BUREAU OF AMERICAN ETHNOLOGY BULLETIN 184 PLATE 10 
C 
a, Fossil snail (Yolutoderma) from Mesa Verde sandstones (Late Upper Cretaceous). Length, 
234 inches; width, 134 inches. (USNM 133839.) 6, Knife of jasperized (fossil) wood. 
Length, 4 inches; width, 174¢inches (maximum). (USNM 234751.) c, Calcite concretion. 
Maximum diameter, 3.5 inches. (USNM 133775.) 
