■ 



Js 



PALEONTOLOGY 



SYSTEMATIC SUMMARY OF EXTINCT ANIMALS 



THEIR GEOLOGICAL RELATIONS, 



13 Y 



RICHARD OWEN, F.R.S. 



Superintendent of the Natural History Departments in the British Museum, 

 Foreign Associate of the Institute of France, etc. 





SECOND EDITION. 



A? Si J' 



EDINBUEGH: 

 ADAM AND CHAELES BLACK. 



MDCCCLXI. 



