Yimenosaurus ‭(‬Yimen lizard‭)

Short Info

Yimenosaurus ‭(‬Yimen lizard‭)

Phonetic : Yi-men-o-sore-us.

Named By : Z.‭ ‬bai,‭ ‬J.‭ ‬Yang‭ & ‬G.‭ ‬Wang‭ ‬-‭ ‬1990

Diet : Herbivore

Size : Estimated 9 meters long

Type of Dinosaur : Sauropod

Type Species : Y.‭ ‬youngi‭ (‬type‭)

Found in : China,‭ ‬Yimen‭ ‬-‭ ‬Fengjiahe Formation

When it Lived : Early Jurassic, 195-190 million years ago

Yimenosaurus (meaning “Yiman reptile”) is an extinct genus belonging to plateosaurid sauropodomorph dinosaurs which was found in China during the Early Jurassic. The genus was named in the year 1990 in the work of Ziqi Bai Jie Yang, and Guohui Wang together with the only species of its kind, Yimenosaurus youngi. The name of the species honors famous Chinese paleontologist Yang Zhongjian, the father of Chinese paleontology, also known as C.C. Young in English. The most well-known material is the holotype which has an near-complete skull, mandible and also incomplete cervical as well as dorsal vertebrae an almost complete sacrum as well as an ilium, an ischia, partially ribs, and a the complete femur. There is also an unidentified paratype, which is a well-preserved postcrania, with a fragmentary skull. In 2010, Paul measured its size at 9 meters (30 feet) with a weight of 2 tons (2.2 small tons).

Two specimens have been identified, Yimenosaurus is relatively complete for the type of sauropodomorph it is. The specimens were first described in the year 1990 by Ziqi Bai, Jie Yang and Guohui Wang The authors called them the complete binomial Yimenosaurus youngi. Bai et al. developed the name of the genus Yimen county, which is the site where the discovery took place of the species in Yunnan Province, and the Latin word saurus which translates to “reptile”. It was chosen to honor Yang Zhongjian, the father and the founder of Chinese paleontology. Yang Zhongjian was well-known for his research in the field of “prosauropods”, and called in English C.C. Young. Of the two specimensavailable, the holotype was selected because it has a larger skull. The Holotype, YXV 8701, is recognized as having a complete skull and mandible, but it is missing the anterior part of the jaw, and tiny fragments of bone surrounding the orbit, in addition to the postcranial components of dorsal and cervical vertebrae as well as all sacral vertebrae, an ilium, two ischias, a fully femur, and insufficient broken ribs. The paratype, YXV8702 is identified as having only an skull that is missing, a large number of dorsal and cervical vertebrae, three sacrals, a handful of vertebrae in the caudal region, a scapula- as well as a whole pelvis and nearly the entire hindlimbs. The entire collection was found in the Fengjiahe Formation.

Source: Wikipedia