A woman taking a Memorial Day weekend stroll on a California beach found something unusual sticking out of the sand: a tooth from an ancient mastodon. But then the fossil vanished, and it took a media ...

A gigantic tooth that once belonged to an ancient mastodon was discovered, lost and then found again over Memorial Day weekend, after a tourist saw and photographed it on a California beach without ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. INDIANAPOLIS — The mastodon is breaking down ...

A jaw-dropping prehistoric discovery recently took place in the backyard of a New York home that Michigan residents might quickly recognize. A complete mastodon jaw fossil was found in the backyard of ...

Every so often, without swinging a pick or lifting a shovel, professional diggers discover scientific treasures. Browsing through the modest collections of amateur “rock hounds,” they have found many ...