Emausaurus ‭(‬Ernst-Moritz-Arndt-Universität lizard‭)

Short Info

Emausaurus ‭(‬Ernst-Moritz-Arndt-Universität lizard‭)

Phonetic : Em-oe-sore-us.

Named By : H.‭ ‬Haubold‭ ‬-‭ ‬1990

Diet : Herbivore

Size : Estimated 2.5 meters long

Type of Dinosaur : Armoured Dinosaur

Type Species : E.‭ ‬ernsti‭ (‬type‭)

Found in : Germany

When it Lived : Mid Jurassic, 190-180 million years ago

Emausaurus, a genus or armored dinosaur of the Early Jurassic (Early Toarcian), is one example. Its fossils have been found in Mecklenburg-Vorpommern, northern Germany. Emausaurus, the only Toarcian thyreophoran known to exist, is also the only dinosaur of the same age that has a formal name.

Harmut Haubold described and named the type and unique species E. ernsti in 1990. The acronym for Ernst Moritz Arndt University in Greifswald (lizard) is the generic name. The name Werner Ernst, a geologist, is the source of the specific name. He acquired the fossil, holotype SGWG85, from Werner Wollin in the summer 1963. It was found in strata from the Toarcian. It can be identified by the right side, lower jaw, caudal vertebrae and neural arches. A radius, a metatarsal and fragments of ribs are some of its most notable features.

Emausaurus was likely a semibipedal or quadrupedal animal. It was covered in an armor made of osteoderms all over its body. It was likely an herbivore like other thyreorphora. It was a low-dwelling one that ate ground flora such as Cycads or Bennnetitales, and it shared this diet with other thyreorphora. The holotype Emausaurus was approximately 2.5m in length and weighed 70-90kg. However, this was based only on a juvenile specimen. Adult lengths have been estimated at 3-4 m and a weight of up to 240kg. Although most of the reconstructions have been made using Scelidosaurus, it is possible that Emausaurus was more bipedal than some of the younger specimens of Scelidosaurus. The adult forms were probably more quadrupedal, hovewer. However, the type specimen is not complete enough to infer a mode for locomotion. Three conical scutes are included in armor, along with one tall, spiny component. David Norman compared the morphology and Emausaurus of Scelidosaurus in 2019. The Emausaurus maxilla is similar to the one in Scelidosaurus. Emausaurus’s disarticulated maxilla shows an anteromedially-directed robust process. It met its counterpart in midline and created a wedge-like structure with no offset between the alveolar margins. The structure of the frontals in Emausaurus is not well preserved. Its proportions are similar to those of Scelidosaurus in outline. However, this is also true for many Ornithischia. Although the Emausaurus lacrimal bone is not complete, it does include a long, curving jugal process which wraps itself around the anterior tip. There is not much information about the Emausaurus postcranium. Parts like a multipartite Odontoid (sutured at the axis centrum) are being recovered. Emausaurus is home to a number of Osteoderms assigned, but it lacks the’scapular Osteoderms’ like Scutellosaurus. The tail or dorsal sections seem to be the most important source of osteoderms.

Source: Wikipedia