An artist's rendering of Astraspis and Megalograptus, which had sensory exoskeletons. (Image courtesy of Brian Eng)
Researchers claim our sensitive teeth originally evolved from the 'armour' of extinct fish that lived 465 million years ago.
In a new study, scientists have shown how sensory tissue found on the exoskeletons of ancient fish is linked to the same “genetic toolkit” responsible for forming human teeth.
“This shows that ‘teeth’ can also serve a sensory function even when they are not in the mouth,” study co-author Yara Haridi, a paleontologist and evolutionary biologist at the University of Chicago, said in a statement. Haridi and her colleagues published their findings Wednesday (May 21) in the journal Nature.
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