INDEX. 



869 



FelTiiginous segregations in Dakota Creiaceous. 



Fkns tilieefolia 



Ifith Creek, Colorado Kange, granite 



AKD BaTTI E MOUKTAIKS 



MOUKTAISS 



granite 



Koipato Triassjc 



propylite 



Page. 



40 

 147 



85 

 660 

 660 

 661 



eci 



662 



rbyolite 663,664 



sanidin in basalt 666 



scales in Fort Benton group 84,88 



Flaming Gorge Kidge, curves in v. 263 



Dakota Cretaceous 864 



gypsum in Jurassic 265 



Xriassic 2C5 



Jurassic 2 4 



section of MesoBoic. 264 



Ptrmo-CarbonifcrouB 265 



Triassic 2Co 



Flat Bock Point Spring 424 



f on tanelle Creek, G-reen River Eocene 839 



Foothill Section, Watsatcli Range 368 



Forellen Butte, IJ^evada, rbyolite 587 



Forest City, Wahsatch Range, Devonian S.Vi 



Forman Mountains, colnranar rhyolite 796 



rbyolite 797 



Fort Benton gponp, clay iron-stone 87 



eastern foothills, Colorado 



Range 42 



ElkMonntain ICO 



ferruginous clays 87 



fish-scnlesin 84, 88 



LaramieRiver 84 



leaves in sandstone 89 



resemblance to Fort Pierre group 44 



Rock Creek 87 



sandstone for building 89 



Fortification Peak, Tampa Valley, nepbeiine-basalt. 166 



Fort Pierre clays. Little Laramie basin 83 



group, eastern foot-bills, Colorado Range 42 



Sanders, Dakota Cretaceous 78 



Steele, Fox Hill Cretaceous 154 



Fossils, Acervalaria pentagona 544 



Acrocbordiceras Hyatti 646 



Agnostus communis 543 



Agnoatus Neon 548 



Agnostus prolongus 548 



Agnostus tumidosus 548 



Agriocboerus pumilis 307 



Aletornis nobilis 249 



Alveolites multiseptatus 545 



Amia Newberrianua 250 



Ammonites 45,59,83, 



84, 228, 253, 326, 724, 726, 728, 729, 731 



Ammonites Ausseanua (45 



j Ammonites Billingsianns 615 



Ammonites Blakei €45,646,719,724,725 



Ammonites Homfrayi 712 



Ammonites lobatus 63 



Amcicola.. 454 



Anchippodus minor 249 



Ancbura 63 



Auchura fusiformia 335, 336 



Ancy lus undulatns , 7G7 



AnisomyoQ sexsulcatas 45,56 



Fossils, Anomia gryphorhynchtts 233 



Anosteira ornata 249 



Antberophagus prisons 242 



Arcestes Gabbi 724 



Arcestea Nevadensis 724 



Arcestes perplanus 724, 725 



ArcliKocidaris 452 



Asineops sqnamifrons 242 



Asineops viridensis 242 



Astarte - 899 



Atbyris Claytoni 365 



Athyiis incrasaata 670 



Atbyris planosulcatus 365 



Atbyris Roissyi 478,487,490,508 



Athyria sinuata 547 



Atbyris subquadrata. 447 



Atbyris subtilita ..33,53, 76, 289, 30O, 347. 349, 364, 285, 

 386, 422, 454, 490, 504, 508, 509, 522, 526, S69, 547, 548, 60O 



Atry pa nodostriata 565 



Atrypa reticularis 524, 544, 54S, 557, 558, 565, 609 



Aulopora 388 



Avicula cancellata 63 



Avicula Homfrayi 725 



Avicula Nebrascana 63 



Aviculopecten 34T, 369, 389, 404, 429 



Aviculopectea Auguatensis 657 



Aviculopecten catactus 546 



Aviculopecten curtocardinalis 370 



Aviculopecten McCoyi 370,389 



A viculopecten ocoidaneus 389 



Aviculopecten occidentalis 352 



Aviculopecten parvula 370 



Aviculopecten Weberensia 370 



Asinea 85 



Asinea 'Wyomingensis 86 



Baculites .....153,185,271 



Baculites ovatus 45, 49, 83, 117 



Bakevellia 349,373 



Bakevellia parva 305 



Baptemys Wyomingensia 249 



Batby urus Pogonipenais 543 



Belemnites 163 



Belemnites densua 91,92,262,293 



Belemnitoa Nevadensis 7-.;8 



Belleropbon 76,291,.')30 



Belleropbon carbonarius 274, 285, 291, 526 



Belleropbon neleus 545 



Boavus occidentalia 250 



Brontotberinm gigas 67 



BrontothtV'ium ingena 67 



Bubo leptosteua 849 



Callista Deweyl 45,56 



Camarophoria 538 



Campeloma . 328 



Campeloma macrospira 328 



Campophyllum 487,508,550,609,670 



Camptouectes £63 



Camptonectes bellistriatns 163, 262, 265 



Cardium 228,293,727 



Cardium curtum 336 



Cardium paupercnlum 252 



Cardium speciosnm 63 



Cardium subcurtum , 335 



Carinifex Binneyi 766 



Carinifex Xroyooi 766 



