BULL. GEOL 



. soc 



AM. 





VOL 



.24, 



1912, PL. 30 





; ; * 



F. IL % 





Sii 



*&* 





'*■ weSBm 



" 



L -" 



1 \ ' { 











Tfe lS 



k^; 



J 









Figure 1. — A Detail of the rough Surface of the Bighorn Dolomite 



Showing the raised welts and points and also the fossil-like inclusions. Darby Creek in the Teton 



Range 



FIGURE 2. — A DETAJL OF THE roughest PHASH OF THE wkatui i;i:i> SURFACl o\- nir Biqhor: 



DOLOMITE 



The locality is on Darby Creek In the Teton Range 



BIGHORN DOLOMITE 



