 Modern carnivorous bats generally lack true carnassial teeth, but the extinct "Necromantis" had particularly convergent teeth, in particular M1 and M2, which bore expanded heels and broad stylar shelves.These were particularly suited for crushing over an exclusively slicing action.Though not superficially similar, the triconodont teeth of some early mammals such as eutriconodonts are thought to have had a function similar to those of carnassials, sharing a similar shearing function.