Abstract
E. F. v. Schlotheim described 46 species of Jurassic and Cretaceous belemnites in 1813,1820, and 1832. Their type specimens are in part housed at the Humboldt University of Berlin. The holotype ofBelemnites irregularis is here refigured. Lectotypes forB. acuarius, B. canaliculatus, B. clavatus, B. giganteus, andB. tripartitus are designated and figured for the first time. The lectotype ofBelemnites giganteus is designated to be the neotype ofBelemnites suevicusKlein 1773. 36 species are nomina nuda and nomina dubia, because none of their type specimens could be detected, among them the invalidB. paxillosusv. Schlotheim 1820, which is, according to its lectotype designated herein, likeBelemnites giganteus, a junior synonym ofMegateuthis suevica (Klein 1773). An original type specimenof Belemnites mucronatusv. Schlotheim 1813, for which a neotype had already been ruled by the ICZN in 1985, was re-discovered in thev. Schlotheim collection in 1996.v. Schlotheim’s belemnites were up to now designated to be type species of 12 genera.
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