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J. P. Dennis 
 

 

Dennis J. P., 1856, The existence of birds during the deposition of the Stonesfield Slate proved by a comparison of the microscopic structure of certain bones of the formation with that of recent bones. Q. J. microsc. Sci. 5, 63–77.

Dennis J. P., 1861, On the mode of flight of the pterodactyles of the coprolite bed near Cambridge. Rep. Br. Ass. Advmnt Sci. (1860), pp. 76–77.