. Chordate anatomy. Chordata; Anatomy, Comparative. CHORDATE ANATOMY Nearly 50,000 species are known. Four sub-phyla are included in the phylum—Hemichorda, Urochorda, Cephalochorda, and Vertebrata. Sub-Phylum Hemichorda (Enteropneusta) The hemichordates or Enteropneusta hold a somewhat uncertain posi- tion in the animal kingdom. Morphologists are by no means agreed that their closest affinities are with the chordates. Some associate them with PENING OF /ANUS DORS. NERVE CX«D /NOTOCHORD. IBmnniiiiimiiiiiiiiiiiiiiiiimimrniiiiiiiiiniiMMiiririiiiiTiiiflfiininm A. LARVAL UROCHORDATE
. Chordate anatomy. Chordata; Anatomy, Comparative. CHORDATE ANATOMY Nearly 50,000 species are known. Four sub-phyla are included in the phylum—Hemichorda, Urochorda, Cephalochorda, and Vertebrata. Sub-Phylum Hemichorda (Enteropneusta) The hemichordates or Enteropneusta hold a somewhat uncertain posi- tion in the animal kingdom. Morphologists are by no means agreed that their closest affinities are with the chordates. Some associate them with PENING OF /ANUS DORS. NERVE CX«D /NOTOCHORD. IBmnniiiiimiiiiiiiiiiiiiiiiimimrniiiiiiiiiniiMMiiririiiiiTiiiflfiininm A. LARVAL UROCHORDATE GILL SLfTS' /DORSAL NERVE. 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 & Co.
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Keywords: ., bookcentury1900, bookpublisherphi, booksubjectanatomycomparative
