Figure 2
From: Predatory behaviour and taphonomy of a Jurassic belemnoid coleoid (Diplobelida, Cephalopoda)
Passaloteuthis bisulcata, as displayed at the Urweltmuseum in Holzmaden, Germany, Toarcian. The specimen is complete preserving its rostrum, phragmocone (partially ontop of the rostrum), proostracum, phosphatized soft-tissue remains, arms with hooklets and the ink sac at the side of the rostrum. Its somewhat upended appearance can be explained by its taphonomical history, where the carcass sank into the unconsolidated sediment with the rostrum first and the other parts obliquely above it. This corroborates that the rostrum density was high during life already.
