alligators descend from a common ancestor with dinosaurs, they can provide a useful evolutionary comparison to birds. (Despite their appearance, birds are more closely related to alligators than lizards are.) Perhaps birds evolved from dinosaurs by arresting their pattern of development early on in life.
Are birds evolved from dinosaurs?
The present scientific consensus is that birds are a group of theropod dinosaurs that originated during the Mesozoic Era. A close relationship between birds and dinosaurs was first proposed in the nineteenth century after the discovery of the primitive bird Archaeopteryx in Germany.
Which bird is closest to dinosaurs?
Coelurosaurian dinosaurs are thought to be the closest relatives of birds, in fact, birds are considered to be coelurosaurs.
What did birds evolve?
The evolution of birds began in the Jurassic Period, with the earliest birds derived from a clade of theropod dinosaurs named Paraves.