FIGURE 1. New lithostratigraphic terminology for the Ottnangian deposits of the OMM in Southwest Germany. Modified after Heckeberg et al. (2010).
FIGURE 2. Map showing the fossiliferous localities studied herein.
FIGURE 3. A. Tearing type [ Odontaspis molassica (Probst, 1878)]. Tooth height: c. 9. 8 mm. Locality: Messkirch-Walbertsweiler. Redrawn after Pfeil (1991, pl. 2, fig. 2). B. Tearing type [ Carcharias contortidens (Agassiz, 1843)]. Tooth height: c. 17. 9 mm. Locality: Messkirch-Walbertsweiler. Redrawn after Pfeil (1991, pl. 2, fig. 3, named here as “ Synodontaspis acutissima ”). C. Cutting type - sensu stricto cutting subtype [ Galeocerdo aduncus (Agassiz, 1843)]. Tooth width: c. 14. 2 mm. Locality: Messkirch-Walbertsweiler. Redrawn after Pfeil (1991, pl. 3, fig. 16). D. Cutting type - sensu stricto cutting subtype [ Otodus (Megaselachus) chubutensis (Ameghino, 1901)]. Tooth height: c. 65 mm. Locality: Messkirch-Walbertsweiler. Redrawn after Pfeil (1991, pl. 2, fig. 10, named here as “Procarcharodon megalodon”). E. Cutting type - cutting-clutching subtype [ Carcharhinus similis (Probst, 1878)]. Tooth height: c. 12. 9 mm. Locality: Baltringen. Redrawn after Probst (1878, pl. 1, fig. 19), Size according to Reinecke et al. (2011, Text-Fig. 21). F. Cutting type - cutting-clutching subtype [ Paragaleus tenuis (Probst, 1878)]. Tooth height: c. 4 mm. Locality: Messkirch-Walbertsweiler. Redrawn after Pfeil (1991, pl. 3, fig. 8). G. Crushing type [ Dasyatis rugosa (Probst, 1877)]. Tooth height: c. 3 mm. Locality: Messkirch-Walbertsweiler. Redrawn after Pfeil (1991, pl. 4, fig. 9)]. H. Crushing type [ Rynchobatus pristinus (Probst, 1877)]. Tooth height: c. 4 mm. Locality: Baltringen. Redrawn after Probst (1877, pl. 1, fig. 19)]. I. Clutching type [ Pachyscyllium dachiardii (Lawley, 1876)]. Tooth height c. 6 mm. Locality: Ursendorf. Redrawn after Höltke et al. (2020, pl. 7, fig. 1]. J. Clutching type [ Ginglymostoma delfortriei Daimeries, 1889)]. Tooth width. c. 7. 6 mm. Locality: Baltringen. Redrawn after Pfeil [1991, pl. 2, fig. 1 named here as “ Ginglymostoma grandis ”). K. Grinding type [ Aeobatus arcuatus (Agassiz, 1843)]. Tooth width. C. 14 mm. Locality: Ursendorf. Redrawn after Höltke et al. (2020, pl. 9, fig. 8). L. Grinding type [ Rhinoptera cf. studeri (Agassiz, 1843). Tooth width: c. 23 mm. Locality: Ursendorf. Redrawn after Höltke et al. (2020, pl. 9, fig. 11).
FIGURE 4. Generalized trophic interaction scheme of the five OMM deposits discussed in this paper. Some of the fish feeding taxa also feed on invertebrates. A definitive separation in exclusive fish and invertebrate feeders is often not possible. The same problem exists for members of the shark genus Isistius, which are ectoparasites of large marine animals but also feed on cephalopods.
FIGURE 5. Similarity analyses (cluster analyses) of the shark and ray fauna of the OMM deposits in Baden-Württemberg, Bavaria and Switzerland. Redrawn after Höltke et al. (2020; 2022b).
