File:Image from page 100 of "Water reptiles of the past and present" (1914) (14586297750).jpg
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[edit]DescriptionImage from page 100 of "Water reptiles of the past and present" (1914) (14586297750).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. 42.—Restoration of Trinacromerum, a Cretaceous plesiosaur; length aboutten feet. bones in their relative positions, and with impressions of skin andoutlines of body made before decomposition. Though our knowl-edge of the external appearance of the plesiosaurs when alive isperhaps not as full as we could wish, it is sufficient to give us a fairlygood conception of what the animals really were. The skin wassmooth and bare, without scales or plates of any kind, and Dameshas described a terminal or nearly terminal fleshy dilatation of thetail, forming a sort of caudal fin, which may have aided as a steeringapparatus. Mounted skeletons are preserved in a few museums,notably the British Museum, the American Museum of New YorkCity, and the museum of the University of Kansas. Many nearly QO WATER REPTILES OF THE PAST AND PRESENT complete skeletons, however, preserved as they were found in thematrix, are shown in various museums. With these principal facts regarding the structure, size,
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Source | Image from page 100 of "Water reptiles of the past and present" (1914) |
Author | Internet Archive Book Images |
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