138 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



DESCRIPTION OF PLATE 14 



PAGE 



Collenia undosa Walcott. ( See pi. 13) 1 13 



Figs, i and 2. (0.5 natural size.) Side and top view of a group of 

 specimens that have apparently grown together, forming a 

 solid mass. They are embedded in the red Spokane shales. 

 U. S. National Museum. Catalogue No. 60709. 



Locality 400b: Algonkian : Spokane shales; 8 miles (12.8 km.) 

 west of White Sulphur Springs, Meagher County, Montana. 



