“That’s a big question now: What’s keeping the other frogs from developing real teeth on the lower jaw?” Dr. Wiens said.

恩斯博士说：“那是个大问题：什么才能促使其他蛙类在下颌继续长出正真的牙齿呢？”

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“It’s a very clear-cut case of re-evolution because of the large time span, ” said John Wiens, the Stony Brook biologist who authored the paper in the journal Evolution.

约翰.威恩斯说“因长时间跨度而促使物种重新进化，这是一个非常明确的事例。”他是斯托尼布鲁克分校生物学家，同时也签约日报进化栏作者。

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"It's a very clear-cut case of re-evolution because of the large time span," said John Wiens, the Stony Brook biologist who authored the paper in the journal evolution.

约翰·威恩斯说“因长时间跨度而促使物种重新进化，这是一个非常明确的事例。”他是斯托尼·布鲁克分校生物学家，同时也签约日报进化栏作者。

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"It's a very clear-cut case of re-evolution because of the large time span," said John Wiens, the Stony Brook biologist who authored the paper in the journal evolution.

约翰·威恩斯说“因长时间跨度而促使物种重新进化，这是一个非常明确的事例。”他是斯托尼·布鲁克分校生物学家，同时也签约日报进化栏作者。

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