Another small primitive bird about 33 centimetres in length.

又一种小型原始鸟，长度约33厘米。

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Archaeopteryx, supposedly the oldest and most primitive bird on Earth, might not have been a bird after all, scientists say.

科学家们说，据称是地球上最古老最原始的鸟类的“始祖鸟”可能根本就不是一只鸟。

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The fossil was a primitive bird the size of a crow that may have been asphyxiated by volcanic fumes as it wheeled above the lakes all those millions of years ago.

化石中的生物是一种和乌鸦体型相仿的原始鸟类，当它在湖面上盘旋时，突然袭来的火山灰使其窒息而亡。

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