anameghinornithidlikebirdavescariamaeameghinornithidaefromthemiddleeoceneofneimongolchina

	anameghinornithidlikebirdavescariamaeameghinornithidaefromthemiddleeoceneofneimongolchina
	Thomas Stidham A; Wang Yuanqing
刊名	古脊椎动物学报
	2017
卷号	55 期号:3 页码:218
ISSN号	1000-3118
英文摘要	A new fossil specimen from the early Middle Eocene of an Irdin Manha Formation equivalent (Erden Obo Section) in Nei Mongol (Inner Mongolia), China appears to be derived from an ameghinornithid-like species, and may represent the first record of the Ameghinornithidae in Asia. This new specimen exhibits the subcircular lateral condyle outline, the absence of an ossified supratendinal bridge, an enlarged flattened tubercle lateral to the extensor sulcus, and other features shared among known ameghinornithid and ameghinornithid-like birds. The Nei Mongol fossil is roughly contemporaneous with the oldest records of the ameghinornithids from Europe (~48 Ma). The absence of this group of birds from North America, and their occurrence in Europe and Asia during the Eocene contrasts with the contemporaneous Nei Mongol mammalian fauna that is comprised largely of Asian taxa with a few distinct linkages to North America. Along with the record of an ameghinornithid-like bird from the early Oligocene deposits of the Fayum area in Egypt, it seems that this extinct bird group had a much larger geographic distribution than previously recognized.
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/13633]
专题	中国科学院古脊椎动物与古人类研究所
作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Thomas Stidham A,Wang Yuanqing. anameghinornithidlikebirdavescariamaeameghinornithidaefromthemiddleeoceneofneimongolchina[J]. 古脊椎动物学报,2017,55(3):218.
APA	Thomas Stidham A,&Wang Yuanqing.(2017).anameghinornithidlikebirdavescariamaeameghinornithidaefromthemiddleeoceneofneimongolchina.古脊椎动物学报,55(3),218.
MLA	Thomas Stidham A,et al."anameghinornithidlikebirdavescariamaeameghinornithidaefromthemiddleeoceneofneimongolchina".古脊椎动物学报 55.3(2017):218.