Cathayornis

Cathayornis , syn. Sinornis
	Cathayornis , syn. Sinornis
Temporal occurrence
	Lower Cretaceous
	120 to 100 million years
Locations
	Jiufotang Formation , Liaoning ( People's Republic of China );
Systematics
	Birds (aves, avialae)
	Pygostylia
	Enantiornithes
	Cathayornithidae
	Cathayornis , syn. Sinornis
Scientific name
	Cathayornis , syn. Sinornis
	Zhou , Jin & Zhang , 1992 and Sereno & Rao , 1992
Art
	Cathayornis yandica Zhou , Jin & Zhang , 1992 and Sinornis santensis Sereno & Rao , 1992;

Cathayornis ( Syn .: Sinornis ) is a fossil bird from the group of the enantiornithes . Several described finds were made in the Jiufotang Formation Liaonings in the northeast of the People's Republic of China . The age of the Jiufotang formation is according to Carl Swisher et al. a. (1999) given as 120 to 100 million years . The word creation Cathayornis is derived from the ancient English word Cathay as a name for China and the ancient Greek όρνις (ornis) for bird.

The question of the correct naming has still not been resolved. Zhou and Hou (2001) differentiate Cathayornis from Sinornis on the basis of the following essential features:

Cathayornis is bigger
his first finger is longer and straighter
he has no atitrochanter

You have given Cathayornis the species name Cathayornis yandica .

Paul Sereno and others (2001) see Cathayornis only as a synonym (second description) of Sinornis . For them the anatomical structure of the two is very similar, for example both forms have the same central autapomorphism of the pygostyle. You gave Sinornis the species name Sinornis santensis .

After Cathayornis fossil was Avifauna in the Jiufotang Formation named, called Cathayornis-Chaoyangia-Avifauna .
The following bird species are represented in it:

Cathayornis yandica or Sinornis santensis
Chaoyangia beishanensis

such as:

Individual evidence

↑ Carl C. Swisher III, Yuan-Qing Wang, Xiao-Lin Wang, Xing Xu, Yuan Wang: Cretaceous age for the feathered dinosaurs of Liaoning, China. In: Nature . 400, No. 6739, 1999, pp. 58-61, doi : 10.1038 / 21872 .
↑ Zhong-He Zhou, Lianhai Hou: The Discovery and Study of Mesozoic Fossil Birds in China. In: Luis M. Chiappe, Lawrence M. Witmer (Eds.): Mesozoic Birds. Above the Heads of the Dinosaurs. University of California Press, Berkeley 2002, ISBN 0-520-20094-2 .
^ Paul Sereno, Rao Chenggang, Jianjun Li: Sinornis santensis (Aves: Enantiornithes) from the Early Cretaceous of Northeastern China. In: Luis M. Chiappe, Lawrence M. Witmer (Eds.): Mesozoic Birds. Above the Heads of the Dinosaurs. University of California Press, Berkeley 2002, ISBN 0-520-20094-2 .
↑ Zhonghe Zhou, Paul M. Barett, Jason Hilton: An exceptionally preserved Lower Cretaceous ecosystem. In: Nature. 421, No. 6925, 2003, pp. 807-814, doi : 10.1038 / nature01420 .

[1] Carl C. Swisher III, Yuan-Qing Wang, Xiao-Lin Wang, Xing Xu, Yuan Wang: Cretaceous age for the feathered dinosaurs of Liaoning, China. In: Nature . 400, No. 6739, 1999, pp. 58-61, doi : 10.1038 / 21872 .

[Zhou&Hou2001-2] Zhong-He Zhou, Lianhai Hou: The Discovery and Study of Mesozoic Fossil Birds in China. In: Luis M. Chiappe, Lawrence M. Witmer (Eds.): Mesozoic Birds. Above the Heads of the Dinosaurs. University of California Press, Berkeley 2002, ISBN 0-520-20094-2 .

[Serenoetal2001-3] Paul Sereno, Rao Chenggang, Jianjun Li: Sinornis santensis (Aves: Enantiornithes) from the Early Cretaceous of Northeastern China. In: Luis M. Chiappe, Lawrence M. Witmer (Eds.): Mesozoic Birds. Above the Heads of the Dinosaurs. University of California Press, Berkeley 2002, ISBN 0-520-20094-2 .

[Zhouetal2003-4] Zhonghe Zhou, Paul M. Barett, Jason Hilton: An exceptionally preserved Lower Cretaceous ecosystem. In: Nature. 421, No. 6925, 2003, pp. 807-814, doi : 10.1038 / nature01420 .