Fossil teeth show how a mass extinction scrambled shark evolution

The dinosaur-destroying event flipped which sharks were most dominant in the oceans

lemon shark underwater

SHARK TALE  After a mass extinction event about 66 million years ago, a group of sharks called carcharhiniformes, which includes the lemon shark (shown), became more abundant.

Doug Finney/flickr.com (CC BY-NC 2.0)

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Paleontology

From the Nature Index

Paid Content