ADVERTISEMENT
  About the SA Blog Network

Posts Tagged "sawtooth"

Symbiartic

The Hypnotic Whorl of Teeth That Keeps Researchers Guessing

14-004FEATURE

How many facelifts can one extinct animal undergo? The answer is probably equal to the number of interested researchers and paleoartists out there, and then some. In the case of the mysterious whorled tooth rows left behind by the fossil fish known as Helicoprion, artist Ray Troll has documented close to two dozen, many of [...]

Keep reading »

More from Scientific American

Scientific American Special Universe

Get the latest Special Collector's edition

Secrets of the Universe: Past, Present, Future

Order Now >

X

Email this Article

X