Measurements. A B C D mm. mm. mm. mm. Length of skull 945 915 797 ... First to fourth cervicals (vert. 1-4): Length of combined centra 81 79 66 55 Greatest breadth of atlas 283 259 210(?) 146 Greatest height of atlas 215 218 170 148 First thoracic vertebra (vert. 8): Greatest breadth 211 220 174(?) 122 Greatest height[a] 267 321 163 133 Length of centrum 42 46 32 19 Height of centrum 70 67 48 49 Seventh thoracic vertebra (vert. 14): Greatest breadth 142 158 147 128 Greatest height 440 417 260 182 Length of centrum 102 103 74 51 Height of centrum (ant.) 68 69 49 44 Eighth thoracic vertebra (vert. 15): Greatest breadth 253 288 177 100 Greatest height 447 427 265 186 Length of centrum 110 109 78 54 Height of centrum 65 69 51 47 Ninth thoracic vertebra (vert. 16): Greatest breadth 329 366 248(?) 122 Greatest height 418 431 277 192 Length of centrum 117 117 82 58 Height of centrum 69 75 53 49 First lumbar vertebra (vert. 17): Greatest breadth 385 393 [b]275 142 Greatest height 464 451 [b]293 200 Length of centrum 122 120 [b]89 62 Height of centrum 74 81 [b]55 50 Tenth lumbar vertebra (vert. 26): Greatest breadth 362 335 [c]230 158 Greatest height 524 488 [c]343 242 Length of centrum 172 162 [c]129 85 Height of centrum 107 109 [c]78 71 First caudal vertebra (vert. 27): Greatest breadth 336(?) [d]313 223 166 Greatest height 483 [d]458 307 235 Length of centrum 178 [d]160 127 91 Height of centrum 113 [d]109 81 75 Seventh caudal vertebra (vert. 33): Greatest breadth 164 [e]161 113 110 Greatest height [f]255 [f]250 155 [f]135