that join together with postzygapophyses, as to form a caudal process which ends cranial to the midpoint of the following vertebrae. The reduction of the size of the postzygapophyses coincides with the reduction of the prezygapophyses. Unlike other ankylosaurids, Chuanqilong lacked a tail club as it lacks the modified handle-like vertebrae in the distal portion of the tail. The coracoid is not co-ossified with the scapula, which might represent an ontogenetic trait as it is also known in other juvenile ankylosaur specimens. The scapula blade has a rhomboid-like outline, with a dorsal margin that is straight and a ventral margin that is concave. The narrowest point of the scapular blade is towards the head of the glenoid fossa. The ventral edge of the scapula lacks a distinct enthesis, which may also represent an ontogenetic trait. The glenoid fossa has an oval outline and is large. The humerus is short, with a large deltopectoral crest. The proximal end of the femur has a width that is much greater than the width of the distal end. The radial condyle is more prominent than the medial ulna condyle, while the lateral epicondylar ridge is underdeveloped. The ulna has a wedge-shaped olecranon process, as in other immature ankylosaur specimens and may represent an ontogenetic characteristic. The radius is slender and rod-like, with a distal end that is wider transversely than the proximal end of the radius. Only the left manus is known, which consists of four metacarpals that are all slender in appearance. Out of all the metacarpals, metacarpal III is the longest while metacarpal IV is the shorter. The other metacarpals are sub-equal in length. The most robust metacarpal is metacarpal I, while metacarpals II and IV are the slenderest. The distal and proximal ends if all the metacarpals are expanded. The ungual phalanges have a triangular outline with a sharp point, while the ventral surfaces are flattened. The preacetabular process of the ilium is long and is rotated towards the middle, while the postacetabular process is rotated in apposition. The preacetabular process diverges sideways from the vertebral column and has a straight side margin. The postacetabular process has a subtriangular outline and is shorter than the acetabulum. The pubic peduncle has a profile that is sub-rounded and developed, while the ischial peduncle is undeveloped. The ischium is long, lacks an obturator process and has a slender shaft that curves slightly towards the