Two new ornithurine birds from the Early Cretaceous of western Liaoning, China

IVPP-IR > 中科院古脊椎所（2000年以后）

	Two new ornithurine birds from the Early Cretaceous of western Liaoning, China
	Zhou, ZH(周忠和); Zhang, FC(张福成); Zhou, ZH (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China.
	2001
发表期刊	CHINESE SCIENCE BULLETIN
ISSN	1001-6538
卷号	46 期号:15 页码:1258—1264
摘要	We describe two new ornithurine birds from the Early Cretaceous Jiufotang Formation of western Liaoning, northeast China: Yanornis martini gen. et sp. nov. and Yixianornis grabaui gen. et sp. nov. They represent the best fossil record of ornithurine birds known from the Early Cretaceous. They are more advanced than the most primitive ornithurine Liaoningornis, and are more similar to the other two Chinese Early Cretaceous ornithurines Chaoyangia and Songlingornis. Compared with Confuciusornis, Liaoxiornis and Eoenantiornis from the same age, the two new birds show remarkable advanced characteristics and suggest the presence of powerful flight capability like modern birds. Compared with Yixianornis and Chaoyangia, Yanornis is larger, with a more elongated skull and relatively long wings. The new discoveries indicate that by the Early Cretaceous both enantiornithine and ornithurine birds had already radiated significantly. The flight structures of Yanornis and Yixianornis are hardly distinguishable from those of modern birds; however, both retain a few primitive traits such as teeth on the jaws, wing claws and pubic symphysis, which exclude them from being the most recent ancestor of all extant birds.
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/3855
专题	中科院古脊椎所（2000年以后）
通讯作者	Zhou, ZH (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China.
推荐引用方式 GB/T 7714	Zhou, ZH,Zhang, FC,Zhou, ZH . Two new ornithurine birds from the Early Cretaceous of western Liaoning, China[J]. CHINESE SCIENCE BULLETIN,2001,46(15):1258—1264.
APA	Zhou, ZH,Zhang, FC,&Zhou, ZH .(2001).Two new ornithurine birds from the Early Cretaceous of western Liaoning, China.CHINESE SCIENCE BULLETIN,46(15),1258—1264.
MLA	Zhou, ZH,et al."Two new ornithurine birds from the Early Cretaceous of western Liaoning, China".CHINESE SCIENCE BULLETIN 46.15(2001):1258—1264.

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