BULL. GEOL. SOC. AM. 



VOL. 24. 1912. PL. 33 



Jt I 



Figure 1. — Weathered Block of Bighorn Dolomite 



Showing broad raised welts in a rude network, the interstices of which are tilled with miscellaneous 



fragments of fossils. From Birdseye. south of Thermopolis. Wyoming 



PiGUBl 2. — Talus from the Bighorn* Dolomite 



eral blocks to the right show the deeply pitted surface. The block in the central foreground 

 shows thf Irregular branching growths in upright position with reference to the bedding. North Fork 

 of Teton River, Teton Range. 



BIGHORN DOLOMITE 



