File:Image from page 168 of "Water reptiles of the past and present" (1914) (14792921453).jpg
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[edit]DescriptionImage from page 168 of "Water reptiles of the past and present" (1914) (14792921453).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. 74.—Clidastes; left front paddle: Fig. 75.—Tylosaurus; left front paddle: c, coracoid; h, humerus; r, radius; sc, c, coracoid; sc, scapula; h, humerus; r,scapula; it, ulna. radius; u, ulna. which the wrists and ankle bones had become cartilaginous in greatpart, as many as eleven phalanges have been observed in the longesttoes, though in other forms, those with more completely ossifiedwrists and ankles, only two or three additional bones have beendeveloped in the longest fingers and toes by aquatic habits. The i58 WATER REPTILES OF THE PAST AND PRESENT pliability and flexibility of the fingers and toes were certainly verygreat, but they could .not possibly have been flexed or bent soas to grasp or seize anything; and of course all vestiges of clawshad disappeared. Many specimens have been found with all thebOnes of the limbs, that is, the paddle bones, in the positions they occupied when the animalsdied. Figures of three suchspecimens, made from photo-graphs or careful drawing
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Source | Image from page 168 of "Water reptiles of the past and present" (1914) |
Author | Internet Archive Book Images |
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