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South American lungfish
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Key terms: bar lungfish till color text value rgb extinct gills lungs modern skull devonian fin air black skull roof bones open arteriosus south american lungfish species space bar breathe gas surface width primitive oxygen homology gas exchange subclass relationships biology timeline burrowing gill arches tetrapods fontsize m mark cartilaginous evolution taxa australian lungfish flow modified osteichthyes plotdata african distribution blood Search external links cited by footnotes on Wikipedia page Lungfish: |
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