Human teeth traced to fish scales, Cambridge scientists say

Human teeth traced to fish scales, Cambridge scientists say
 

Teeth grew from the scales of primitive shark-like fish millions of years ago, research by scientists suggests.
Old lineage cartilaginous fish like sharks, skates and rays that have skin which contained small spiky scales or "dermal denticles" may be the key, scientists say.
Cambridge University said their tooth-like appearance is no accident.
Researchers suggest it may be a direct link between us and marine ancestors from up to 400 million years ago.
During early evolution of jawed vertebrates, dermal denticles were transferred from the skins of primitive fish to their mouth.
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20 November 2017 in Regional, Views: 50
Source: BBC
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