Emausaurus is a genus of thyreophoran or armored dinosaur from the Early Jurassic (Early Toarcian). Its fossils have been found in Mecklenburg-Vorpommern, northern Germany. Emausaurus is the only known Toarcian thyreophoran, as well as the only dinosaur from the zone of the same age with a formal name. Discovery and naming The type and only species, E. ernsti, was named and described by Harmut Haubold in 1990. The generic name is composed of an acronym of Ernst Moritz Arndt University of Greifswald and the Greek / (lizard). The specific name is derived from the name of geologist Werner Ernst, who acquired the holotype specimen, SGWG 85, in the summer of 1963 from foreman Werner Wollin at a loampit near Grimmen, in strata dating from the Toarcian. It is known by the right side of the skull, the right lower jaw, caudal vertebrae, neural arches, a radius, a metatarsal, a claw, fragments of ribs, scutes, and plates, known as EMAU SGWG 85. Description Emausaurus was probably a semibipedal to quadrupedal animal, being covered in an armor of osteoderms across the body. Like other thyreorphorans, it probably was an herbivore, specifically a low dwelling one, with a diet associated with ground flora, such as cycads and Bennettitales. The body length of the holotype juvenile individual of Emausaurus has been estimated at , with a body mass of . The adult length has been estimated at , with a body mass up to . Some recent data suggest the holotype may be from a subadult rather than a juvenile. Most of the reconstruction has been based on Scelidosaurus, although it is possible that Emausaurus was a more bipedal animal, as some of the young specimens of Scelidosaurus were thought to be. Adult forms probably were more quadrupedal. Unfortunately, the type specimen is too incomplete to infer a mode of locomotion. Armor includes three conical scutes and one tall, spiny element. In 2019, David Norman examined the morphology of Scelidosaurus, comparing it with Emausaurus. In Emausaurus, the maxilla has, overall, a similar morphology to that seen in Scelidosaurus. The disarticulated maxilla of Emausaurus exhibits an anteromedially directed robust process with which it met its counterpart in the midline, creating a wedge-like structure, with no obvious offset between the alveolar margins. In Emausaurus, the structure of the frontals is not well preserved. In outline, its proportions resemble those of Scelidosaurus, but the same is true