An example would be alligators that only have one type/shape of tooth. Not the variation in function and shape like seen in humans, which have canines, molars, incisors, etc



You can find the term "homodont" used in Lambert et al. (2014) or on wikipedia > dentition for examples. The opposite of homodont is heterodont (wikipedia > heterodont). In mammals, a classical example of homodonts is the dolphin.

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    $\begingroup$ to reinforce heterodont dentition is fairly rare, only mammals with their limited number of teeth have it constantly across a large clade. $\endgroup$ – John Apr 25 '18 at 19:11

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