These chunks of fossilized coral keep us enchanted—and endlessly searching. If you’re from Michigan, you understand the lure of the Petoskey stone. When rock hunting along Lake Michigan’s ...

Even though they’re found in the Great Lakes, Petoskey stones are actually fossilized coral. ... but it’s still possible to find rough Hexagonaria fossils in some Northern Michigan rock quarries.

These cool looking Petoskey stones, found on Great Lakes beaches, are actually fossilized ancient coral that lived 350 million years ago—before dinosaurs even—when Michigan was covered in a ...

I studied geology so recognized it as a limestone with coral fossils in it." "It looked like an extinct solitary or horned coral of the Carboniferous Period—over 300 million years old.

Scientists at the Denver Museum of Nature and Science discovered a 67 million-year-old dinosaur fossil hidden under their ...

DETROIT (AP) - A 93-pound Petoskey rock illegally removed from Lake Michigan will be permanently displayed in Detroit. ... It's considered a fossilized coral. When wet or polished, ...

Petoskey, Michigan's state stone, is fossilized coral that lived in the warm, shallow seas covering Michigan during the Devonian era about 350 million years ago.

A Michigan rock hunter pulled a 93-pound fossilized coral stone out of Lake Michigan on Tuesday. When Tim O'Brien of Copemish, Mich., spotted the massive Petoskey stone a week ago, it was buried ...

Some people might confuse the Charlevoix stone, a similar type of fossilized coral, for a Petoskey stone at first. “The Charlevoix stone is the much smaller, tighter pattern,” Shorter said.

DETROIT (AP) — A 93-pound (42-killogram) Petoskey rock illegally removed from Lake Michigan will be permanently displayed in Detroit. ... It’s considered a fossilized coral.