In evolutionary terms, it sits low in the evolutionary tree of ornithischian dinosaurs. (sciencedaily.com)
A November 2017 analysis upheld the traditional view but found that other arrangements are almost equally likely — including a view that clusters herbivorous ornithischians and sauropods together. (sciencenews.org)
We knew that some of the plant - eating ornithischian dinosaurs had simple bristles, and we couldn't be sure whether these were the same kinds of structures as bird and theropod feathers. (sciencedaily.com)