nov CPAP-3165 and Antarctopelta oliveroi MLP 86-X-28-1. a, c, e, Stegouros elengassen synsacral complex in anterior, posterior and ventral views. b, d, f, g, Antarctopelta oliveroi synsacral elements in anterior, posterior and ventral views. h, j, Stegouros elengassen 6th caudal vertebrae in posterior and right lateral views. i, k, Antarctopelta oliveroi anterior caudal vertebrae in posterior and right lateral views. l, n, Stegouros elengassen 17th caudal vertebrae in dorsal and posterior views. m, o, Antarctopelta oliveroi posterior caudal vertebrae in dorsal and posterior views. Scale bars a, c, e, h, j, l, n = 2 cm, b, d, f, g, i, k, m, o = 5 cm. cv, caudal vertebra; ds, dorsosacral vertebrae; dsr, dorsosacral rib; nc, neural canal; np, neural peduncle; poz, postzigapophysis; pre, prezygapophysis; rim, ventral rim; sr, sacral rib; tp, transverse process; vg,

ventral groove.