As nouns the difference between mammal and protocone
is that mammal
is an animal of the class mammalia, characterized by being warm-blooded, having hair and feeding milk to its young while protocone
is (anatomy) a cusp in the corner of an upper molar tooth in mammals.
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An animal of the class Mammalia, characterized by being warm-blooded, having hair and feeding milk to its young.
(paleontology) A vertebrate with three bones in the inner ear and one in the jaw.
* See also