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English

Jennifer A. Clack interprets this as showing that Acanthostega was primarily an aquatic animal descended from fish that never left the sea, and that the specializations in the tetrapod lineage developed features which would later be useful for terrestrial life.

Chinese

詹妮弗·克拉克(Jennifer A. Clack)解釋棘螈是演化自從未離開海洋的魚類,四足總綱後來衍生了對陸地生活非常有用的特徵,而非以往推測的在陸地上拖行身體再演化出四肢。