具体表现为奇蹄类、偶蹄类、长鼻类 (Proboscidea)、啮齿类(Rodentia)、灵长类(Primates)、鳍脚类(Pinnipedia) 的祖先均在此时出世。雷兽超科(Brontotherioidea)在本阶段演化迅速,具有生 物地层学的重大意义。
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pinniped » 鳍足类动物 passed through. » 经过; 通过 经过; 通过 .
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同义词: pinniped mammal pinnatiped
以上来源于: WordNet
ADJ of, relating to, or belonging to the Pinnipedia, an order of aquatic placental mammals having a streamlined body and limbs specialized as flippers: includes seals, sea lions, and the walrus 鳍脚亚目动物的
N any pinniped animal 鳍脚亚目动物
The legs were strong and ended in long feet very much like those of a modern pinniped.
它的后肢很强壮,底部有长足,非常像现在的鳍足类动物。
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