INDEX 



799 



Biomass (cont.) 



man, 641. 



rodents, 652. 

 Bipedalism, birds, 446. 



man, 646. 



reptiles, 416. 

 Birds, classification, 509. 



number, 432. 



origin, 510. 

 Bison, 761. 

 Bitterling, 266. 

 Blackbird, 522. 

 Blackcock, 502. 

 Bladder, actinopterygii, 202, 223. 



elasmobranchs, 163. 



reptiles, 381. 

 Blastomeryx, 755. 

 Blastula, amphioxus, 42. 



tunicates, 68. 

 Blennius, 237. 

 Blood, actinopterygii, 202. 



amphibia, 339. 



amphioxus, 34. 



Balanoglossus, 54. 



birds, 470. 



Ciona, 62. 



elasmobranchs, 162. 



hag-fishes, 124. 



Lampetra, 92. 



mammals, 766. 

 Blue fish, 251. 

 Blue whale, 672. 

 Boa, 413. 

 Bombinator, 354. 

 Bone, actinopterygii, 193. 



agnatha, 127, 129. 



birds, 437. 



placoderms, 187. 



types of, 195, 230. 

 Bone, Q., 33, 37. 

 Borhyaena, 565. 

 Bos, 761. 

 Bothriolepis , 186. 

 Botryllns, 70. 

 Bovidae, 760. 

 Bower-birds, 507. 

 Bow-fin, 235. 

 Brachiopoda, 49, 58. 

 Brachiosaurus, 423. 

 Brachycepfialus, 298. 

 Bradyodonts, 184. 

 Brady pus, 599. 

 Bradysaurus, 390. 

 Brady tely, 771. 

 Brain, aardvark, 704. 



actinopterygii, 209, 234. 



amphibia, 346. 



amphioxus, 39. 



artiodactyls, 744. 



birds, 477, 501. 



carnivora, 681. 



chelonia, 397. 



dinosaurs, 426. 



dipnoi, 279. 



earliest chordates, 766. 



edentates, 594, 601. 



elasmobranchs, 167. 



elephant, 713. 



eutherians, 576. 



horses, 722, 735. 



insectivora, 582. 



Lampetra, 10 1. 



Latimeria, 272. 



mammals, 576. 



man, 633, 650. 



marsupials, 561. 



monotremes, 554. 



Orycteropus, 704. 



platypus, 554. 



Polypterus, 234. 



primates, 604, 618, 630, 633, 650. 



reptiles, 383. 



sea cows, 721. 



seals, 692. 



synapsids, 542. 



ungulates, 697. 



whales, 671. 

 Brain waves, amphibia, 349. 

 Branchial skeleton, acanthodii, 187. 



actinopterygii, 196. 



amphibia, 330, 353. 



amphioxus, 25. 



Balanoglossus, 52. 



cephalaspids, 127. 



elasmobranchs, 145. 



lamprey, 87. 



mammals, 550. 



reptiles, 378. 



segmentation, 155. 



synapsids, 521. 



tunicates, 61. 

 Branchiosaurs, 361. 

 Branchiostoma, 25. 

 Bream, 247. 

 Breviceps, 360, 366. 

 Brontops, 730. 

 Brontosaurus, 423. 

 Brontotheres, 730. 

 Broom, R., 541. 

 Brown funnels (amphioxus), 36. 

 Budding, tunicates, 69, 72. 

 Buettneria, 359. 

 Bitfo, 298, 360, 365. 

 Bull, H. O., 225. 

 Bullock, T. H., 55. 

 Bull-head, 218. 

 Bush-baby, 613. 

 Bushmen, 649. 



