Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
Compare cell phone plans using Wirefly's innovative plan comparison tool ×
Science

Submission + - Jawless creature had the world's sharpest teeth (nature.com)

ananyo writes: An extinct primitive marine vertebrate had the sharpest dental structures ever known — with tips just one-twentieth of the width of a human hair, but able to apply pressures that could compete easily with those from human jaws (http://www.nature.com/news/jawless-vertebrate-had-world-s-sharpest-teeth-1.10211).

The razor-sharp teeth belonged to conodonts, jawless vertebrates that evolved some 500 million years ago in the Precambrian eon and went extinct during the Triassic period, around 200 million years ago. The creatures roamed the planet for longer than any other vertebrate so far–– and despite their lack of jaws, they were the first creatures to evolve teeth ( abstract http://dx.doi.org/10.1098/rspb.2012.0147).

This discussion was created for logged-in users only, but now has been archived. No new comments can be posted.

Jawless creature had the world's sharpest teeth

Comments Filter:

"Life begins when you can spend your spare time programming instead of watching television." -- Cal Keegan

Working...