TRIARTHRUS. 
41 
Valiant (1901) in a non-technical article described his long search for trilobites with 
antennae. The discovery of the wonderful pyritized trilobites at Cleveland's Glen near Rome 
Fig. 10. — Triarthrus becki Green. A new restoration, modified 
from Professor Beecher's, to incorporate the results of his later 
work. The inner ends of the endobases are probably too far apart, 
as it was not discovered until after the drawing had been made that 
the appendifers projected within the dorsal furrows. Drawn by 
Doctor Elvira Wood. X about 3.8. 
was not the result of a lucky accident, but the culmination of eight years of labor in a local- 
ity especially selected on account of the fineness of grain of the shale. 
After 1896, Professor Beecher turned his attention largely to the problem of the classi- 
fication of trilobites, and while he continued the arduous task of cleaning the matrix from 
