Some trilobites had eyes with telescope-like lenses and that had been stuffed with masses of miniature eyes.
Brigitte Schoenemann
Trilobite eyes: An excellent feat of early evolution — Science Information, February 2, 1974
[Trilobites] possessed probably the most refined eye lenses ever produced…. The lens construction does no longer correspond to any present in fashionable arthropods, because it advanced when trilobites had been already a separate inventory and doomed to extinction…. Despite the fact that the trilobites had been lavished by means of nature with this nice optical present, there is not any solution to know whether or not the trilobites made complete use of it.
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With some 20,000 recognized species, trilobites had been a various bunch that went extinct about 250 million years in the past. The lenses described in 1974, present in trilobites referred to as phacopids, are equivalent in form to a few telescope lenses. That means phacopids may just focal point on items close to and a long way of their box of view. Lately, a fossil research has discovered that the creatures’ optical present used to be much more impressive than scientists idea. Phacopids seem to have had two compound eyes, like the ones of flies and different bugs. However each and every eye contained as much as 200 smaller peepers, which might have helped the trilobites hit upon gentle in darkish ocean waters, researchers reported in 2021.
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