Stegosaurinae Marsh 1880

Stegosaurinae Marsh, 1880 (nomen cladi conversum) Registration number. 1098. Phylogenetic definition. The largest clade containing Stegosaurus stenops Marsh, 1887 but not Dacentrurus armatus Owen, 1875. This is a maximum-clade definition. Reference phylogeny. Figure 5 of this paper is designated as the primary reference phylogeny. Additional refence phylogenies include figure 3.14 of Carpenter et al. (2001), figure 16.11 of Galton and Upchurch (2004), figure 8 of Maidment et al. (2006), figure 3 of Escaso et al. (2007 a), figure 11 A and 12 A of Maidment et al. (2008), figure 1 of Mateus et al. (2009), figure 1 of Maidment (2010), figure 1 and 2 of Raven and Maidment (2017), figure 6 A of Hao et al. (2018), figure 12 of Maidment et al. (2020), figure 8 of Dai et al. (2022), figure 6 of Jia et al. (2024), figure 15 of Li et al. (2024 a), figure 8 of Li et al. (2024 b), figure 7 of Li et al. (2024 c), and figure 12 of Zafaty et al. (2024). Composition. According to the primary reference phylogeny, the clade Stegosaurinae comprises Lo. priscus, He. mjosi, S. stenops, J. junggarensis, W. homheni, and Ya. ultimus. Comments. Stegosaurinae was first (informally) defined by Sereno (1998). Sereno (2005) defined Stegosaurinae applying the maximum-clade definition and using S. stenops as the internal specifier and D. armatus as the external specifier. This definition is formalized using the same type of definition and specifiers. Note that Raven et al. (2023) re-defined (informally) Stegosaurinae using Stegosaurus and Hesperosaurus Carpenter, Miles, and Cloward, 2001 as internal specifiers and a minimum-clade definition. There is no reason for its redefinition and makes it is less suitable. In fact, some authors have proposed the genus Hesperosaurus as a subjective junior synonym of Stegosaurus. Therefore, the ‘ traditional concept’ of Stegosaurinae is retained. Figure 5 of this paper has been designated as the primary reference phylogeny because it considers the latest taxonomic revisions, includes the highest number of stegosaurian OTUs, and provides a high-resolution topology.