T tabulae: [51] Tabulata: [51] tape, masking: [19] tapirs: [104] tar: [5] Tarleton State College: [27] Tarrant County: [11] taxonomy: [21]-22 teeth, horse: [104] mammoth: [104] shark: [10], [87], [88] Tellina: [73] Tertiary— derivation and pronunciation: [34] fossils: [43] corals: [53] gastropods: [59], [63], [64] mammals: [100]-107, [103], [105] microfossils: [32] pelecypods: [72], [73], [74] radiolarians: [49] rocks of Gulf Coastal Plain, High Plains, North-Central Plains, and Trans-Pecos region: [42] Tetracoralla: [51] Tetrapoda: [86], [89]-107 texana, Exogyra: [70] Texanites: [77] Texas A. & M. College: [1], [27] Texas Christian University: [27] Texas College: [27] Texas College of Arts and Industries: [27] Texas Highway Department: [17] Texas Memorial Museum: [14], [87], [95], [97], [100], [102] Texas Technological College: [27] Texas, the geology of: [34], [37]-43 Texas Western College: [27] Thallophyta: [43], [46] Theophrastus: [3] Therapsids: [89] Theria: [100] therians: [100]-107 artiodactyls: [101], [106] carnivores: [102], [103] dinocerates: [102], [105] edentates: [100], [101], [102] pantodonts: [102] perissodactyls: [104] proboscideans: [102], [104], [107] Theropoda: [97] theropods: [90], [97], [98] The University of Texas: [1], [2], [27] time, geologic: [34] titanotheres: [104], [105], [106] toads: [89] tortoises: [89] traces of organisms: [14] burrows: [14] coprolites: [14] gastroliths: [14] tracks: [14], [15] trails: [14] Tracheophyta: [44], [46], [48] Trachodon: [90], [97], [99] tracks, dinosaur: [14], [15], [97] Trans-Pecos region: [35], [36], [40], [42], [43], [86], [95], [102], [106] tree sloths: [100], [102] trees, coniferous: [7] Trepospira: [61] Triassic— derivation and pronunciation: [34] fossils: [42] dinosaurs: [95] phytosaurs: [91], [94], [95] of Crockett, Glasscock, Pecos, Reagan, and Upton counties; Glass Mountains and High Plains: [42] Triceratops: [90], [99], [100] Trigonia: [69] Trilobita: [78] trilobites: [78], [80] morphology: [80] Trilobitomorpha: [78] Trinacromerum: [91] Trinity University: [27] [trivial name]: [21]-22 Trochosmilia: [53] Tuba: [64] tuberculatus, Aulosteges: [12], [13] Turrilites: [77] worthensis: [22] Turritella: [62], [63] [turtles]: [89], [91] tusk-shells: [56] Tyler Junior College: [27] Tylosaurus: [91], [93] Tylostoma: [62] Tyrannosaurus: [90], [97]

U uintatheres: [102], [105] Uintatherium: [102], [105] umbilicus: [59], [60] United States Geological Survey: [19] United States National Museum: [2], [12] University of Corpus Christi: [27] University of Houston: [1], [27] University of Texas, The: [1], [2], [27] [Upper Cretaceous]: [34], [42], [78]. See also [Gulf]. Upton County: [42]

V valves, brachiopod: [54], [56] pelecypod: [59], [65], [66] Van Horn uplift: [35], [36], [40], [41] Venericardia: [73] bulla: [72] ventral valve, brachiopod: [54] Venus mercenaria: [22] Vertagus: [63] Vertebrata: [84], [86]-107 vertebrates: [86]-107 amphibians: [89], [92] birds: [100] fish: [87], [88], [89] mammals: [100]-107 reptiles: [89]-100 Vokesula: [73] volcanic ash: [5] Volutolithes: [64]

W Waco: [91], [92], [95] wacoensis, Kingena: [56] Washington, D. C.: [19] washitaensis, Gryphaea: [69] Weches formation: [43] West Texas State College: [1], [27] Wilson, John A.: [2] Wilson, Sarah Louise: [2] Wise County: [20] wood, petrified: [19] Woodbine: [10], [37], [47] worms, annelid, fossil, segmented: [78] worm tubes, Cretaceous: [9] Worthenia: [61] worthensis, Turrilites: [22]

Y Yoldia: [67] Young County: [20] Young, Keith: [1]

Z Zoantharia: [51] zooecia: [51]

Transcriber’s Notes