Missed this one three years ago.
Salgado et. al 2017 documented a stegorsaur-like skull (Fig. 1) and some post-crania preserved with a gut full of seeds they named Isaberrysaura.
Originally this taxon was considered
a long-legged biped (Fig. 1), but here in the large reptile tree (LRT, 1747+ taxa), and elsewhere (Han et al. 2018), Isaberrysaura nests with Stegosaurus (Fig. 2).
Han F, Forster CA, Xu X and Clark JM 2018. Postcranial anatomy of Yinlong downsi (Dinosauria: Ceratopsia) from the Upper Jurassic Shishugou Formation of China and the phylogeny of basal ornithischians. Journal of Systematic Palaeontology. 16 (14): 1159–1187. [added after publication]
Salgado L et al. (6 co-authors) 2017. A new primitive Neornithischian dinosaur from the Jurassic of Patagonia with gut contents. Nature.com/scientificreports 7:42778 DOI: 10.1038/srep42778