FIGURE 1. Composite images of fossil specimens from Solnhofen-type lithographic limestones. All parts of the images not displaying fossil substance were virtually removed, except for image 1.5. 1.1–3. Composites of the smaller juvenile of Cancrinos claviger Münster, 1839 (Öchselberg, Solnhofen Lithographic Limestones, Upper Kimmeridgian, Beckeri Zone, Ulmense Subzone); private collection of Matthias Wulf, Rödelsee. 1.1. Composite image with normal light. Image inverted. The pleon (pl) appears three-dimensional. 1.2. Composite with UV light. Note the antennulae (atl), antennae (ant) and tail fan (tf), which were not visible under normal light. 1.3. Combined image 1.1 projected on 1.2. 1.4–6. UV-fluorescence composite of the specimen of Sculda spinosa Kunth, 1870 (Nusplingen Lithographic Limestone, Upper Kimmeridgian, Beckeri Zone, Ulmense Subzone); collection of the Staatliches Museum für Naturkunde, Stuttgart (SMNS 63997/1). 1.4. Counterpart. 1.5. Part. Note the clear contrast between fossil substance and matrix, which allows virtual removal of the matrix. 1.6. Combination of 1.4 projected on 1.5. Note the amended shield (sh) and the uropodal exopod (ex).