…the name of a general term for a group of mammals belonging to the Platanistidae family, a group of toothed whales that live in rivers or coastal areas and have a primitive long snout. In the Miocene period of the Tertiary Period, they were known from the eastern and western coasts of both the Americas and Japan, and their distribution was wider than it is today. *Some of the terminology that mentions "Platanistidae" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…河川あるいは沿岸域に生息する吻(ふん)の長い原始的な特徴をとどめた歯クジラ類カワイルカ科Platanistidaeに属する哺乳類の総称。第三紀中新世には南・北両アメリカ大陸の東西岸や日本からも知られ,現在より分布が広かった。… ※「Platanistidae」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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