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The top documents tagged [circulatory system fish]
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circulatory system fish
Heart .
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Heart .
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Vertebrates. The Origin of Tetrapods The first vertebrates on land were amphibians in the Devonian (400 mya) May have arose from the rhipidistian.
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The Cold-Blooded Vertebrates Chapter 13B Body Systems in Vertebrates.
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2007-2008 Domain Bacteria Domain Archaea Domain Eukarya Common ancestor Kingdom: Animals Domain Eukarya VERTEBRATES!!!
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