S

Sacrison, Stan, 65 Saurichians, 125

Scavenger or hunter, Tyrannosaurus rex as, 203-220

cooperative hunter, argument for, 215-216 hunter, argument for, 206-207, 213-215 scavenger, argument for, 207-213, 216-218 Seasons, 154

Senses of Tyrannosaurus rex, 187-191 Serrations on teeth of Tyrannosaurus rex, 111-112

Sex differentiation among Tyrannosaurus rexes, 174-177 Sheffield, Phil, 39 Size of dinosaurs, 124, 177 of Tyrannosaurus rex, 177-187 Skeletons of dinosaurs, rarity of, 28 Skeletons of Tyrannosaurus rex differences among, 171-174 display by Henry Fairfield Osborn, 81-83 number found, 14 uses of, 1 4

young Tyrannosaurus rex, 17 Skin appearance of Tyrannosaurus rex, 9293

Skull of Tyrannosaurus rex, 94, 103-109, 173174

Sleep position of Tyrannosaurus rex, 79 Smith, Matt, 35, 97 Snyder, Roy, 38-39

Sound waves, for finding dinosaurs, 29 Sounds produced by Tyrannosaurus rex, 190191

Sources of information, 227-228 South Dakota, reason for Tyrannosaurus rex in, 25

Speed of Tyrannosaurus rex, 79-80, 193-198 Sternberg, Charles M , 64, 68-69 Strength of teeth of Tyrannosaurus rex, 112 Strength of Tyrannosaurus rex, 198 "Sue," 65, 70-73 confiscation of, 76-77 environment of, 146 Swimmer, Tyrannosaurus rex as, 205

Tail position of Tyrannosaurus rex, 192-193 Tail vertebrae of Tyrannosaurus rex, 121 Taphonomy, 30 Tarbosaurus bataar, 133

compared with Tyrannosaurus rex, 135-136 Tatarinov, Leonid, 189 Taylor, Bea, 40

Tectonic plates, shifting of, effect on discovery of dinosaurs, 19 Teeth of Tyrannosaurus rex, 109-113 Tetanurans, 126-127 Theropods, 125-126 Tibia of Tyrannosaurus rex, 120 Toes of Tyrannosaurus rex, 120-121 Tooth rings of Tyrannosaurus rex, 110-111 Totosaurus, 165

Tracks made by dinosaurs, 196 Trees, fossil, 144 Triceratops, 160, 165, 200 Troodontids, 127 Two Medicine Formation, 41 Tyrannosaurids, 127-131 energy of, 179

0 0

Post a comment