What a delightfully obvious and visually compelling example of a transitional fossil! A flatfish in which the eye migrates from one side to another, but not quite as much as in the modern flounder. Carl Zimmer and Ed Yong have the details and explanation.
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tags: researchblogging.org, evolution, flatfish, Amphistium, Heteronectes, transitional fossils, missing link, Matt Friedman
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