Fig. 6 in Evolution and classification of Mesozoic mathildoid gastropods

Fig. 6. Type species and examples for Jurassic genera of the family Gordenellidae. A, B. Gordenella pommerana (Schmidt, 1905), Kłęby (formerly Klemmen), Poland, late Oxfordian. A. From Gründel (2000: pl. 1: 8). B. From Gründel (2000: pl. 1: 11). C. Turritelloidea opalina (Quenstedt, 1852), Mistelgau, Germany, late Toarcian, see also Gründel (2005: figs. 2/1, 3). D. New genus, new species to be described elsewhere, Buttenheim, Germany, late Pliensbachian; whole specimen (D1), early whorls (D2).