Sinocoelurus

Sinocoelurus; Temporal range: Upper Jurassic, 160 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Tooth
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Order:	Saurischia
Suborder:	Theropoda
Genus:	†Sinocoelurus; Yang, 1942
Binomial name
	†Sincoelurus fragilis; Yang, 1942

Sinocoelurus (meaning "Chinese hollow tail", in reference to location and to relate the new genus to the North American Coelurus) is a genus of theropod dinosaur from the Oxfordian-?Tithonian-age Upper Jurassic Kyangyan Series of Sichuan, China. It is an obscure tooth taxon.

History

Famous Chinese paleontologist Yang Zhongjian (in older references his name is given as C. C. Young) named this genus from IVP AS V232-234, a group of four isolated partial teeth found near Weiyuan, Guangyuan, Sichuan Basin. He described them as "long, slender, moderately curved and compressed; ridged anterior and posterior sides with no trace of serrations; enamel very thin".[1] He considered the genus to be "coelurosaurian", which at that time meant a small theropod. The most distinctive characteristic of these teeth was their lack of serrations.[2]

Because of the small amount of material, Sinocoelurus has attracted little attention since its description, outside of reviews. It is usually considered a dubious name of either coelurosaurian\coelurid affinities (if the source predates the acceptance of Coelurosauria as a wastebasket taxon as traditionally used), or uncertain theropod affinities (if published after this). The most recent review classifies it as Tetanurae incertae sedis and dubious.[3]

Paleobiology

As a small theropod, Sinocoelurus would have been an agile, bipedal carnivore.

Miscellany

Due to romanization variations, the location may be given as Kuangyuan, Szechuan Basin.

References

Glut, D.F. (1997). "Sinocoelurus". Dinosaurs: The Encyclopedia. McFarland & Company. p. 825. ISBN 978-0-89950-917-4.
Yang Zhongjian. (1942). Fossil vertebrates from Kuangyuan, N. Szechuan, China. Bulletin of the Geological Society of China 22(3-4):293-309.
Holtz Jr.; T.R., Molnar, R.E & Currie, P.J. (2004). "Basal Tetanurae". The Dinosauria (second ed.). University of California Press. pp. 71–110. ISBN 978-0-520-24209-8.CS1 maint: multiple names: authors list (link)

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[Glut97-1] Glut, D.F. (1997). "Sinocoelurus". Dinosaurs: The Encyclopedia. McFarland & Company. p. 825. ISBN 978-0-89950-917-4.

[Yang42-2] Yang Zhongjian. (1942). Fossil vertebrates from Kuangyuan, N. Szechuan, China. Bulletin of the Geological Society of China 22(3-4):293-309.

[Holtz04-3] Holtz Jr.; T.R., Molnar, R.E & Currie, P.J. (2004). "Basal Tetanurae". The Dinosauria (second ed.). University of California Press. pp. 71–110. ISBN 978-0-520-24209-8.CS1 maint: multiple names: authors list (link)