Paleobiology: A Tooth for a Tooth.
Many vertebrates replace teeth through shedding of the functional tooth. New analyses of a fossil fish demonstrate that shedding involved tooth resorption, a primitive feature in bony fishes, but absent in sharks and their relatives.
Department of Earth Sciences, Natural History Museum, London SW7 5BD, UK. Electronic address: z.johanson@nhm.ac.uk.
Zerina
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Johanson
D000818:Animals; D005075:Biological Evolution; D005399:Fishes; D005580:Fossils; D010802:Phylogeny; D012754:Sharks; D014070:Tooth; D014714:Vertebrates