The Petoskey stone is Michigan's state stone. The stone is a fossilized tan-gray arrangement of colony coral that dates back about 350 million years. It has a shiny, hexagonal pattern when ...

DR. VON LENDENFELD'S account of the dolomites of the Italian Tyrol, in his letter on “Coral Reefs, Fossil and Recent,” is a very valuable contribution to this interesting question; but I think ...

The stone is submerged, making the fossilized Hexagonaria coral, also known as Petoskey ... Most of it is Traverse limestone with the fossil attached to it. “Most are pebble size, and it is ...

Charlevoix stone coral belongs to the now-extinct genus Favosites ... state law prohibits individuals from taking more than 25 pounds of rocks, fossils or minerals per year from state parks ...

(Paleo) Joe Kchodl, a fossil expert who sets up natural-history exhibits across the state, said that the 93-pound stone of fossilized coral is indeed "rare to find." But he pointed the Free Press ...

It’s home to 76% of all known coral species, as well as numerous endangered marine species. See All Key Ideas Fossil fuel projects are putting the Pacific Coral Triangle’s unique marine ...

Petoskey stone corals existed about 390 million years ago, according to Backyard Fossils. Other corals and coral-like animals that now are abundant fossils include the Charlevoix stone ...

After hunting for answers online, Mr Singh was told the fossil's markings on the relic indicated it was most likely a Rugosa coral, estimated to be between 251 to 488 million years old.

Researchers have found the strongest evidence yet that aerosols from burning fossil fuels are affecting coral growth. They say that these sooty particles can cool sea surface temperatures and ...