ILLUSTRATIONS Vll 



Page 



Plate 53 — Schucheet : Lower Ozarkic 606 



" 54 " Canadic (Middle Beekmantown) 606 



" 55' " Canadic ( Saint Peter) 606 



" 56 " Middle Ordovicic (Middle Stones River-Chazy) .. . 606 



" 57 " Middle Ordovicic (Lowville) 606 



58 " Middle Ordovicic (Lowest Trenton) 606 



59 " Middle Ordovicic (Late Trenton) 606 



60 " Upper Ordovicic (Utica) 606 



" 61 " Cincinnatic (Lorraine) 606 



62 " Cincinnatic (Late Richmond) 606 



63 " Lower Siluric (Upper Medina-Edgewood ) 606 



64 " Lower Siluric (Ohio Clinton) 606 



65' " Lower Siluric (Walcott- Williamson) 606 



66 " Middle Siluric (Rochester-Osgood) 606 



67 " Middle Siluric (Louisville) 606 



" 68 " Middle Siluric (Guelph) 606 



69 " Upper Siluric (Lower Salina) 606 



70 " Upper Siluric (Bertie) 606 



71 " Upper Siluric (Lower Manlius) 606 



72 " Lower Devonic (New Scotland) 606 



73 " Lower Devonic (Becraft) 606 



" 74 " Lower Devonic (Decewville) 606 



75 " Middle Devonic (Middle Onondaga) 606 



76 " Middle Devonic (Late Hamilton) 606 



" 77 " Upper Devonic (Ithaca-Chemung) 606 



" 78 " Lower Mississippi (Bradfordian) 606 



" 79 " Lower Mississippic (Fern Glen) 606 



80 " Middle Mississippic (Burlington) 606 



" 81 " Lower Tennesseic ( Saint Louis) 606 



" 82 " Upper Tennesseic (Chester) 606 



" 83 " Lower Pennsylvanic (Upper Pottsville) 606 



84 " Upper Pennsylvanic 606 



85 " Lower Permic 606 



86 " Lower Triassic 606 



87 " Upper Triassic ( Hosselkus+ ) 606 



" 88 Lower Jurassic (Hardgrave) 606 



" 89 Early Upper Jurassic ( Sundance) 606 



" 90 " Late Upper Jurassic 606 



" 91 " Early Comanchic (Lower Trinity-Knoxville) 606 



" 92 " Early M. Comanchic ( Fredericksburg-U. Knox- 



ville) 606 



" 93 Late Comanchic (Upper Washita-Horsetown) 606 



94 " Early Cretacic (Benton) 606 



95 " Middle Cretacic (Pierre) 606 



" 96 " Eocene 606 



97 " Upper Oligocene 606 



" 98 " Lower Miocene 606 



" 99 " Upper Miocene 606 



