例如一亿二千五百万年前存活在世的中华龙鸟种群，全身长满刚毛，科学家们从它们尾部的刚毛处发现存在有黑素体。
The 125-million-year-old species Sinosauropteryx, for example, has bristles on its skin, and scientists found melanosomes in the tail bristles.
例如一亿二千五百万年前存活在世的中华龙鸟种群，全身长满刚毛，科学家们从它们尾部的刚毛处发现存在有黑素体。
The 125-million-year-old species Sinosauropteryx, for example, has bristles on its skin, and scientists found melanosomes in the tail bristles.
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