Mutant zebrafish with extra fin bones may hold clues to how the first animals walked on land – Science Magazine

This illustration from a 14th century Dutch encyclopedia of animal life shows scientists have been thinking about the fin to limb transition for centuries.
Der naturen bloeme/Nationale Bibliotheek
By Elizabeth PennisiFeb. 4, 2021 , 11:00 AM
Almost 700 years ago, a Dutch naturalist envisioned a fish with arms that would enable it to climb out of the water, setting the stage for terrestrial life. Now, it turns out, his fantasy had roots in reality. Researchers studying skeletons of the finger-size…

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