While there is obviously some variation in the teeth and jaws of
sauropods, they are on the whole pretty conservative when
compared to the theropods or ornithischians (none of them have
beaks for starters!). Rather peg-like clippers of one form or
another seem to be the main theme. This nice set of jaw piece
though does show that if nothing else, the size and number of
the teeth can be dramatically different across a jaw of
otherwise similar size. Here we have the multiple and very small
teeth of Nigersaurus (top), rather more robust, but still
ultimately long, thin and quite numerous teeth of Apatosaurus
(middle), and finally the much larger and more robust teeth of
Camarasaurus (bottom). Nigersaurus is especially nice and odd as
you can see the huge numbers of replacement teeth sitting in
situ the gives this an appearance that’s something like a dental
battery of a derived ornithischian.