138 



INDEX. 



Page. 



Wasatch formation, fauna of 36-42,92-95 



homotaxis of 36-42 



figures showing 23,38,39 



Washakie Basin, Wyo., deposits of 53-54 



fauna of 92-100 



formations of, homotaxis of, figures show- 

 ing 23,53 



history of 53 



Washakius 100 



insignis 95 



sp 95 



Washtuena Lake, Wash., fauna of 89 



Weeks, F. B., papers by 9 



W'hite Buttes, N. Dak., fauna of 106-109 



W^hite River group, fauna of 103-111 



homotaxis of .60-61 



figure showing 23,62 



Williston, S. W^, papers by 18 



Wind River Basin, Wyo., formations of, 



homotaxis of, figure showing 23 



Wind River formation, distribution of, map 



showing 37 



fauna of 43-48,92-95 



homotaxis of 43-48 



Wortman, J. L., on Huerfano Basin 48 



on volcanic ash 24 



Page. 



Wortman, J. L., on Wind River formation. . 47 

 papers by 11,13,17 



Wortman, J. L., and Cope, E. D., paper by.. 17 



Wortman, J. L., and Osborn, H. F., papers 



by 12,16 



Wortmania 102 



otariidens 92 



Wyoming, fauna of 92-100, 103-109 



formations in, homotaxis of, figures show- 

 ing 23,65 



geologic map of 37 



Oligocene and Miocene in, map showing. 60 



Xenotherium. 

 unicum. . 



110 

 103 



Ypresien, homotaxis and fauna of 36-50 



Z. 



Zeuglodon 20 



Zeuglodon zone, mammals of 20 



I Zone, definition of 7 



I Zones, mammalian, diagrammatic section 



! showing 22 



0 



136 



6683 C 70 1 I 



