548 



INDEX 



Rensch, B., 326-327, 328, 363 



Repeat, see Duplication in chromosome 



Reproduction, bisexual, 420 



factors affecting, 355-356, 469 

 rateof, 352, 356, 357 

 Reptiles, 167-172 



age of, see Mesozoic era 



aquatic, 777, 185-186 



brains of, 32, 170 



compared to amphibians, 170 



excretion by, 92-93 



family tree of, 177 



first, 137, 166, 167 



flying, see Pterosaur 



of Galapagos Archipelago, 288-289 



hibernation of, 185 



mammal-like, see Therapsida 



on oceanic islands, 285-286 



skulls of, see Skull 



yolk sac of, 55 



See also Cotylosauria; Crocodile; 

 Crocodilians; Dinosaurs; Lizard; Or- 

 nithischia; Saurischia; Snakes; Tur- 

 tle 

 Reptilia, see Reptiles 

 Retina, pigment of, 104-106 

 Rettie, J. C, 140, 142 

 Reversion, 76-77 

 Rhinoceros, wooly, 128 

 Rhinoceroslike animal, hypothetical al- 

 lometry in, 406, 407, 408, 410-411, 

 413, 414-475, 417 

 Rhodesian man, 244 

 Rhodopsin, 104-106 

 Rhynchocephalians, 177 

 Ring test, 114-116, 114 



See also Precipitin test 

 Robb, 412 



Robertson, A., 476, 482 

 Robertson, J. D., 97, 100, 107 

 Robinson, J. T., 233, 235, 237, 255, 257 

 Rock, Archeozoic, 145 

 Cambrian, 143 

 igneous, 143 



metamorphic, 135, 145 » 



Proterozoic, 145 

 sedimentary, 130, 131 



See also Geologic record 

 Rocky Mountains, elevation of, 185 

 Rodentia, 266, 504 



classification of, 117-119, 310 

 first, 196 



hystricomorph, 119 

 South American, 119-120 



See also Mouse; Peromyscus; Rat 

 Rods and cones, 104 

 Roigneau, 46, 56 

 Romanes, 24, 42 



Romaschoff, 442 



Romer, A. S., 16, 18, 44. 78, 100, 108, 

 156, 157, 159, 167, 171, 172, 182, 

 192, 202, 212, 213, 214, 215, 217, 

 239, 240, 243, 257 



Rostrum, see Beaks, of insects 



Rothschild, 300, 301, 302, 303, 304 



Rowell, L. S., 169, 191 



Rufous phase, 375, 433 



Rushes, scouring, 164 



Rzasnicki, A., 323, 328 



Salamander, embryonic development of, 



46 

 Saldanha man, 244 

 Salmon, 106. 156 



migration of, 469-470 



reproductive rate of, 352 

 Salt, 80 



in blood, 94-95 



necessity for, 94-95 



See also Osmosis; Osmotic pres- 

 sure 

 Saltation, 504 

 Sarcopterygii, 158 

 Saurischia, 777. 179-182 

 Sauropoda, 181 

 Sayles, L. P., 44 

 Scale, bony, 153 



horny, 170 

 Scale tree. 164 

 Schepers. G. W. H., 256 

 Schleiden, M. J., 82 



Schmalhausen, I. I., 11, 19, 426, 466, 483 

 Schmidt, 276 

 Schmidt. K. P.. 454, 481 

 Schuchert, C, 148, 155, 156, 157, 158, 



159, 165,201 

 Schwann, T., 82 

 Scorpion, 137, 154, 757 



sea, see Eurypterid 

 Scott, W.B., 199,216,217 

 "Scud," see Garnmariis 

 Sea anemone, 72 

 Sea cow, limbs of, 29 

 Seal, 27, 28 



limbs of, 23-24, 29 

 Sea lily, see Crinoid 

 Sea lions, 28 



limbs of, 23-24 

 Sea scorpion, see Eurypterid 

 Sea urchin, 48. 102 

 Seeds, transportation of, 284, 285 

 Selection, stabilizing, see Natural selec- 

 tion, negative 



See also Artificial selection; Natu- 

 ral selection; Sexual selection 



