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Nannopterygius
''Nannopterygius '' (meaning ″small wing/flipper″ in Greek) is a genus of ophthalmosaurid ichthyosaur that lived in the Middle to Late Jurassic (Callovian to Tithonian stages).〔McGowan, C. & Motani, R. 2003. ''Ichthyopterygia''. ''In'' Sues, H.-D. Handbook of Paleoherpetology, vol. 8. Verlag Dr. Friedrich Pfeil, Munich, 175 pp., 19pls.〕 Fossils have been found in England and Germany.〔Maisch MW, Matzke AT. 2000. The Ichthyosauria. ''Stuttgarter Beiträge zur Naturkunde Serie B (Geologie und Paläontologie)'' 298: 1-159〕 The first specimen was found in the Kimmeridgian Kimmeridge Clay Formation of Kimmeridge Bay, Dorset, UK and described by Hulke in 1871, who named it ''Ichthyosaurus enthekiodon''.〔Hulke, J. W. Note on an ''Ichthyosaurus'' (''I. enthekiodon'') from Kimmeridge Bay, Dorset. ''Quarterly Journal of the Geological Society'', 27, 440–441, pl. 17.〕 A year earlier, Hulke had described some remains from the same horizon and locality that he thought were ichthyosaurian, naming them ''Enthekiodon'' (no species given).〔Hulke, J. W. Note on some teeth associated with two fragments of a jaw from Kimmeridge Bay. ''Quarterly Journal of the Geological Society'', 26, 172–174.〕 These are now lost, but Hulke considered them sufficiently similar to demote the name to species level.〔 In 1922, Huene separated this species into the new genus ''Nannopterygius'', named for the small fore- and hindpaddles.〔Huene, F. F. von 1922. ''Die Ichthyosaurier des Lias und ihre Zusammenhänge''. Verlag von Gebrüder Borntraeger, Berlin, 114 pp., 22 pls.〕
==See also==
* List of ichthyosaurs
* Timeline of ichthyosaur research
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