the abundance of fossils of western Liaoning, and "long" (dragon). The specific name, chaoyangensis, refers to the broader geographical area which encompasses the type locality. In 2014, the impressions of a scapulocoracoid and humerus belonging to an indeterminate ankylosaur with an estimated body length of 6.0-8.6 metres (19.7-18.2 feet) were described from the Jiufotang Formation and, at the time, was the first ankylosaur described from the formation. A Canadian Society of Vertebrate Palaeontology abstract book that was published in 2019 mentioned that the type and only known specimen of Chuanqilong actually represented an adult individual, in contrast to the interpretation of Han et al. (2014), and may have been Liaoningosaurus at a different and later ontogenetic stage. Description Size and distinguishing traits Han et al. (2014) gave Chuanqilong an estimated length of 4.5 metres (14.8 feet). However, the authors suggested that it could have reached larger sizes as the type specimen represents a juvenile individual. The describing authors indicated two distinguishing traits. Both of these are autapomorphies, unique derived characters. The quadrate has a glenoid fossa that is at the same level as the dentary tooth row. The distally tapering ischium is constricted at midshaft length. Other distinguishing traits include the presence of a long retroarticular process, the presence of a lacrimal that is slender and wedge-like, a ratio of humerus to femur length of 0.88, the width of the proximal end of the humerus is half of the length of the humeral shaft, and the presence of subtriangular unguals. Cranium In ventral view, the skull is triangular. The maxilla has a buccal with a notched margin that is shallow and flattened, while an antorbital fenestra is present in the caudodorsal region. A slender, wedge-shaped lacrimal forms the rostral margin of the orbit and a long supraorbital contacts the lacrimal rostroventrally. A bone which might be composed of the squamosal and the postorbital has a subrectangular outline and grooves that are subparallel. The left quadrate has a rectangular head and is straight, with the shaft forming a wide and shallow depression underneath the quadrate head. Unlike nodosaurids, the quadrate isn't fused with the squamosal. The pterygoid process has a transversely expanded ventral end which is composed of two mandibular condyles, and has an outline that is subrectangular. As in most other ankylosaurs, the medial condyle is wider across and extends further towards the underside than the lateral condyle. As in