Jaws and teeth Sperm whale

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the lower jaw long , narrow. teeth fit sockets along upper jaw.


the sperm whale s lower jaw narrow , underslung. sperm whale has 18 26 teeth on each side of lower jaw fit sockets in upper jaw. teeth cone-shaped , weigh 1 kilogram (2.2 lb) each. teeth functional, not appear necessary capturing or eating squid, well-fed animals have been found without teeth or deformed jaws. 1 hypothesis teeth used in aggression between males. mature males show scars seem caused teeth. rudimentary teeth present in upper jaw, these emerge mouth. analyzing teeth preferred method determining whale s age. age-rings in tree, teeth build distinct layers of cementum , dentine grow.








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