Xuanhanosaurus

Xuanhanosaurus
Temporal occurrence
	Middle Jurassic ( Bathonian to Callovian )
	168.3 to 163.5 million years
Locations
	China;
Systematics
	Ornithodira
	Dinosaur (dinosauria)
	Lizard dinosaur (Saurischia)
	Theropoda
	Tetanurae
	Xuanhanosaurus
Scientific name
	Xuanhanosaurus
	Dong , 1984
Art
	Xuanhanosaurus qilixiaensis;

Xuanhanosaurus (means "lizard of Xuanhano") is a genus of theropod dinosaur that lived in the Middle Jurassic . It was first described by the Chinese paleontologist Dong Zhiming in 1984. The only known species is Xuanhanosaurus qilixiaensis .

Xuanhanosaurus was about six meters long and weighed about 250 kilograms . What is striking about this carnivore is that it had particularly long and strong arms . This fact led Dong to suspect that he might have moved four-legged . However, most scientists today believe that he walked on two legs more like all other theropods .

Its fossils were found in the Dashanpu dinosaur site within the Xiashaximiao Formation in the Chinese province of Sichuan in rocks that were around 168 to 163 million years old.

With regard to the systematics , Dong Xuanhanosaurus assigned to the family Megalosauridae . More recent views from 2004 assume that it belongs directly to the Tetanurae , such as Hotz , Molnar and Currie .

Individual evidence

^ Gregory S. Paul : The Princeton Field Guide To Dinosaurs. Princeton University Press, Princeton NJ 2010, ISBN 978-0-691-13720-9 , p. 86, online .
↑ ^a ^b ^c ^d Dong Zhiming : A new theropod dinosaur from the Middle Jurassic of Sichuan Basin. In: Vertebrata PalAsiatica. Vol. 22, No. 3, 1984, ZDB -ID 2485763-4 , pp. 213-218, digitized version (PDF; 882.11 KB) .
↑ Thomas R. Holtz , Ralph E. Molnar, Philip J. Currie : Basal Tetanurae. In: David B. Weishampel , Peter Dodson , Halszka Osmólska (eds.): The Dinosauria . 2nd edition. University of California Press, Berkeley CA et al. 2004, ISBN 0-520-24209-2 , pp. 71-110, doi : 10.1525 / california / 9780520242098.003.0006 .

Web links

Commons : Xuanhanosaurus - collection of images, videos and audio files

[paul_10-1] Gregory S. Paul : The Princeton Field Guide To Dinosaurs. Princeton University Press, Princeton NJ 2010, ISBN 978-0-691-13720-9 , p. 86, online .

[Dong_1984-2] Dong Zhiming : A new theropod dinosaur from the Middle Jurassic of Sichuan Basin. In: Vertebrata PalAsiatica. Vol. 22, No. 3, 1984, ZDB -ID 2485763-4 , pp. 213-218, digitized version (PDF; 882.11 KB) .

[3] Thomas R. Holtz , Ralph E. Molnar, Philip J. Currie : Basal Tetanurae. In: David B. Weishampel , Peter Dodson , Halszka Osmólska (eds.): The Dinosauria . 2nd edition. University of California Press, Berkeley CA et al. 2004, ISBN 0-520-24209-2 , pp. 71-110, doi : 10.1525 / california / 9780520242098.003.0006 .