Autochthonous clusters of probable gastropod spawns with pyritized egg capsules, each of about 1 mm in diameter, found in the Late Pliensbachian claystones (Amaltheenton Facies) of Buttenheim. A, B: Attached on the surface of a carbonatic concretion of the EPH (from Keupp et al. 2016b, SNSB-BSPG 2014 XXV 332). C: Three-dimensional preserved egg capsules on the shell of Pleuroceras spinatum, image width 11 mm (from Keupp 2021b). D: Covering the navel of Pseudamaltheus engelhardti from the EPH (from Keupp and Doppelstein 2018). E, F: On the belemnite rostrum of Passaloteuthis sp., at the transverse fracture of the surrounding concretional limestone, the lens-shaped configuration of the egg capsules is visible (arrow) (from Keupp 2021b, SNSB-BSPG 2011 XI 1333).