The key discovery in this new specimen is a "radula-like organ" in the creature's foregut, with two rows of spiny teeth. Radulas are structures that mollusks like snails use to grind down their food.

Bristle worms have protrusions that act like a 3D printer, helping us to understand how cells regenerate. Most people will ...

What creature has had the sharpest teeth? By Deb Anderson. April 24, 2012 — 12.01am. ... except on a very small and high-resolution scale — to try to make 3D models of these conodont elements, ...