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Journal of the Geological Society; February 1989; v. 146; no. 1; p. 37-40; DOI: 10.1144/gsjgs.146.1.0037
© 1989 Geological Society of London
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Article

Plesiosaur locomotion

L. B. HALSTEAD

Departments of Geology and Pure and Applied Zoology, University of Reading, Reading RG6 2AB, UK

Plesiosaurs are unique in being the only underwater fliers with four ‘wings’, and how the two pairs worked in relation to one another is a matter of some controversy. Newman's hypothesis of porpoising seems to provide a possible solution.

Any discussion of plesiosaur locomotion must take into account the different modes of plesiosaur life: the long-necked forms were fish-eating surface paddlers and the short-necked were diving cephalopod feeders.






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