Leptosaurus is a genus of Sphenodontia from the Late Jurassic of Bavaria, southern Germany.[Goldfuss A. (1831): Beiträge zur Kenntniss verschiedener Reptilien der Vorwelt.– Nova Acta Physico-Medica Academiae Caesareae Leopoldino-Carolinae Naturae Curiosorum 15: 61–128.]
Kallimodon, at times synonymized with Leptosaurus, is actually a distinct genus more closely related to Sapheosaurus.[Rauhut O. W. M., Heyng A. M., López-Arbarello A. & Hecker A. (2012): A new rhynchocephalian from the Late Jurassic of Germany with a dentition that is unique amongst tetrapods. PLoS ONE 7: e46839.][Oliver W. M. Rauhut & Adriana López-Arbarello (2015) Zur Taxonomie der Brückenechse aus dem oberen Jura von Schamhaupten. On Archaeopteryx
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