Extended Data Fig. 7: Fragments of coprolites (Krasiejów).
From: Digestive contents and food webs record the advent of dinosaur supremacy

ai, Coprolite fragment ZPAL AbIII/3520 that contains articulated beetles and many isolated beetle remains of Triamyxa coprolithica (see Qvarnström et al.29). aii, The most complete specimens. Note that fine details such as appendages and eyes are preserved. aiii, Beetle specimen with some parts of the dorsal part of the abdomen missing. aiv, Beetle without the head preserved. Note that the elytra are still attached. av, A slightly wider individual. avi, Beetle head and pronotum in articulation. avi, Beetle head and pronotum. avii, Beetle pronotum. aviii, Ventral thorax part of a beetle. aix, Some of the numerous elytra. ax, Possible wood fragment. bi, Specimen ZPAL AbIII/3521 with remains of beetles, fish and possibly algae. bii, Elytra. biii, Midline fish scale. biv, Possible moss. ci, Coprolite ZPAL AbIII/3526 with mineralized spherical structures. cii, Virtual thin section. di, Coprolite ZPAL AbIII/3523 with numerous plant remains and mineralized cracks and spherical structures. dii, Various plant cuticles. ei, specimen ZPAL AbIII/3525. eii, Elytron. eiii, Segmented elongated structure. Perhaps a plant remain or possibly flattened tapeworm proglottids. f, Specimen ZPAL AbIII/3519 with fish remains.