山椒鱼
山椒鱼是两栖纲有尾目隐鳃鲵亚目（Cryptobranchoidea）动物的总称，虽名鱼，并非鱼类。曾与恐龙并存，较恐龙早1亿年出现，在地球存活了3亿年，是现存世上少有的活化石之一。
该亚目包括大鲵（大山椒鱼，亦称娃娃鱼）和小鲵（山椒鱼），除了隐鳃鲵（美洲大鲵 Cryptobranchus alleganiensis）一种以外，其余所有的山椒鱼都分布于亚洲。
Cryptobranchoidea
中文百科
英语百科
Cryptobranchoidea 山椒鱼
The Cryptobranchoidea are a suborder of salamanders found in the eastern United States, China, ******, and Japan. They are known as primitive salamanders, in contrast to Salamandroidea, or advanced salamanders.
Some species of the fully aquatic Cryptobranchidae family are known as giant salamanders due to their large size.
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