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Fossil insect eyes shed light on trilobite optics and the arthropod pigment screen
Nature, Published online: 14 August 2019; doi:10.1038/s41586-019-1473-z
Comparing the eyes of crane-fly fossils with those of extant species demonstrates that they contain eumelanic screening pigments and that the lenses are calcified during fossilization, with implications for interpreting optical systems in other extinct arthropods such as trilobites.