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Frog.
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Side view of Amphibian Ichthyostega found in Devonian Rocks in...
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Overhead view of amphibian, Diplocaulus, from Permian Period
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Fossilized Skeleton of Amphibian, Eryops, from Permian period
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Reconstruction of amphibian, Eryops, in natural environment
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Diadectes from the Early Permian era.
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An Ichthyostega. Also on the artwork is a Hesperornis, a lesot...
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A Proterogyrinus from the Carboniferous.
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A ventastega with fish-like body and tail.
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A Ventastega forelimb showing the digits.
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An Eryops forelimb.
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An Ichthyostega forelimb showing the Olecranon process.
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A Proterogyrinus from the Carboniferous era.
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A Tetrapod skulls showing internasal bones.
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A Tetrapod skull showing internasals missing from skull of mor...
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