230 



INDKX. 



Page. 



Polymorph inn bi/ramtnsis Ciishman. n. sp.. description of 94, 131 



plate showing Ill 



cii^pidata II. B. Brady, description of 133 



plate showing 147 



var. coHulata Cashman, n. var 133 



plate showing 148 



equalis D'Orbigny, descri tion of 132 



plate showing 14S 



gibba D'Orbigny, description of 93-94,132 



plate showing Ill 



fistiilose form, description of 94 



plate showing 112 



probUnin D'Orbigny ?, description of 94-9.'), 131-132 



plate showing ; 112 



reginn H.B.Brady, Parker, and .Tones, description of y4. 131 



ptate showing 112, 147 



spinosa (D'f^rbigiiy) logger, description of 133 



plate showing 14s 



vicksburgensis Cushraan, n. sp., description of 133 



plate showing 148 



popiilus harkcriann LesquereiLx, description of 1*J3 



Pull iniiHna advena Cushman, n. sp., description of 99 



adrcna, plate showing 116 



byramensit Cushman, n. sp., description of 99, 138 



plate showing 116 



glabrata Cushman, n. sp., description of 99,138 



plate showing 116 



Q. 



QuinqndocuHiia hicostala I>'<irbigny, description of 141 



bicostata D'< »rbigny var., description of 102 



var., i)lale showing 120 



contorta D'' irbigny, description of 142 



[ilate showing 151 



cookei Cushman, n. sp., description of 141 



plate showing 150 



crassa D'Orbigny ?, description of 102 



plate showing 121 



cui'icriaim D'Orbigny, description of 102, 141 



plate showing 120 



glabrata Cushman, u. sp., description of 141 



I)late showing 151 



lamarrkiana D'Orbigny, description of 142-143 



luntra Cushman, n. sp., description of 141-142 



plate showing 150 



seminulum (Linnaeus) D'Orbigny, description of 142 



tessellitta Cushman, n. sp., description of 142 



plate showuig 150, 151 



vcnu.sta Karrer ?, var., description of 102-103 



plate showing 120 



vick.tbargcnsis Cushman, n. sp., description of 141 



plate showing 151 



luigarh D'Orbigny, description of 142 



plate showing 149 



sp., description of 103 



plate showing 120 



R. 



Red BlulT clay, fossils found in 82, 83-85 



Red wall limestone, features of, in Utah and Arizona 5l>-.'}7 



Recside, John B., jr., and Bassler, Harvey, Stratigraphic sections 



in southwestern Utah and northwestern Arizona 53-77 



Reeves, Frank, cited is 



Rhamey Hill, Tex., fossil plants collected from 153 



Rhamnustniai Lesquereu.T, description of 109-170 



tenui, plate showing ". . . LSI 



Rhus reddiliformis Berry, description of 1(19 



redditifonnis, plate showing isl 



Rhythm in movements of ancient seashores 201 



Ruck Canyon Ariz., section at head of 70-71 



section at mouth of 71 



Rock Canyon conglomeratic member of the Moenkopi formation, 



fossils collected from t)7 



Ross, Clyde P., Geology of the lower Gila region, Ariz 183-197 



Rotalia byrainensis Cusliman, n. sp., description of 99, 138 



byramcnsis plate showing 117 



Page. 



Rotalia d^ntata Parker and .Tones, description of 100 



plate showing 117 



var. pnna Cushman, n. var., description of 139 



plate showing 152 



vicksburgcn.sif! Cushman, n.sp., description of 139 



plate showing ', , 152 



Roxana Petroleum Corporation, acknowledgment to 22 



Rudd Ko. I well, location of r 5-6 



log of, plate showing In pocket. 



section of, correlated with type section 15 



sections of, lliicker than- corresponding sections of Seaman 



well 6,7, 17 



S. 



Saddle Mountain, Ariz., plate showing ISS 



St. George, Utah, sections north, east, and south of... 73-75,76-77 



Salii deUta Lesquereux, description of 163 



hsquereuxii Berry, description of 162 



Sapmdnp.sis bdvidcrcnsis Berry, n. sp., description of 216-217 



bclvidcrnisi.^, plate showing 225 



brcvi/olia Fontaine, description of 216 



plale showing 225 



viagnifoHa Fontaine, description of 214-215 



plat e showing 225 



inriabilis Fontaine, description of 213-214 



nlal e showing 225 



Sapiiidus morrisoiii Heer, description of 168 



Sassafras mudgii Lesquereux, descriiJlion of 219 ■ 



mudgn. plate showing 225 



Seaman No. 1 well, location of 5-6 



log of, comparison of synthetic log with 17-18 



plate showing In pocket. 



oil in 12 



sections of, thicker than corresponding sot-tions of Rudd 



weU 6, 7, 17 



Sequoia coiidUa, Lesquereux, description of 209-211 



condiiu, plate showing 225 



gracillimn Newberry, erroneous naming of 209-210 



Shinarump conglomerate, features of, in Utah and Arizona 62 



north of Virgin City, Utah, plate showing 67 



Siphonina adrcna Cushman, description of 9S, 137 



advena. plate showing 116 



Smith's Mesa, Utah, section in 73 



view northward toward, jilale showing 59 



Spirillina limbatn H. B. Brady var. bipundala Cushman, n. var., 



description of 134-135 



limbata var. bipunctata, plate showing 149 



subdecortifa Cushman, n. sj)., description of 95 



plate showing 113 



Spiroloculitia (intiUiinnit D'Orbigny, description of 140 



anfiUarum, plale showing 150 



byraviensis Cushman, n. sp., description of loi 



plate showing II9 



gratcUnipi U'( )rbigny, description of 101 



plate showing 119 



imprimata Cushman, n. sp., description of ini-l02, 140 



plate showing liy 



Sterculia lugubris Lesquereux?, description of 171 



lugubris, plate showing isi 



viucnmnta Lesquereux, description of 218 



iowjitri (Lesquereux) Berry, description of 217-21S 



plate showing 225 



Stratigrapliic units, use of term 5 



Strombus costatus, plate showing 34 



Sulphide, conditions affecting deposition of 4-5 



Supai formation, features of, in Utah and Arizona 57-58 



Synthetic log, description of 3 



T. 



Tertiary (?) sandstone, features of, in Utah 65 



Tertiary (?) and Quaternary rocks, features of, in Utah and 



Arizona 66 



Texas, north-central, generaUzed log for 18-20 



generalized log for, plate showing In pocket. 



Textularia agghitinans D'Orbigny, description of 89 



agglatinans, plate showing 108 



