original description
Braun, A. (1851). Darstellung der geognostischen Verhältnisse des Mainzer Beckens und seiner fossilen Fauna und Flora. In: Walchner, F.A. (Ed.) Handbuch der Geognosie zum Gebrauche bei seinen Vorlesungen und zum Selbststudium mit besonderer Berücksichtigung der geognostischen Verhältnisse des Grossherzogthums Baden. Christian Theodor Gross, Karlsruhe, pp. 1121-1169.
page(s): 1126 [details]
From editor or global species database
Type locality Originally described from several localities in the Mainz Basin (Hackenheim, Petersberg, Sommerberg, Zeilstück near Weinheim). Kadolsky (2022) designated a lectotype, which supposedly derives from the Sulzheim Formation at Sommerberg near Alzey, but he argued that the material does not match the rest of the population found at that locality and concluded that the material might derive from Hackenheim instead. [details]