of many Ornithischia. The lacrimal bone of Emausaurus is incomplete, but includes a long, curved jugal process that evidently wrapped itself around the anterior tip of the jugal. Very little is known of the postcranium Emausaurus, recovering parts like a multipartite odontoid (sutured to the axis centrum), similar to that of Scelidosaurus. Emausaurus has a series of assigned osteoderms, but lacks like Scutellosaurus 'scapular osteoderms'. The major series of osteoderms found appear to come from the tail or the dorsal section. Classification Cladistic analyses have shown that Emausaurus was a basal member of the Thyreophora, more derived than Scutellosaurus, but less than Scelidosaurus. Scelidosaurus, Emausaurus, and Scutellosaurus cluster at the base of most trees because they can be scored for only a restricted number of anatomical characters. The cladistic status of the specimen is relatively controversial due to its young nature. It is clearly a member of the Thyreophora, but its position may be modified if an adult specimen is found. Emausaurus may be more derived than Scelidosaurus, or even be a sister taxon to Stegosauria. The general consensus has established Emausaurus as a non-eurypodan stem thyreophoran, along with Scutellosaurus and Scelidosaurus reinforced by almost all subsequent systematic reviews of ornithischian–thyreophoran relationships. Being Emausaurus and Scutellosaurus more basal than Scelidosaurus. Emausaurus has been put on an outgroup to Ankylosauria, with Scelidosaurus and the basal stegosaur Huayangosaurus. Vickaryous et al. (2004), did the default phylogenetic analysis for ingroup ankylosaurs, due to including cranial and postcranial characters, a wide range of taxa and made no in-group relationships, although this analysis used the holotype Lesothosaurus and Huayangosaurus as outgroups, ignoring Scelidosaurus and Emausaurus. In 2020, Norman found that Scelidosaurus, along with Scutellosaurus and Emausaurus, are positioned on the stem of Ankylosauria, rather than on the stem of Thyreophora, with Emausaurus as the basal sister-taxon to Scelidosaurus. This is because Emausaurus possesses a dorsal margin of the dentary sinuous in lateral view and neither elongated nor squat proportions of metacarpal 1 'medium'. Alternatively, Emausaurus may be a basal sister-taxon to Scutellosaurus, but taking the similarities between Emausaurus and Scelidosaurus this is less likely. Yet this was contested the same year with the description of +70 specimens of Scutellosaurus, where Emausaurus was found as sister taxon of this last one and both with strong evidence for a phylogenetic placement within Thyreophora but outside of Thyreophoroidea. A cladogram following the results of Norman (2020) is shown