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Pengornis
''Pengornis'' is the largest known enantiornithine bird from the Early Cretaceous of northeast China. The name derives from "Peng", which refers to a mythological bird from Chinese folklore, and "-ornis", which means bird in Greek.
''Pengornis'' is known from a single adult fossil, described by Zhou et al. in 2008. This holotype is in the collection of the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing China. Its accession number is IVPP V15336. It was collected from the Jiufotang Formation, at Dapingfang, Chaoyang, Liaoning China. A second, juvenile specimen was described by Hu, Zhou, and O'Connor in 2014.
''Pengornis'' shows characters of the humeral head, acromion, and anterior cervical vertebrae, that were previously known only in members of the Ornithurae. A phylogenetic analysis by Zhou et al. reduces to just three the number of characters that support enantiornithine monophyly . Thus, Pengornis supports the possibility that enantiornithines and Ornithurines may not be distinct clades.〔"Insight into diversity, body size and morphological evolution from the largest Early Cretaceous enantiornithine bird" Zhonghe Zhou, Julia Clarke, Fucheng Zhang "Journal of Anatomy" (2008) 212, pp565–577. 〕
(see Apsaravis)
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Pengornis」の詳細全文を読む
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