76 



NEW YORK STATE MUSEUM 



Trilobites, 50. 

 Tropidocyclus hyalinus, 61. 

 Tropidoleptus carinatus, 46, 49, 50, 



52, 53, 55. 



mut. pygmaeus, 58. 

 Tully limestone, 6, 18, 23-25; thick- 

 ness, 23; fossils, 56-58. 

 Tully pyrite, 56. 

 Turbo shumardi, 43. 

 Turrilepas cancellatus, 42. 



devonicus, 47. 



flexuosus, 42. 



foliatus, 47. 



nitidulus, 47. 



squama, 47. 



tener, 47. 



Ulsterian group, 6. 



Vanuxem, cited, 16, 17. 



West Hill flags and shales, 6, 35-36 ; 



thickness, 35; fossils, 63-64. 

 West River shale, 6, 28-29; fossils, 



59-60. 

 Whitfieldella laevis, 9. 



sulcata, 11, 40. 

 Wood, Elvira, cited, 45. 

 Worms, 45, 47, 48, 51, 52, 54. 



Zaphrentis sp., 64 

 complanata, 44. 

 fastigata, 44. 

 gigantea, 44. 

 halli, 48. 

 simplex, 48. 

 tabulata, 44. 



