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| | †Plesiosauria |
 | | †Aptychodon Reuss, 1855 †“Plesiosaurus” ichthyspondylus †“Plesiosaurus” balticus †“Cimoliasaurus” cantabrigiensis †Discosaurus Leidy, 1852 †Dravidosaurus blanfordi Yadagiri and Ayyasami, 1979 [regarded as a stegosaur by the original descriptors] †Orophosaurus Cope, 1887 †Pantosaurus Marsh, 1893 †Piptomerus Cope, 1887 [nomen dubium] †Piratosaurus Leidy, 1865 [nomen dubium] |
 | | Maisch, M. and Rücklin, M., 2000: Cranial osteology of the sauropterygian Plesiosaurus brachypterygius from the Lower Toarcian of Germany. |
 | | Storrs, G. W., 1997: Morphological and taxonomic clarification of the genus Plesiosaurus. |
| www.fmnh.helsinki.fi /users/haaramo/metazoa/Deuterostoma/Chordata/Reptilia/Sauropterygia/Plesiosauria.htm (308 words) |
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