25 foot prehistoric shark had spiral of teeth that worked like a Chainsaw
Ouch! Image at link.
A 25ft monster ‘shark’ with chainsaw teeth that roamed the prehistoric seas 270 million years ago has been revealed by scientists.
The bizarre fish Helicoprion, an early ancestor of sharks, had a conveyor belt of jagged teeth that spiralled out of its lower jaw and ripped prey to shreds.
Using state of the art scanners to create 3-D virtual reconstructions of its jaws, researchers have now discovered what the ancient beast would have looked like as it homed in on marine animals.
via Mail Online.