News of the WeekPaleontology

Primitive Jawed Fishes Had Teeth of Their Own Design

See allHide authors and affiliations

Science  21 Feb 2003:
Vol. 299, Issue 5610, pp. 1164
DOI: 10.1126/science.299.5610.1164a

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


On page 1235, researchers present evidence that teeth evolved independently in a group of extinct jawed fishes called the placoderms, not just once, in the common ancestor of jawed vertebrates, as has been assumed. The finding doesn't reveal how teeth came about, but if they evolved more than once, scientists may need to shake up a significant portion of the vertebrate family tree.