Table Showing Divisions of the Miocene. 



(Smith or Deep River Beds) 





1=1 c;= 





1^ « 



"Z'ZS w 



No. 2 



No. 1 



400 ft. 



Marl volcanic 

 dust; soft lime- 

 stone & fine sand. 



Snails. 



200 ft. 



Gray and yellow 

 clay, sandstone 



and conglomerate 

 Hot spring de- 

 posits. 



Castor, Hyaenodon, Hyraco- 

 don, Aceratherium, Colodon 

 dakotensis, C. procuspida- 

 tus, Titanotherium, Meso- 

 hippus, Oreodon culbertsoni, 

 O. gracilis, Agriochoerus,Poe- 

 brotherium. Turtles 



age in Europe. The discovery of Palaeomeryx has been predicted bj 

 Cope and suspected by Scott, but it has novi^ become nearly a certainty 

 as I have found the inferior dentition— exclusive of incisors and ca- 

 nines,— of one species, and the molars of another, both having the 

 characteristic Palaeomeryx fold.* I have also discovered a second 

 American species of Anchitherium (using the term in the restricted 

 sense in which it is used by Scott); but it is much smaller than the 



* See note under Palaeomeryx. 



