Isaberrysaura: close to Stegosaurus in the LRT

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.

Figure 1. Isaberrysaura bones and diagram from Salgado et al. 2017. Colors added. Long-legged bipedal restoration is the original.

Figure 1. Isaberrysaura bones and diagram from Salgado et al. 2017. Colors added. Long-legged bipedal restoration is the original, revised here to more closely match Stegosaurus.

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).

Figure 3. Jurrasic Park 4 giant Stegosaurus (above, highlighted by Photoshop) and to scale with President Obama (below).

Figure 3. Jurrasic Park 4 giant Stegosaurus (above, highlighted by Photoshop) and to scale with President Obama (below).

Figure 3. Subset of the LRT focusing on Ornithischia.

Figure 3. Subset of the LRT focusing on Ornithischia. A few taxa have shifted since several years ago.

References
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

 

2 thoughts on “Isaberrysaura: close to Stegosaurus in the LRT

  1. A paper by Han et al. (2018) had already recovered Isaberrysaura as a thyreophoran.

    Ref: Fenglu Han; Catherine A. Forster; Xing Xu; James M. Clark (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

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