Xixiposaurus

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Xixiposaurus
Temporal range: Early Jurassic, 201–183  Ma
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Sauropodomorpha
Genus: Xixiposaurus
Sekiya, 2010
Species:
X. suni
Binomial name
Xixiposaurus suni
Sekiya, 2010

Xixiposaurus (meaning "Xixipo lizard") is a genus of "prosauropod" dinosaur which existed in what is now Lower Lufeng Formation, China during the lower Jurassic period. [1] It was first named by Sekiya Toru in 2010 and the type species is X. suni. [1]

Contents

Etymology

The generic name, Xixiposaurus, refers to the village of Xixipo in Lufeng County, Yunnan, China, where the holotype, a partial skeleton with skull named ZLJ01018, was discovered. The specific name, suni, refers to Professor Sun Ge of Jilin University. [1]

Classification

Sekiya (2010)'s phylogenetic analysis places Xixiposaurus as a derived member of a monophyletic Prosauropoda, a hypothesis that is currently unaccepted. It is placed as the sister taxon to Mussaurus in a family Plateosauridae, which also included Riojasaurus , Coloradisaurus , and " Gyposaurus " sinensis . [1]

Related Research Articles

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<i>Jingshanosaurus</i> Extinct genus of dinosaurs

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Phyllodontosuchus is a genus of sphenosuchian, a type of basal crocodylomorph, the clade that comprises the crocodilians and their closest kin. It is known from a skull and jaws from Lower Jurassic rocks of Yunnan, China. Phyllodontosuchus is unusual because some of its teeth were leaf-shaped, like those of some herbivorous dinosaurs, and it does not appear to have been a strict carnivore like most other crocodylomorphs.

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Chuxiongosaurus is a genus of basal sauropodomorph dinosaur which lived during the Early Jurassic Period. Fossils of this genus have been found in the Lower Lufeng Formation, Yunnan Province, southern China. Identified from the holotype CMY LT9401 a nearly complete skull with some similarities to Thecodontosaurus, it was described as the "first basal sauropod dinosaur from the Early Jurassic of China," more basal than Anchisaurus. It was named by Lü Junchang, Yoshitsugu Kobayashi, Li Tianguang and Zhong Shimin in 2010, and the type species is Chuxiongosaurus lufengensis. It is a possible junior synonym of Jingshanosaurus.

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Shuangbaisaurus is genus of theropod dinosaur, possibly a junior synonym of Sinosaurus. It lived in the Early Jurassic of Yunnan Province, China, and is represented by a single species, S. anlongbaoensis, known from a partial skull. Like the theropods Dilophosaurus and Sinosaurus,Shuangbaisaurus bore a pair of thin, midline crests on its skull. Unusually, these crests extended backwards over the level of the eyes, which, along with the unusual orientation of the jugal bone, led the describers to name it as a new genus. However, Shuangbaisaurus also possesses a groove between its premaxilla and maxilla, a characteristic which has been used to characterize Sinosaurus as a genus. Among the two morphotypes present within the genus Sinosaurus, Shuangbaisaurus more closely resembles the morphotype that is variably treated as a distinct species, S. sinensis, in its relatively tall skull.

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References

  1. 1 2 3 4 SEKIYA Toru (2010). "A new prosauropod dinosaur from Lower Jurassic in Lufeng of Yunnan". Global Geology. 29 (1): 6–15. doi:10.3969/j.issn.1004-5589.2010.01.002.