Widely distributed fast-moving ten-armed cephalopod mollusk having a long tapered body with triangular tail fins. 广泛分布的十肢头足类动物,游动迅速,身体长而尖,有三角形尾鳍。
Cephalopod mollusk of warm seas whose females have delicate papery spiral shells. small class of bilaterally symmetrical marine forms comprising the tooth shells. 温暖海洋中的头足类软体动物,雌性有精致的象纸一样的螺旋状壳。由两边对称的海洋掘足纲软体动物组成的一个小纲。