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USA (national)

Michigan State Stone

Polished Petosky stone - click to see all geological symbols
Petosky stone photo by Rmhermen on Wikipedia; published
under terms of the GNU Free Documentation license Version 1.2 or later.
All Geological Symbols - All State Fossils & Dinosaurs.

Petosky Stone

Petosky stone video

Michigan designated the Petoskey stone as the official "state stone" in 1965 (Petoskey stone is actually not a stone but fossilized coral). In prehistoric times (about 350 million years ago), Michigan was covered by a shallow sea that teemed with coral colonies. These beautiful fossils are what remains.

Petosky, Michigan - click to see all state fossils
Petosky, Michigan; photo by gbosic photography on Flickr (noncommercial use permitted with attribution, no derivative works). All Geological Symbols - All State Fossils.
Source:
Michigan Adventure! Discover Our State Symbols: MI.gov
The Petoskey Stone tells its Story: Michigan.gov
Links:
All Geological Symbols - All State Fossils & Dinosaurs


    

 

Michigan Symbols & Icons:

bird - mammal  
fish - reptile
flower - tree
wildflower
fossil - gem

flag - seal
name - nickname
motto - song
historical society
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Petosky Stone Video

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