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Enantiornis
''Enantiornis'' is a genus of enantiornithine birds. The type and only currently accepted species ''E. leali'' is from Late Cretaceous rocks at El Brete, Argentina.〔Walker, C.A. (1981) (New subclass of birds from the Cretaceous of South America ). ''Nature'' 292:51–53.〕 They are among the largest enantiornithine birds discovered to date, with a length in life of around one meter (excluding tail) and its ecological niche resembled that of a mid-sized vulture or eagle. ''E. leali'' was possibly fairly closely related to ''Avisaurus'', another genus of probably carnivorous enantiornithines, though its exact relationship is unclear. It is placed in a family of its own, Enantiornithidae. Other species from Asia that were previously placed in this genus are now split off. The former ''Enantiornis martini'' is now placed in ''Incolornis'', while the former ''Enantiornis walkeri'' is now tentatively assigned to ''Explorornis''. The reasons for this are that these birds were described when the diversity of enantiornithine birds was underestimated. ==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「Enantiornis」の詳細全文を読む
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