File:Comparative zoology, structural and systematic. For use in schools and colleges (1880) (20482409708).jpg

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Title: Comparative zoology, structural and systematic. For use in schools and colleges
Identifier: comparativezoolo00orto (find matches)
Year: 1880 (1880s)
Authors: Orton, James, 1830-1877
Subjects: Zoology
Publisher: New York, Harper and brothers
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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Fio. 27.—Teeth and Masticatory Apparatus of Gastero- pods : A, jiortioD of odontophore, or " tongue," of Vel- utina, enlarged; B, portion of odontophore of Whelk (Duceinnm imdattim), magnified —the entire tongue has 100 rows of teeth; C, head and odon tophore of Lim- pet (Patella vtdgata); D, portion of same, greatly mag- nified, to show the transverse rows of siliceous teeth. lusks, or the Snails, is general- ly lingual, i. e., it consists of microscopic teeth, usually si- liceous and amber - colored, planted in rows on the tongue. The teeth are, in fact, the ser- rated edges of minute plates. The number of these plates varies greatly; the garden Slug has 160 rows, with ISO teeth in each row. All Birds, and some other Vertebrates, as Ant - eaters,'" Turtles, Tortoises, Toads, and Sturgeons, have no teetli. Their absence is generally associated with a horny beak, a wide gullet, and a muscular stomach (gizzard). In a few Vertebrates, horny plates take the place of teeth, as the Duck Mole (Ornitho- rliynchus) and Whalebone
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Flickr tags
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  • bookid:comparativezoolo00orto
  • bookyear:1880
  • bookdecade:1880
  • bookcentury:1800
  • bookauthor:Orton_James_1830_1877
  • booksubject:Zoology
  • bookpublisher:New_York_Harper_and_brothers
  • bookcontributor:Smithsonian_Libraries
  • booksponsor:Smithsonian_Libraries
  • bookleafnumber:70
  • bookcollection:biodiversity
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
Flickr posted date
InfoField
18 August 2015


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current06:55, 20 September 2015Thumbnail for version as of 06:55, 20 September 2015244 × 240 (21 KB) (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Title''': Comparative zoology, structural and systematic. For use in schools and colleges<br> '''Identifier''': comparativezoolo00orto ([https://commons.wikimedia.org/w/index.php?title=Sp...

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