File:Image from page 35 of "Water reptiles of the past and present" (1914) (14792838253).jpg
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[edit]DescriptionImage from page 35 of "Water reptiles of the past and present" (1914) (14792838253).jpg |
Identifier: waterreptilesofp1914will Title: Water reptiles of the past and present Year: 1914 (1910s) Authors: Williston, Samuel Wendell, 1851-1918 Subjects: Aquatic reptiles Publisher: Chicago, Ill., The University of Chicago Press Contributing Library: Boston Public Library Digitizing Sponsor: Boston Public Library
Click here to view book online to see this illustration in context in a browseable online version of this book.
Text Appearing After Image: Fig. 8.—Sphenodon (tuatera). Skull from side and above: pm, premaxilla;n, nasal; prf, prefrontal; /, frontal; pf, postfrontal; p, parietal; po, postorbital;sq, squamosal; m, maxilla; j, jugal; qj, quadratojugal; q, quadrate; c, coronoid;sa, surangular; art, articular; pa, prearticular; d, dentary; an, angular. of this region of the skull offers important and reliable charactersfor the classification of the reptiles into the larger groups, but,unfortunately, we are very uncertain yet as to what this classi-fication should be. We are confident that all those reptiles havingtwo temporal vacuities on each side are related to each other; weare yet very much in doubt as to the classification of all otherreptiles, or at least all others having-only a single temporal vacuityon each side. Better evidences of relationships, or the absence of relation-ships, are offered by the presence of certain bones in the skullsin some orders that are lost in others, since it may be accepted as THE SKELETO
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Source | Image from page 35 of "Water reptiles of the past and present" (1914) |
Author | Internet Archive Book Images |
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