The discovery provides new elements to the theory of dinosaur dispersion, suggesting that ornithischians had already begun to colonize regions further north, such as East Asia, at a time when ...

A Ph.D. student at Cambridge University, Baron became intrigued by how theropod-like early ornithischians were, and he began to wonder whether we should re-evaluate the basic shape of the dinosaur ...

The split between saurischians and ornithischians was first proposed in 1887 by British paleontologist Harry Seeley, who divided the groups based on the shape of their hips—a seductively obvious ...

However, there is another aspect to this explanation, which is that the earliest ornithischians of the Late Triassic had none of the anatomical characteristics of true ornithischians: they lacked ...

Ornithischians are bird-hipped dinosaurs and include a group featuring duck-billed dinosaurs, frilled dinosaurs like the Triceratops, and armored dinosaurs like the Ankylosaurs.

If theropods and ornithischians come from one common ancestor, it means feathers only evolved once, instead of evolving separately in the two major branches of the dino tree.

Lesothosaurus diagnosticus was one of the most primitive and earliest ornithischians, or "bird-hipped" dinosaurs. Ornithischians were one of the two major groups of dinosaurs and included such ...

Such features "are lost in later ornithischians," Radermacher said. This tells us that early members of this group "were doing something very different with their bodies," he added.

If that’s true, Brusatte said, it will add as many as 7 million to 10 million years to the history of ornithischians. It also suggests that dinosaurs were much more common and widespread earlier ...

The theropods and ornithischians that escaped the effects of the Jenkyns event may have had a key adaptation to cooler climes; many dinosaurs from these groups are now thought to have been feathered.

The new findings suggest that theropods, a group of mostly carnivorous dinosaurs including Tyrannosaurus rex and Velociraptor, as well as the ornithischians, which include the mostly plant-eating ...