Cryptobranchus alleghaniensis; hellbender
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Order: Hynobiidae, Family: Hynobiidae. Appearance is similar to the Japanese and Chinese giant salamanders, but even as adults they retain gill slits and have many bones inside them. These characteristics indicate that they retain more juvenile characteristics than their Asian counterparts. Their bodies are slightly smaller than the Asian species, with few exceeding 70 cm in total length. They are found in the eastern United States, and live in large rivers with relatively fast currents. They are aquatic throughout their lives. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
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サンショウウオ目オオサンショウウオ科。日本や中国のオオサンショウウオに外観は似ているが，成体になっても鰓孔が残り，その内側の骨の数も多い。これらの特徴は，アジアのものよりも多くの幼形性質を残していることを示すものである。体はアジアの種類よりやや小さく，全長が 70cmをこえるものは少い。アメリカ合衆国東部に分布し，比較的流れが速くて大きい川にすむ。一生を通じて水生。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
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