Pulaosaurus

Pulaosaurus is an extinct genus of neornithischian dinosaur from the mid-Jurassic Tiaojishan Formation of Hebei, China. The genus contains a single species, Pulaosaurus qinglong, known from a nearly complete articulated skeleton including the skull and soft tissue impressions. It is one of the only non-avian dinosaurs known to preserve a larynx, suggesting it may have made bird-like vocalizations. Pulaosaurus is the first neornithischian named from the Yanliao Biota, though members of this clade have been known from other fossil beds of the same age for much longer.