Figure 1 in Eggs for breakfast? Analysis of a probable mosasaur biting trace on the Cretaceous echinoid Echinocorys ovata Leske, 1778

Figure 1. The large deposit-feeding echinoid Echinocorys ovata (MB.E. 6565) from the lower Maastrichtian (Late Cretaceous) of Hemmoor, exposing biting traces: (a) oral surface (posterior to the right) with four tooth punctures (P1–P4); the anterior part of the test is not preserved. (b) Enlarged oblique view showing the broad linear score emanating from P4. (c) Enlarged view showing details of puncture shape and regeneration features of P1 (left) and P2 (right). Note slightly irregular outline of P2 due to chipping. Note that the echinoid's periproct is of comparable size and shape and should not be confused with the punctures.