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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Vertebrate land invasion ： ウィキペディア英語版 Vertebrate land invasion The aquatic to terrestrial transition of vertebrate organisms occurred in the late Devonian era and was an important step in the evolutionary history of modern land vertebrates. The transition allowed animals to escape competitive pressure from the water and explore niche opportunities on land. Fossils from this period have allowed scientists to identify some of the species that existed during this transition, such as Tiktaalik and Acanthostega. Many of these species were also the first to develop adaptations suited to terrestrial over aquatic life, such as neck mobility and hindlimb locomotion. The late Devonian vertebrate transition was not the only terrestrial invasion in evolutionary history. The vertebrate transition was preceded by the plant and invertebrate terrestrial invasion. These invasions allowed for the appropriate niche development that would ultimately facilitate the vertebrate invasion. Furthermore, the late Devonian event is only significant in that it was the first land invasion by vertebrate organisms, and that it resulted in an explosion of vertebrate biodiversity due to the many different niches that these species were able to exploit. However, aquatic species have continued to develop adaptations suited to terrestrial life (and vice versa) from the late Devonian to the Holocene. == Overview of transition == The vertebrate species that were important to the initial water to land transition can be qualified as being one of five groups: Sarcopterygian fishes, prototetrapods, aquatic tetrapods, true tetrapods, and terrestrial tetrapods. Many morphological changes occurred throughout this transition. Mechanical support structures changed from fins to limbs, the method of locomotion changed from swimming to walking, respiratory structures changed from gills to lungs, feeding mechanisms changed from suction feeding to biting, and mode of reproduction changed from larval development to metamorphosis. 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「Vertebrate land invasion」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.