50年前,三叶虫的眼睛让科学家们着迷

国际热点作者 / 花爷 / 2024-11-30 17:13
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摘自1974年2月2日出版的科学新闻 三叶虫的眼睛:早期进化中令人印象深刻的壮举——科学


摘自1974年2月2日出版的科学新闻

三叶虫的眼睛:早期进化中令人印象深刻的壮举——科学新闻,1974年2月2日

[三叶虫]拥有有史以来最复杂的眼睛镜片....这种晶状体结构与现代节肢动物中发现的任何结构都不相符,因为它是在三叶虫已经是一个独立物种并注定要灭绝的时候形成的....虽然大自然赋予了三叶虫这种伟大的视觉天赋,但没有办法知道三叶虫是否充分利用了它。

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Update

With some 20,000 known species, trilobites were a diverse bunch that went extinct about 250 million years ago. The lenses described in 1974, found in trilobites called phacopids, are similar in shape to some telescope lenses. That suggests phacopids could focus on objects near and far in their field of view. Recently, a fossil analysis has found that the creatures’ optical gift was even more spectacular than scientists thought. Phacopids appear to have had two compound eyes, like those of flies and other insects. But each eye contained up to 200 smaller peepers, which would have helped the trilobites detect light in dark ocean waters, researchers reported in 2021.

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A version of this article appears in the January 27, 2024 issue of Science News.

Cassie Martin is a deputy managing editor. She has a bachelor's degree in molecular genetics from Michigan State University and a master's degree in science journalism from Boston University.

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