INDEX 



101 



Page 



Telephus spiniferus, new species _. 29 



mentioned 14,19,27,30 



spiniferus calhounensis, new vari- 

 ety -- 30 



stratigraphic and geographic range 



of 5,47 



superstis, mentioned 15 



systematic position of 6 



tellicoensis, new species.. 35 



mentioned. 32, 33, 35, 36, 37, 42 



transversus, new species 37 



mentioned... 35,36 



troedssoni, described 40 



mentioned 14,29 



wegelini, discussion of 13, 16 



mentioned 15 



Tellico formation, variations in base of 37 



Tilting and warping of surface of continents. 58 



Page 

 Time required to effect modifications of 



faunas _ 58 



Tornquistia, mentioned 51,52 



Tremadoc formation of England, age of 82 



Tretaspis bucklandi, mentioned. 88 



mentioned 51 



Trilobites as factors in correlation 48 



Trinucleus beds, mentioned 66 



subradiatus Reed, mentioned 50 



zone of in Norway and Sweden.. 87 

 Troedsson, Gustav T., correlation of forma- 

 tions in northern Greenland by 67 



Tuscarora and Clinch sandstones 81 



Twenhofel, W. H., mentioned 65,82 



Viola linestone, age of discussed 77, 88 



Whitehouse group of Scotland 85 



Whitesburg limestone, description of 2 



fossils of 27 



U S SOVEBNMENT PRINTING OFFICE: 1929 



