INDEX TO PALEONTOLOGIC CONTRIBUTIONS 



22: 



Stylonurus excelsior, 134 

 Swinnerton, H. H. cited, 145, 148 

 Syntrophia lateralis, 20 



Tetragraptus fruticosus, 21 

 Torrellella, 83 



laevigata, 83 



taenia, 83 

 Triblidium cornutaforme, 72 

 Trilobites, presence of a median eye 



in, 127-43 

 Trimeroceras gilberti, 80 



wabashense, 80 

 Trinucleus, 127, 128 



bucklandi, 129 



concentricus, 146 

 Trochonema exile, 20 

 Turrilepas (?) newberryi, 96 



Ulrich, E. O., cited, 20, 21, 130, 143 

 Urasterella, 51 



asperula, 50 



grandis, 51 



Urasterella (continued) 

 lutheri, 47-49 

 montana, 50 

 pulchella, 50 



ruthveni mut. arisaigensis, 46 

 schucherti, 50 

 stella, 49, 51 



Van Name, cited, 27 

 Verneuil, de, cited, 98 



Walcott, cited, 26 

 Wardell, H. C, cited, 105 

 Weller, cited, 125 

 Westergard, A. H., cited, 143 

 White, David, cited, 13 

 Wiman, Carl, cited, 15 

 Woodward, H., cited, 98, 105 



Ziegler, Victor, cited, 20 

 Zittel, K. A., cited, 143 

 Zittel-Eastman, cited, 100 



