A new genus of Sinosauropterygid was named two days ago. The species is named Huadanosaurus sinensis. It's a small Theropod dinosaur from Yixian Formation, dating to the Early Cretaceous. It would've coexisted with stuff like Sinosauropteryx, Mei, Yutyrannus, and Psittacosaurus.

https://academic.oup.com/nsr/advance-article/doi/10.1093/nsr/nwaf068/8030555?login=true

Edit: the paper also describes a second species of Sinosauropteryx, S. lingyuanensis.