'230 



CAKBONIFEROUS FORMATIONS AND FAUNAS (»K COLORADO. 



I can see, the iicculiarities of the Leadville and Front Range facies indicate merely 

 contemporanoou.s variation in local marine conditions, or slifj'ht difference in geologic 

 age. They have absolutely no necessary' bearing upon the (luestion of land and 

 water areas in Colorado during their deposition, but from the per.sisteilt lithologic 

 character of this horizon as a nearly pure limestone we may infer that land areas of 

 any size could not have been near at hand. 



T.viiLE IX. — Saininary table /or comparing tite ilidribntion of Mmissippuin species in the San Juan, tSalidu, 

 Orested Butte, Asperi, Leadville, Perr;/ Park, Pikes Peak, Canyon, and Larimer County areas. 





San 

 Juan. 



Salida. 



Crested 

 Butte. 



Aspen. 



Lead- 

 ville. 



Perry 

 Park. 



Pike.s 

 Peak. 



Call- , Larimer 

 yon. County. 



CCELENTERATA. 



2 1 

 2 





5 



2 

















- 















1 



























1 





5 























1 

 1 



1 















1 



1 

 2 



2 

 1 

 2 



1 



1 



4 

 2 

 1 

 4 



1 















ECHINODERMATA. 

































BRYOZOA. 





























































































ERACHIOPODA. 





1 

 1 



















(■■') 



1 





(■•') 



(?) 







Productella concentrica 























1 

































1 













-^Productus Ifeyicostus 



2 

 4 

















Spirifer centronatus 





6 

 1 

 1 







1 



4 



2 



1 



' Spirifer centronatus var 











2 

















Spirifer sp a . . . 





1 

 5 











' Spirifer sp b 











1 







1 



Svringotliyris carteri . 







1 













4 













1 



1 

















Spminnln. snbqnjirlrntfl '^ 











3 



(?) 























1 





1 





























2 



3 



2 





Eumetria woosteri 











(?) 



1 





2 

 1 

















Crtmarotcechia metallica 

















