birddinosaur

Bird-dinosaurs, also known as ornithomimosaurs, are a group of theropod dinosaurs that lived during the Late Cretaceous period, approximately 125 to 66 million years ago. They are characterized by their bird-like features, including feathers, lightweight bones, and a unique hip structure that allowed them to run on two legs. Ornithomimosaurs were small to medium-sized dinosaurs, with some species reaching lengths of up to 10 meters.

The most well-known bird-dinosaur is Ornithomimus, which means "bird mimic" in Greek. This dinosaur had a long, slender body, a long tail, and a distinctive crest on its head. It is believed that Ornithomimus may have used its crest for display purposes, similar to modern birds. Other notable bird-dinosaurs include Struthiomimus, which had a long neck and legs similar to those of an ostrich, and Deinonychus, which was one of the first dinosaurs to be discovered and is known for its large claws.

Bird-dinosaurs are an important group of dinosaurs because they provide insight into the evolution of birds. Many scientists believe that birds are the descendants of a group of ornithomimosaurs that evolved feathers and lost their teeth. This theory is supported by the discovery of fossils that show a gradual transition from feathered dinosaurs to modern birds.