Image: Isthmus of Panama (closure) - Speciation of marine organisms (w annot)
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Description: Speciation of marine species isolated on each side of the Isthmus of Panama (blue and green) after its final closure 3 mya. Purple lines indicate the exchange of terrestrial species that occurred upon formation of a passable land bridge (the Great American Biotic Interchange).
Title: Isthmus of Panama (closure) - Speciation of marine organisms (w annot)
Credit: Own work
Author: Andrew Z. Colvin
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes
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