This block contains two specimens of Xipheroceras, both juveniles. The smaller specimen shows a bite mark opposite the aperture of the shell, at the back of the dark-coloured body chamber. If the body chamber is broken it is always broken just here, which is why this damage is considered to be bite marks. This is also the place inside the body chamber where the muscles would have been housed to hold the animal into the shell, so a tempting target.
Find out more about ammonites on the molluscs pages.