1084 



INDEX. 



Trans3'lvania, 85 



Trap, 86 



—in Connecticut valley Triassic, 

 800 



Trapa natans, ash of, 75 



Traverse (Lake), 94T 



Travertine, TOg, 131, 132*, 133 



Tree-ferns, 53, 669* 



Trees, protection by, 155 



Tremadictyou reticnlatum, 777* 



Tremadoc slates, 431, 517 



Tremataster disparilis, 646 



Trematis, 514 



Trematodiscus Konincki, 700* 



Trematopora, 551 



Trematosaurus, 773 



Trematospira, 562 ; multistriata, 

 551, 579 



Tremolite, 67§, 79, 319, 531 



Tremolitic limestone, 79§ 



Trends, systems of, 35 



Trenton, 490 



Treodopsls appressa, 967 



Triarthrlis, 515 ; Beckii, 422*, 511*, 

 512*, 516 



Triassic period, Trias, 738 ; Ameri- 

 can, 740, 746 ; foreign, 768 



Triceratinm obtusum, 894* 



Triceratops prorsus, 846* ; serratus, 

 846* 



Trichiulus villosus, 691 



Trichomanites, 622 



Triconodon mordax, 789* 



Tridymite, 64§, 84, 318, 323, 338 



Trigonarca pulchra, 915; Sioux- 

 ensis, 855 



Trigonia, 59, 707, 759 (first Ameri- 

 can), 760, 780 (number of 

 Jurassic), 860 ; aliformis, 867 ; 

 carinata, 865 ; caudata, 865 ; 

 clavellata, 780*, 790; Conradi, 

 758* ; costata, 790, 791 ; Eufau- 

 lensis, 854 ; gibbosa, 791 ; incurva, 

 791; limbata, 866, 867; longa, 

 867; Mortoni, 854; navis, 792; 

 paucicosta, 790 ; scabricula, 865 ; 

 Smeei, 791 ; ventricosa, 791 



Trigonia family, 770 



Trigonocaris Lebescontei, 521 



Trigonocarpus, 622, 678*, 689 ; 

 ornatus, 673*, 689 ; tricuspidatus, 

 673*, 689 



Trigonoceratidfe, 675 



Triisodon, 917 



Trilobites, 59, 420*, 421* ; Cambrian, 

 469, 480, 482, 483, 488 ; legs of, 

 422*, 512* ; young of, 512*, 562* 



Triloculina Josephina, 432* 



Trinidad, Col., 313 



Trinidad, W. I., 22, 891 



Trinity epoch or group, 815, 817, 

 832, 834, 836, 837; sands, 817, 

 819 



Trinucleus, 422§, 520, 521 ; concen- 

 ti-icus, 508*, 509, 512, 515, 516, 

 517, 520, 567, 569 



Triolites Cassianus, 773 



Trionyx, 850, 926 



Triopus, 521 



Triphylite, 321 



Triplesia primordialis, 478* 



Triplopus, 918 



Tripolyte, 81 § 



Triprlodon, 852 ; caperatus, 853* ; 

 coelatus, 853* 



Trisetum, 240 ; subspicatum, 945 



Trispondylus, 917, 918 



Tristan d'Acunha, 297 



Tritonium, 916 



Tritylodon, 778, 789 



Trochoceras, 515, 549, 568, 586 (last), 

 591 ; boreale, 552 ; clio, 591 ; cos- 

 tatum, 551 ; Desplainense, 551 ; 

 eugenium, 591 ; Ilalli, 515 ; no- 

 tum, 551 ; panduin, 591 



Trocholites, 506, 520; Ammoniiis, 

 506, 508*, 511, 515, 516 ; undatus, 

 506, 508*, 514 



Trochonema, 514, 516, 520, 521, 

 598 



Trochosmilia striata, 916 



Trochus, 525, 780 ; Texanus, 836 



Trogons, 923 



Troodon, 856 



Troostocrinus, 646 ; subcylindricus, 

 547*, 550 



Tropbon clathratum, 984, 995 



Tropidocaris bicarinata, 621 



Tropidoleptus, 627 ; carinatus, 598*, 

 601 



Tropites, 756, 757 ; subbullatus, 774 



Truckee Miocene, 895 



Tsien-Tang, the eager of, 212, 215 



Tuba acutissima, 917 



Tubicola, 423 



Tucubit Mts., 581 



Tuedian group, 695 



Tufa, volcanic, 80§ ; cones of, 270§, 

 271*, 276* 



Tufa, calcareous, 131, 132* 



Tulip Tree, 812, 837, 879 



TuUy limestone, 576, 593, 594, 599, 

 601, 608, 605 



Tunicates. See Ascidians 



Tunneling by animals, 158 



Turbinella regina, 917 ; Wilsoni, 

 916 



Turbinolia Texana, 837 



Turbo, 707, 780 ; Shumardi, 591 ; 

 solitarius, 774 



Turf, protection by, 155 



Turkey, 34 



Turonian group, 815, 858, 859, 866 



Turricula MUlingtoni, 916 ; polita, 

 916 



Turrilepas, 567, 579, 602 ; Canaden- 

 sis, 518* ; Devonicus, 600* 



Turrilite, 861 



Turrilites, 771, 861 ; Brazoensis, 

 a87 ; catenatus, 862*, 865 ; costa- 

 tus, 866 ; helicinus, 855 ; pauper, 

 854 ; tuberculatus, 866 



Turritella, 824, 916, 922 ; Alabami- 

 ensis, 915 ; alveata, 916 ; areni- 

 cola, 916 ; cselatura, 916 ; carinata, 

 897*, 916; Chipolana, 917; com- 

 pacta, 854 ; erosa, 984 ; Indenta 

 var. mixta, 917 ; Mississippiensis, 

 916 ; multisulcata, 926 ; nasuta, 

 897*, 916; perdita, 916; plebia, 

 378 ; prsecincta, 915 ; pumila, 854 ; 

 reticulata, 984 ; subgrundifera, 

 899*, 917; Tampae, 898*, 916; 

 vertebroides, 854 



Trrtles, 415, 847; Triassic, 772*, 

 w3, 797; Jurassic, 760, 766*, 767* 

 708, 797; Cretaceous, 820, 849, 

 856, 867 ; Tertiary, 202, 901*, 902, 

 923, 927 



Tuscaloosa group, 815, 816, 819 



Tylosaurus micromus, 849* 



Typhis, 916 ; acuticosta, 917 ; cur- 

 virostratus, 916 ; pungens, 926 



Typothorax coccinarum, 758 



Tyrol, dolomyte of, 134 



Tysonia Marylandica, 831 



Uinta Eocene lake basin, 360*, 881*, 

 882, 886, 893 



— Mts., 109, 360*, 365 

 Uintatherium, 907§, 918 ; Leidya- 



num, 907 ; robustum, 907 

 LTitenhage series, 873 

 UUmannia, 693, 704 

 Ulodendron, 699 : majus, 689 ; punc- 



tatum, 689 

 Umbone, 424 

 Umbral series, 634, 728 

 Unaka Mts., 85 

 Unakyte, 85§ 

 Unartok series, 921 

 Unconformability, 114, 115*§, 116 

 Unconformity, 115*§ 

 Under-clay, 639, 653, 708 

 Ungulates, 902, and beyond 

 Ungulina, 621 

 Unio, 612, 821, 829, 837; Danse, 



856; Deweyi, 856; ebenus, 966; 



Liassinus, 760 ; ligamentinus, 



966 ; rectus, 966 ; Valdensis, 861* 

 Unio family, 940, 950 

 Uniontown coal-bed, 651, 656 

 United States, mean height of, 23 ; 



geological map of, 412* ; heights 



of the Cretaceous beds of the 



Eocky Mountains, 988 

 Untercarbon, 632 

 Unterer Wieder Schiefer, 569 

 Upernavik, 244 



Uphant«nia Chemungensis, 611 

 Upper Pentamerus. See Pentame- 



rus 



— Silurian, 535 

 Uralichas Kibeiroi, 521 

 Uralite, 317 

 Uralitization, 317 

 Uraninite, 321 

 Uranium minerals, 321 

 Uranoplosus, 836 



Urformation, 440 (Archaean syn- 

 onymy) 



Urgebirge, 440 (Archaean synony- 

 my) 



Urgneiss, 408§ 



Urgneissformation, 440 (Archaean 

 synonymy) 



Urgonian, 367*, 859, 865 



Urocordylus Wandesfordii, 704 



Urosalpinx trossulus, 917 



Urosalpynx cinerea, 994 



Urosthenes australis, 698 



Urosthenic, 489, 717, 726, 796, 

 931 



Ursa stage of Heer, 704 



Ursus amplidens, 1000 ; Arctos, 

 950, 1004, 1006 ; Arverhensis, 927 ; 



