INDEX. 



231 



Textularia folium Parker and Jones, description of 90-91 



plate showing 108 



mississippiensiSf description of 90, 125-126 



plate showing 108 



subhauerii Cnshman, description of S9-90, 126 



plate showing 108 



tumidiUum, description of 89, 125 



plate showing 109 



Thiclniess of strata, graphic computation of, alinement chart for. . 44-46 



graphic computation of, data needed for 40 



geometric construction for 40-41 



trigonometric formula for 41 



graphic representation of 41-43 



mathematical analysis of 43-44 



Toroweap Canyon, Ariz., section in 69-70 



Triangle, right, graphic solution of 48-50 



right, graphic solution of, preparation and use of chart for 49-50 



graphic solution of, aUuement chart for 50 



Tricalycites papyrace^is Hollick, description of 179 



popyracfus, plate showing 181 



Trilocidhm oblonga (Montagu) D'Orbigny, descrijition of 104-105 



oblonga, plate showing 122 



peroblnnga Cushman, n. sp., description of 143 



plate showing 151 



rotunda D'Orbigny, description of 104 



sculpturata Cushman, n. sp., description of 143 



plate showing 150 



trigonula { Lamarck j D'Orbigny, description of 105 



Trochodendroides Berry, n. gen., description of 166 



rhomboideus (Lesquereux) Berry, description of 166-167 



plate showing ISl 



Truncaiulma americana Cushman, description of 97 



a merkana, plate showing 1 14 



var.. description of 136 



byramemis Cushman, n. sp., description of 96-97. 136 



plate showing 114 



lobatula (Walker and Jacob) D'Orbigny, description of. . 96, 13.S-136 



plate showing 114 



pseudoungeriana Cushman n. sp., description of 97, 136 



plate showing 1 14 



vicksburgouis Cushman, n. sp., description of 136-137 



plate showing 152 



U. 



Utah, southwe-stem. See Washington County, Utah. 



Uvigerina byramemis, Cushman, n. sp., descriptions of 95, 13;J-134 



byramejisin, plate showing 112 



pigmea D'Orbignj', description of 134 



plate showing 149 



V. 



VaginuUna leguimn (Linnaeus) D'Orbigny var. elegam (D'Or- 

 bigny) Fornasini, description of 93, 131 



Page. 

 Fa(7mM/maif(?u7nfin (Linnaeus) D'Orbigny var. e^fffaTj.'.- (D'Orbigny) 



Fornasini, plate showing ill 



Vaughau, T. W.. fossUs determined by 82 



VerneuV.ina spinulosa Reuss var. glabrata Cushman, n. var., de- 

 scription of 92 



Tcctimargo Cushman, n. sp., description of 127 



plate showing 146 



VertebraUna advena Cushman, n. sp., description of- 102 



adveria, plate showing 119 



sp., description of 102 



plate showing ng 



sp., description of 140 



Viburnuvi robustum Losquereux, description of 179 



robiistum, plate showing 181 



Vicksburg, Miss., exposures of Byram marl near 80-81 



fossils found near 81, 83-85 



Vicksburg beds, early ])aleontologic work on 79 



Virgin City, Utah, sections west of 72-73 



Virgin limestone member of the Moenkopi formation, fossils col- 

 lected from 67-68 



VirguHna sp., description of 92 



sp., plate showing HO 



W. 



Washington County, Utah, age of the formations in 66-69 



features of 53-54 



fossils collected in 66-68 



general section of 54-56 



local sections in 69-77 



stratigraphy of 54-66 



structure of 54 



Washington dome, U tah, section in 74 



White, David, acknowledgment to 22 



Widdringtovitcs rcichii (Ettlngshausen) Heer, erroneous identifi- 

 cation of 209, 210 



Wolf Hole, Ariz., section north of 75 



Woodbine, Tex., fossil plants collected at 153 



Woodbine sand, fauna of 155 



flora of, descriptions of 159-180 



distribution of, in other formations 159 



early collections of 153 



features of 1.55-156 



plates showing isl 



relations of, to that of other formations 156-1.')S 



naming of 154 



nature and distribution of " 154-155 



Woodwards, Miss., exposure of Byram marl ai 82 



Woolsey Tank, Ariz., plate showing 189 



bank of wash near, plate showing 189 



Z. 



Zizyphus lamareiisis Berry, description of 170 



lamareimx, plate showing 181 



o 



