Snakes from Griesbeckerzell (Langhian, Early Badenian), North Alpine Foreland Basin (Germany), with comments on the evolution of snake faunas in Central Europe during the Miocene Climatic Optimum Author Ivanov, Martin Author Böhme, Madelaine text Geodiversitas 2011 2011-09-30 33 3 411 449 http://dx.doi.org/10.5252/g2011n3a2 journal article 10.5252/g2011n3a2 1638-9395 5378171 Genus Vipera Laurenti, 1768 TYPE SPECIES. — Vipera aspis (Linnaeus, 1758) .