A fishy find!
You’d be forgiven for thinking that these strange round objects are part of a Darlek from Doctor Who! But they are in fact a set of teeth that formed the inside palate of a fish mouth. Both the top and bottom of the mouth was armed in a similar way, forming a strong structure ideal for crushing sea shells and even sea urchins. Many fish today, including the cod, have near identical palates in their mouths.
Find out more on the fish page.