Jiangxialepis

Jiangxialepis retrospina, the type species, is distinguished from other shuyuids by the presence of a middle dorsal spine, its anterior end of the median dorsal opening slightly disrupting the rostral margin of the head shield, its large and oval-shaped orbital openings, its pineal opening being level with the centre of the orbital opening, and its seven lateral transverse canals on each side.^[1] Jiangxialepis jiujiangensis differs from J. retrospina because it possesses narrow spine-shaped inner cornual processes as well as a sharp and posteriorly positioned median dorsal spine.^[2] Jiangxialepis rongi, meanwhile, is distinguished from both the other two Jiangxialepis species by its broader headshield and the serrated margin of the headshield and median dorsal opening.^[3]