by Meave Leakey
 Pleistocene, 93, 165, 264–65, 266, 267–68
   Early, 58, 262, 267
   Late, 268, 318–19
   Middle, 267–68, 304
   Pliocene, 93, 161
   Late, 58, 165, 262
   poaching, 55–56, 62, 74, 116
   Poole, Joyce, 114, 120, 121
   positive feedback, 263
   postmenopausal period, 225, 229–30, 237–38
   potassium-argon dating techniques, 266
   power grip, 163, 164, 166
   precession, 259, 260, 262, 263
   precision grip, 162–64, 165, 190, 215
   precocial babies, 228, 229, 232, 233, 234
   prepared core technique, 319–20
   proboscideans, 93–96, 101. See also elephants
   prognathism, 203, 205
   Purple Marker, 82
   pygmy hippo, 87
   pygmy stegodon, 284
   Q
   quadrupeds, 131, 133, 254
   R
   radiocarbon dating technique, 266
   Rak, Yoel, 221
   Red Marker, 82
   Red Sea, 276
   reproductive strategies, 228
   rhinos and rhino fossils, 74, 91, 100, 101
   ring species, 154–55
   robust australopithecines, 181–83, 185–88, 190–91, 204–5, 207, 220–21
   rock art, 45–46, 335
   Romania, 321, 332
   rubisco, 97–98, 99
   Ruff, Chris, 316
   ruminants, 188–89
   running, endurance, 245–48, 255, 336
   running biomechanics, 253–55
   S
   sabre-toothed cats, 109, 244, 271
   Sadiman (volcano), 135
   Safina (political party), 143
   sagittal crests, 181, 182, 185, 188, 190, 213
   Sahara, 272–73, 275, 331
   Sahelanthropus tchadensis, 175, 180
   Sambungmacan 3 (Sm 3), 299–300
   Sandawe people, 335
   Sangiran, Java, 277, 300
   San people, 335
   sapropels, 261–62, 309
   Sarich, Vince, 63
   Savage-Rumbaugh, Sue, 251–52
   scavenging, 243–44
   scissor grip, 164
   scoliosis, 240–41
   sea cores, 261–62, 264–65, 267, 309
   secondary altricial state, 227–28, 232, 233, 234, 250
   sediment layers, 60–61, 259–65
   Segerdahl, Pär, 252
   Senut, Brigitte, 173–74
   Serengeti plains, 21, 22, 134–35, 247, 248
   sexual dimorphism, 136, 153–54, 184, 185–87
   sexual selection, 104–5
   shifta bandits, 33, 285
   Shipman, Pat, 272
   shoulder morphology, 281, 282–83
   Siberia, 334
   Sibiloi National Park, 151, 286, 290–91
   Sicily, 275–76, 280
   side-necked turtles, 85, 86–87
   Silberberg Grotto, 178–79
   silica, 264
   Sill, William, 79
   Silverstein, David, 115
   Simiolus enjiessi, 48
   Sinanthropus pekinensis, 209
   single-lineage hypothesis, 136–37, 155–56, 171, 175, 206, 207
   single origin hypothesis, 318, 327, 331
   Siwaliks, 97
   skeleton discovery, 50–53, 54
   skin cancer, 337
   skin colour, 336, 337–40
   slow loris, 163
   Smith, Holly, 234–35, 236
   snakes, 41, 47, 134, 198, 287
   social bonding, 237–39, 248–49, 251–53, 315
   soft-shelled turtles, 87
   Sojourner, 169
   solstices, 259
   South Africa, 162, 177–81, 187, 190, 193, 201, 230
   South America, 100
   South Turkwell, 65, 166, 341
   Spain, 276
   speech and language, 229, 248–49, 251–53, 335
   spheno-occipital synchondrosis, 234, 296–98
   spina bifida, 338
   spinal curvature, 131, 132
   splitters versus lumpers, 318–21, 327
   Spoor, Fred, 200–203, 205, 220, 255, 295–303, 341
   stabilization and running, 254–55
   Stegotetrabelodon, 91, 95, 96
   Sterkfontein, 178–80
   Stewart, Kathy, 71, 86, 89–90
   stone flakes/tools
   at KBS site, 30–31
   Louis’s scavenging exercise and, 244
   manual dexterity and, 107, 161–62, 163, 166, 191
   at Mata Menge, 278–79
   at Olduvai, 210, 211–12, 215, 222
   at Olorgesailie, 271–72
   Stoneking, Mark, 336–37
   Stony Brook University, 292, 294
   Strait of Gibraltar, 275–76
   striae of Retzius, 236
   Suidae, 91
   sweating versus panting, 246, 336
   Switzerland, 262
   synchrotron, 341–42
   T
   Taieb, Maurice, 130, 133–34, 136
   Tanzania, 20, 45–46, 135, 193, 242, 247. See also Olduvai Gorge, Tanzania
   tapeworms, 271
   taphonomy, 79
   Tarahumara people, 248
   Tassy, Pascal, 92, 94
   Taung Child, 177. See also Australopithecus africanus
   Teaford, Mark, 90
   technology, 4, 169, 340, 343–47
   teeth. See also canine teeth
   adaptations in, 88, 91–101, 165, 176, 181, 183, 185, 186
   age estimates and, 234–36
   comparisons of, 149–50, 153–54, 166–68, 171–72, 173, 175, 204
   isotopic analysis, 97–99, 165, 183–84
   theory of mind, 252
   Theropithecus (genus), 184, 271–72
   Theropithecus brumpti, 184
   Theropithecus oswaldi, 184–85
   Thin Ice (Bowen), 311
   Thompson, Lonnie, 311–12
   tiang, 29–30, 35, 36
   Tigoni Primate Research Centre, 17–18, 20, 22–29, 37, 344
   Tobias, Phillip, 178, 214–15
   Tocheri, Matthew, 282
   tool making, 249, 319–20. See also stone flakes/tools
   tortoise fossil, 49
   Tragoportax, 91
   Transvaal, 177, 180
   tree shrew, 163
   trilophodont gomphothere, 94
   Trinil, Java, 208, 277
   Trinkaus, Erik, 318
   trunk stabilization, 254, 255
   tuberculosis, 8
   tuffs, 30–31, 59, 60–61, 80, 82, 157, 198, 216–17, 231, 308–9
   Tugen Hills, 173
   Tulu Bor Tuff, 198
   Tunbridge, Louise, 143
   Turkana
   environmental changes in, 88, 90–94
   fossil expeditions (1969), 3–6, 29–37
   fossil expeditions (1970s), 38–39, 41–43, 215–18, 221
   fossil expeditions (1980s), 46–53
   fossil site dating, 61–62
   humans split off from apes in, 62–65, 70–71
   Leakey children at, 40–41, 47, 49, 51–52
   Richard’s leaving fieldwork at, 57
   Turkana Basin. See also East Turkana; Lake Turkana; Omo-Turkana Basin; West Turkana
   early hominins in, 108
   evolutionary history of, 47, 49
   fossil record of bovids in, 268–70
   fossil sites, 76, 86
   geology of, 59–62, 196–97, 269
   Harris’s work throughout, 90
   during the Miocene, 93, 94
   modern species appearances in, 159–60
   Richard and exploration of, 58, 60
   robust australopithecines and, 182
   sediment layers in, 60–61, 261–62
   suid lineages in, 91
   Turkana Basin Institute (TBI), 294–95, 341
   Turkana Boy. See also Homo erectus
   Dean’s study of teeth of, 236–37
   development of, 231–36, 249
   
discovery and excavation of, 76, 125, 193, 195, 230–31
   humeral torsion in, 283
   scoliosis, 240–41
   search for hand and foot bones of, 282
   skeleton of, 53
   Walker and, 231–36, 249, 289, 316
   Turkana people, 51–52, 70–71, 316
   Turkanapithecus, 48
   Turkanemys pattersoni, 85, 87
   Turkwell River, 64, 65, 305–6
   turnover-pulse hypothesis, 194
   turtles and turtle fossils, 49, 85, 86–87
   U
   Uganda, 39, 41
   United States, 11–12, 16, 20, 249
   University of Bangor, 14–16, 26, 27, 120
   University of the Witwatersrand, 178–79, 201
   University of Western Australia, 338
   UV radiation, 337–40
   V
   valgus angle, 131, 132
   venomous sting, 188
   vertisols, 158
   vervets, 25–26
   vitamin A, 239–40
   vitamin D synthesis, 338–40
   volcanic eruptions, 59, 60–62, 82, 84, 157
   Vondra, Carl, 61
   Vrba, Elisabeth, 194, 268, 269
   W
   Walker, Alan
   Allia Bay and Kanapoi material studied by, 152–55
   excavation and sabre-toothed cat bones, 109
   friendship with Leakeys, 43
   H. erectus pelvis calculations and, 233
   Kanapoi survey and, 125
   KNM-ER 1808 and, 239
   at Lothagam, 109, 119
   Meave’s collaborations with, 46, 50, 150–51
   skull discoveries and, 182, 219, 305
   Turkana Boy and, 231–36, 249, 289, 316
   The Wisdom of the Bones, 233
   walking versus running, 253–55
   Ward, Carol, 90, 152–55
   warthogs, 20
   watercrafts, 279
   The Weather Makers (Flannery), 257, 310
   Weidenreich, Franz, 210
   Weiner, Jonathan, 103
   Wells, Spencer, 323, 326, 327, 333
   Werdelin, Lars, 109
   Weston, Eleanor, 90
   West Turkana, 64–65, 270
   White, Tim
   Ardipithecus ramidus and, 148–50, 166, 168
   Australopithecus ghari and, 190
   Hadar and Laetoli fossils and, 136–37, 152, 155
   hill crawl method, 167–68
   H. sapiens fossils discovered by, 309
   Lomekwi skull and, 201
   single-lineage hypothesis and, 136–38, 171, 206, 207
   White House, 9–11
   Wildlife Conservation and Management Department, 55–58, 74
   Williams, Renata, 120–21
   Wilson, Alan, 63
   Winterson, Michael, 23, 24
   The Wisdom of the Bones (Walker), 233
   Wood, Bernard, 216, 255
   Woranso-Mille, 138
   wrist morphology, 281–82
   Wynn, Jonathan, 158
   Y
   Y chromosome, 326–27, 329
   Z
   Zagros mountain range, 276
   zebras, 29–30, 36, 244, 247, 290
   Zhoukoudian excavation, 209–10
   Zinjanthropus. See Dear Boy (skull)
   Zonneveld, Frans, 255
   About the Authors
   Maeve Leakey coheads field efforts in northern Kenya seeking fossil records to the roots of humankind. She has worked at the National Museums of Kenya since 1969 and is a research professor at Stony Brook University. She has been elected an honorary fellow of the Geological Society of London and inducted into the National Academy of Sciences in Washington, DC, was a National Geographic explorer-in-residence, served as a fellow of the African Academy of Sciences, and received the National Geographic Hubbard Medal, among many other accolades and achievements.
   Samira Leakey has degrees from the University of London and Princeton University. She lives in Kenya with her daughter.
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