In Baron's redrawn dinosaur family tree, the saurischians now only include the sauropodomorphs, and the theropods were grouped
with ornithischians to form a new classification named ornithoscelidans.
Instead, researchers placed theropods
with ornithischians, forming a group called Ornithoscelida, and put sauropodomorphs with the early and primitive herrerasaurs.
Not exact matches
This new analysis of dinosaurs and their near relatives, published today in the journal Nature, concludes that the
ornithischians need to be grouped
with the theropods, to the exclusion of the sauropodomorphs.
However, since 2002 paleontologists have unearthed a couple of other
ornithischians with primitive bristle or furlike feathers.
The herbivorous
ornithischians were a really diverse bunch,
with a spectacular array of frills and armors and horns and crests.
Recently,
ornithischians have been found
with what appear to be bristly feathers.
Harry Seeley, a British paleontologist, first proposed the split of saurischians and
ornithischians back in 1887,
with the classifications based on the shape of the hips of the dinosaurs.