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On the evolution of the vertebrata, progressive and retrogressive. 



The position of Pterichthys in the system. 



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Twelfth contribution to the Herpetology of Tropical America. 

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 The relations between the theromorphous reptiles and the monotreme 



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Scientific Society of the University of Kharkov. 

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Dalton, J. C. Topographical Anatomy of the Brain. 3 vols. Phila- 

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 Dawson, George M. On the superficial deposits and glaciation of the 

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