Yixian Ornis

Yixian Ornis
	The holotype in the Chinese Paleozoological Museum .
Temporal occurrence
	Lower Cretaceous
	~ 120 million years
Locations
	Jiufotang formation in Liaoning ( People's Republic of China );
Systematics
	Birds (aves)
	Pygostylia
	Ornithurae
	Yanornithiformes
	Songlingornithidae
	Yixian Ornis
Scientific name
	Yixian Ornis
	Zhou & Zhang , 2001
Art
	Yixianornis grabaui Zhou & Zhang, 2001;

Yixianornis (义县鸟 ) is an extinct bird - genus from the Lower Cretaceous . Remains were found in the Jiufotang Formation near Chaoyang ( People's Republic of China ) and may therefore come from the lower Aptium (~ 120 Ma BP). Only one species is known to date , Yixianornis grabaui .

etymology

The word creation Yixianornis is derived from Yixian , literally Yi circle ( Chinese 义县 , Pinyin Yìxìan ), with the Yixian formation named after it and the ancient Greek όρνις (ornis) for bird. The species name grabaui goes back to the American paleontologist Amadeus William Grabau , who carried out field surveys in China in the early 20th century.

Systematics

Yixianornis was a close relative of Yanornis and Songlingornis . These three genera together form a taxon within early modern birds. They are very primitive birds, but already have an essentially modern pygostyle with a fan of tail feathers.

Individual evidence

↑ Julia A. Clarke, Zhonghe Zhou, Fucheng Zhang: Insight into the evolution of avian flight from a new clade of Early Cretaceous ornithurines from China and the morphology of Yixianornis grabaui. In: Journal of Anatomy . Volume 208, No. 3, 2006, pp. 287-308.

swell

Julia A. Clarke, Zhonghe Zhou, Fucheng Zhang: Insight into the evolution of avian flight from a new clade of Early Cretaceous ornithurines from China and the morphology of Yixianornis grabaui. In: Journal of Anatomy. Volume 208, No. 3, 2006, pp. 287-308, doi : 10.1111 / j.1469-7580.2006.00534.x .
Michael Mortimer: The Theropod Database: Phylogeny of taxa ( Memento of March 27, 2007 in the Internet Archive ). 2004, Retrieved October 29, 2007.

Web links

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

[Clarkeetal2006-1] Julia A. Clarke, Zhonghe Zhou, Fucheng Zhang: Insight into the evolution of avian flight from a new clade of Early Cretaceous ornithurines from China and the morphology of Yixianornis grabaui. In: Journal of Anatomy . Volume 208, No. 3, 2006, pp. 287-308.