English: Anatomy of caudal weapon osteoderms in Stegouros elengassen gen. et

sp. nov CPAP-3165 and Antarctopelta oliveroi MLP 86-X-28-1. a, b Stegouros elengassen caudal weapon cross section (at level of first osteoderm pair and 14th caudal vertebra) in anterior and left lateral views. c, d, Antarctopelta oliveroi dorsal osteoderm of the first pair in left lateral and anterior views. e, Stegouros elengassen left second osteoderm in dorsal and internal views. f, Antarctopelta oliveroi left second osteoderm fragment in dorsal and internal views. g, i, Stegouros elengassen caudal weapon cross section (at level of second pair and 17th caudal vertebra) in anterior and posterior views. h, j, proposed configuration of the caudal weapon of Antarctopelta oliveroi in anterior and posterior views. Scale bars = 10 cm. cv, caudal vertebra; dos, dorsal

osteoderm; inc, inner concavity; k, keel; trp, transverse process; vos, ventral osteoderm.