| 翻訳と辞書 |
Explorornis
''Explorornis'' ("discovered bird", from Latin ''explōrō'' "to discover" and Ancient Greek ''ornis'' (''όρνις'') "bird") is a genus of Mesozoic birds which lived during the mid-late Turonian stage, around 90 million years ago, in the Bissekty Formation of the Kyzyl Kum, in present-day Uzbekistan.〔Panteleev, 1998. New species of enantiornithines (Aves: Enantiornithes) from the Upper Cretaceous of Central Kyzylkum. Russkii Ornitologicheskii Zhurnal. Ekspress-vy.pvsk 35: 3-15.〕
''E. walkeri'' (specimen PO 4825) was originally placed in ''Enantiornis'', but the description of the type species ''E. nessovi'' (PO 4819), showed that it was not congeneric with the South American ''Enantiornis'', which makes far more sense considering biogeography and age. The two species are named after famous paleontologists: Lev Alexandrovich Nesov (1947–1995) and Cyril Alexander Walker.
These were all smallish birds, maybe 15–20 cm long in life, except ''E. walkeri'' which was probably more than 25 cm long.
Since only the coracoids are known, the phylogenetic position of these taxa is somewhat unresolved. They do resemble the more advanced Enantiornithes more than they do any other bird however. Confirmation of their placement with Euenantiornithes would still require more material however.
==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「Explorornis」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|