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Journal Article

On the Evolution of the Vertebrata, Progressive and Retrogressive

E. D. Cope
The American Naturalist
Vol. 19, No. 2 (Feb., 1885), pp. 140-148
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Page Count: 9

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Topics: Vertebrates, Birds, Embryology, Insect larvae, Reptiles, Hemispheres, Jaw, Bones, Perfection, Phylogeny
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