A new ankylosaurid dinosaur from the Upper Cretaceous of Jiangxi Province, southern China.

<italic>Huaxiazhoulong shouwen</italic> gen. et sp. nov. is a new ankylosaurid recovered from the Upper Cretaceous Tangbian Formation of Jiangxi Province, southern China. <italic>Huaxiazhoulong shouwen</italic> can be diagnosed on the basis of three autapomorphies (the middle shaft and distal end of the ischium are expanded; the ratio of width of distal end to minimum shaft width is greater than 3 in humerus, the maximum length of femur to humerus length ratio is about 1.45) and a unique combination of characters (the centra of anterior caudal vertebrae in anterior view is heart-shaped; the dorsal surface of scapula is straight; the scapulocoracoid has a large medial brace; the humeral head and deltopectoral crest are separated by a distinct notch anteriorly). The phylogenetic analysis shows that <italic>Huaxiazhoulong shouwen</italic> is an early member of Ankylosauridae. [ABSTRACT FROM AUTHOR]