Fig. 5 in The soft-tissue attachment scars in Late Jurassic ammonites from Central Russia

Fig. 5. Lateral attachment structures on Kachpurites cheremkhensis Mitta, Michailova, and Sumin 1999 shells from Late Volgian (Kachpurites fulgens Zone), Yaroslavl region, Cheremukha locality. A. MSU 113/3, whole shell with a scar at the middle section of the body chamber and a lateral sinus, which is located ventro-laterally not far from the aperture. B. MSU 113/10, shell with the apertural part of the body chamber not preserved, the scars are slightly asymmetric. C. MSU 113/36, fragment of the body chamber of ribbed macroconch, with scars on both sides of the shell. The scar demonstrate ventro-lateral projection on its front part. Asterisks mark the base of the body chamber. Photographs (A1–C1) and explanatory drawings (A2–C2).