...The late Miocene saw the second great radiation of the horse family, which expanded into grassland environments due to the global aridification. The body structure of the descendant of Parahippus, Merychippus , was more adapted to grassland life, but other species also appeared, such as the small Nannippus and Hipparion, and the large Pliohippus . Hipparion migrated from North America to Eurasia, replacing the forest-dwelling Anchitherium, and even advanced into the savannah environment, remaining in various places until the appearance of the one-toed Equus at the beginning of the following Quaternary Period. ... *Some of the terminology that mentions "Pliohippus" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…中新世の後期は,全世界的な乾燥化があり草原性の環境が拡大したが,それに伴ってウマ科の第2回の大放散が見られた。パラヒップスの子孫のメリキップスMerychippusの体の構造は,より草原生活へ適応しているが,このほか小型のナンニップスNannippusやヒッパリオン,大型のプリオヒップスPliohippusなどが出現している。ヒッパリオンは,北アメリカからユーラシアへ移動し,それまでの森林生活者のアンキテリウムと交代し,さらにサバンナの環境にまで進出し,次の第四紀の初めに,1指性のエクウスが出現するまで各地に残存していた。… ※「Pliohippus」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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