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Bohaiornithidae is a group of early enantiornithine birds from the early Cretaceous Period of China. All known specimens come from the Jiufotang Formation and Yixian Formation, dating to the early Aptian age, 125-120 million years ago.〔 Bohaiornithidae was first coined as a family of enantiornithean birds by Wang and colleagues in 2014. They defined it as the natural group formed by all descendants of the common ancestor of the type species, ''Bohaiornis guoi'', and ''Shenqiornis mengi''.〔Wang M., Zhou Z.-H., O’Connor, J.K., and Zelenkov, N.V. (2014) (A new diverse enantiornithine family (Bohaiornithidae fam. nov.) from the Lower Cretaceous of China with information from two new species ). ''Vertebrata PalAsiatica'', 52(1): 31-76.〕 The cladogram below was found in the phylogenetic analysis of Wang ''et al.'' 2014, which itself was an updated version of O’Connor ''et al.'' 2013.〔O’Connor, J.K. Zhang, Y. Chiappe, L.M. Meng, Q. Quanguo, L. & Di, L. (2013) (A new enantiornithine from the Yixian Formation with the first recognized avian enamel specialization ). ''Journal of Vertebrate Paleontology'' 33(1):1-12.〕 The cladogram is based on a data matrix that includes 56 avialaen taxa, scored based on 262 morphological traits.〔 }} |2= }} |label2=Eoenantiornithiformes |2= }} }} }} }} }} }} }} }} }} == 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「Bohaiornithidae」の詳細全文を読む スポンサード リンク
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