486 New York State Museum 



Tripolite, 19 

 Troy shales, 234 

 Tully limestone, 396 

 Tuna conglomerate, 425 

 Tunicates, 95 

 Turbellarians, 96 



Ulrich, Dr E. O., acknowledgment to, 14 



cited, 247, 300, 353, 418, 430, 454 

 Ulrich, E. O. & Bassler, R., cited, 455 

 Ulrich, E. O. & Cushing, H. P., cited, 248, 300, 455 

 Ulrich, E. O. & Schuchert, C, cited, 300, 353, 418, 455 

 Ulsterian, 371 

 Unconformities, 57 

 Upper black band, 401 

 Upper Clinton beds, 328 

 Upper Medina beds, 319 

 Upper Pentamerus limestone, 327, 376 

 Upper Shelby dolomite, 334, 335 

 Urchins, 82, 85, 112, 125, 139, 165, 175, 177, 260 



cake, 149 



green, 125, 136, 139, 175 



greenish blue cake, 149 



heart, 149, 166 



purple, 139, 175 



sand dollar, 148 



shore, 111 



stinging, 149 

 Utica shales, 267, 289 

 Utica-Lorraine formations, 289 



Valcour limestone, 276 



Van Hise, C. R., cited, 211, 455 



Van Hise, C. R. & Leith, C. K., cited, 211, 455 



Van Ingen, G., cited, 455 



Van Ingen, G. & Clark, P. E., cited, 353, 455 



Vernon shale, 338 



Verrill, A. E., cited, 181 



Verrill, A. E. & Smith, S. I., cited, 455 



Vertical displacement, 54 



