_Strophalosia_, 163 _Stropheodonta_, 160, 161 _Strophonella_, 160 _Struthiolaria_, 202 _Studeria_, 148 _Sturtzura_, 143 _Stutchburia_, 180 STYLASTERIDS, 119 _Subemarginula_, 198 Submerged forests, 30 _Sunetta_, 187 Superposition of strata, 41 _Synaphe_, 238 SYNDACTYLA, 288 _Synedra_, 92 _Syringopora_, 114 _Syringothyris_, 164 _Tabellaria_, 92 _Taeniopteris_, 88, 89, 164, 250, 265 _Taniwhasaurus_, 279 _Taphaetus_, 283 Tasmanian devil, 287, 295 " wolf, 287, 295 Tasmanite, 77 _Taxocrinus_, 135 _Tellina_, 185, 187, 188 _Temnechinus_, 146 _Tentaculites_, 193, 194, 195 _Terebra_, 198, 199, 202, 204 _Terebratella_, 166, 168 _Terebratula_, 166 _Terebratulina_, 166, 167 Tertiary ironstone, 81 _Tessarodoma_, 158 TETRACORALLA, 113 Tetractinellid sponge, 110, 112 _Tetragraptus_, 124, 126 _Textularia_, 98, 100 _Thalassina_, 248 THALLOPHYTA, characters of, 39 _Thalotia_, 200 _Thamnastraea_, 118 _Thinnfeldia_, 88, 89, 182 _Thurammina_, 97 _Thyestes_, 258 _Thylacinus_, 287, 295 _Thylacoleo_, 293, 303 Time-range of fossils, 50 _Tomodus_, 262 Toothed whales, 295 Torbanite, 77 _Torlessia_, 154 _Trachyderma_, 153, 154 _Trachypora_, 117 _Trematonotus_, 194 _Trematotrochus_, 118, 119 TREPOSTOMATA, 155 _Tretocalia_, 112 Triassic bivalves, 181 " brachiopods, 164 " cephalopods, 208 " crinoids, 137 " fishes, 262 " Foraminifera, 98 " labyrinthodonts, 273 " Ostracoda, 238 " Phyllopoda, 233 " plants, 88 " reptiles, New Zealand, 276 _Tribonyx_, 283 _Tribrachiocrinus_, 137 _Trichograptus_, 124 _Tricoelocrinus_, 139 _Trigonia_, 175, 182, 183, 184, 187 _Trigonograptus_, 126 TRILOBITES, habits of, 222 " structure of, 223 _Tritylodon_, 276, 286 _Trivia_, 198, 199 _Trochoceras_, 205 _Trochonema_, 195 _Trochus_, 191, 194, 195 _Trophon_, 202 _Truncatulina_, 98, 100 _Tryplasma_, 113 Tuatera, 276 _Tudicla_, 201 TUNICATA, 257 _Turbo_, 197, 200 _Turrilepas_, 241, 243 _Turritella_, 191, 198, 200, 201, 202 _Turritella_ -limestone, 74 _Tylosaurus_, 279 _Tylospira_, 198, 202 _Typhis_, 198 _Uncinulus_, 162 _Unio_, 181, 182 _Unionella_, 181 Upper Cambrian trilobites, 227 " Cretaceous bivalves, 184 " Cretaceous brachiopod, 166 " Cretaceous cephalopod, 166 " Triassic fishes, 262 " Ordovician graptolites, New South Wales, 127 " Ordovician graptolites, Victoria, 126 _Urasterella_, 140 _Urosthenes_, 262 _Vaginella_, 198, 199 _Vaginulina_, 98 _Valvulina_, 97, 98 _Venus_, 177, 185, 187, 188 VERMES, characters of, 37 _Vertebraria_, 264 VERTEBRATA, characters of, 38, 257 _Verticordia_, 186 _Vetotuba_, 194 _Voluta_, 198, 201, 202 _Volutilithes_, 198, 201, 202 _Volvox_, 78 _Volvulella_, 201