棘螈属(学名:Echinotriton)是有尾目蝾螈科的一属,分布在东亚地区。目前本属仅确定3种。[1]
特征
棘螈物种头躯明显宽扁,无唇褶,舌呈亚卵圆形,前后粘连。尾细弱而短,明显短于头体长,末端呈杆状。犁骨齿列呈“∧”形,前额骨2枚甚短。鼻突短,鼻骨大,左右相触。额鳞弧粗壮,方骨及翼骨与上颌骨相接触面大而牢固。最主要的属征是方骨后外侧有1个向前弯曲的钩状突;前若干枚肋骨各有1个强大之肋突,成分叉状,末端刺入瘰疣中或突出皮肤。成体营陆栖生活,幼体在静水中生活,有1对平衡枝,当年完成变态。[2]
種類
參考
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