. Comparative anatomy. Anatomy, Comparative. FLATWORMS. DRYOPITHECUS LEMUROIDS 'MARSUPIALS •THEROMORPHS CROSSOPTERYGIANS ELASMOBRANCHS CEPHALOCHORDS HEMICHORDS ECHINODERMS OELENTERATES SPONGESv PROTOZOA Fig. 540.—A diagram of the phylogenesis of man, based on the assumption that the Protochordates resemble vertebrate ancestors more closely than do the annelids. Annelids and other Proterostomians have, it is assumed, diverged from the main line of vertebrate ancestry very early in animal phylogenesis. Before man emerged in the late Tertiary transitional forms between man and the lower Primates
. Comparative anatomy. Anatomy, Comparative. FLATWORMS. DRYOPITHECUS LEMUROIDS 'MARSUPIALS •THEROMORPHS CROSSOPTERYGIANS ELASMOBRANCHS CEPHALOCHORDS HEMICHORDS ECHINODERMS OELENTERATES SPONGESv PROTOZOA Fig. 540.—A diagram of the phylogenesis of man, based on the assumption that the Protochordates resemble vertebrate ancestors more closely than do the annelids. Annelids and other Proterostomians have, it is assumed, diverged from the main line of vertebrate ancestry very early in animal phylogenesis. Before man emerged in the late Tertiary transitional forms between man and the lower Primates made their appearance. Among these the best known are Propliopithecus, Dryopithecus and Australopithecus, which are true "connecting ; chordates can be found which resemble larval chordates. Thus the chordate clue seems to lead us into a blind alley out of which the most promising exit is the way Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : P. Blakiston's Son
Size: 952px × 2626px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookpublisherphi, booksubjectanatomycomparative
