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File:Isthmus of Panama (closure) - Speciation of marine organisms (w annot).png

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English: 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).
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Author Andrew Z. Colvin
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11 June 2017

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current06:53, 12 June 2017Thumbnail for version as of 06:53, 12 June 2017946 × 1,151 (4.16 MB)Azcolvin429User created page with UploadWizard

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