Fig. 14 in The soft-tissue attachment scars in Late Jurassic ammonites from Central Russia

Fig. 14. Reconstruction of two Late Volgian ammonites from Craspeditidae family, Kachpurites fulgens (Trautschold, 1861) (A), Garniericeras catenulatum (Fischer, 1830) (B). Ten arms are shown because Nautilus and representatives of Coleoidea exhibit five arm pairs in embryos, it can be a base number of arms in Cephalopoda (Kröger et al. 2011). Two long tentacles are very speculative. However, such tentacles for external-shelled cephalopods could be very useful for catching pray which is at a distance; since rapid jumping forward could be difficult for these mollusks. The large hyponome was shown because of the presence of a funnel-locking apparatus and hyponomic retractors, and also due to the shape of aperture edges with lateral apertural sinuses and the presence of a large round opening between lappets in some ammonites (Westermann 1990: fig. 2). The eyes were drawn similar to coleoid eyes because Ammonoidea and Coleoidea were sister taxons (Jacobs and Landman 1993). The dark transverse bands on the shells correspond to the most common ammonites' color pattern (Keupp 2000). The presence of such a color pattern in the Craspeditidae family is confirmed by findings of shells with transverse dark bands (AAM unpublished material). This picture, drawn by Andrey Atuchin, was based on the sketch of the author of this article.