Sculda pusilla Kunth, 1870 is, until now, exclusively known from a single specimen [12, 13, 14] (Fig. 2.15). We have two more possible conspecific specimens. Sculda pusilla differs from the other two species in having no dorsal surface ornamentation, but is rather smooth [12]. This character causes problems, as all smaller specimens lack such ornamentation, and if this was indeed a reliable diagnostic character for S. pusilla, this species might, in fact, be the most abundant one in the Solnhofen Lithographic Limestones. Whether lack of dorsal surface tuberculation is a preservational or an ontogenetic effect remains unclear to us at the moment (possibility of an ontogenetic effect was rejected by Kunth 1870). We refer to the larger specimens (>15 mm) that lack surface ornamentation as ?Sculda pusilla, and to small specimens (