TRIARTHRUS. 4 1 



Valiant (1901) in a non-technical article described his long search for trilobites with 

 antennas. 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 



