Considered living fossils, frilled sharks bear many physical characteristics of ancestors who swam the seas in the time of the dinosaurs.
皱鳃鲨可以称得上是活化石了，在外形上还保留着许多它生活在恐龙时代海洋中的先祖的特征。
Considered living fossils, frilled sharks bear many physical characteristics of ancestors who swam the seas in the time of the dinosaurs.
皱鳃鲨可以称得上是活化石了，在外形上还保留着许多它生活在恐龙时代海洋中的先祖的特征。
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