An investigation of a fossilized sawtooth shark’s rostral denticles (the “teeth” on the fish’s ... discover fungi in the saliva samples of children with severe tooth decay, but they ...
Most children have a full set of 20 milk or baby ... Learning more about shark teeth and how they regenerate could eventually teach us how to grow new human teeth in later life.
Although mating has never been scientifically observed, scars on female sharks suggest that males use their teeth to hold onto while mating. Based on their estimated growth rate, length and number ...