the bedrock
limestone
fizzes in vinegar · it was a tropical reef
The tell
Soft enough that a knife or a steel nail cuts it, and a drop of vinegar fizzes on it. Very often full of broken fossil fragments if you look closely.
Most of the fossils on this list came out of limestone. If you are finding limestone you are in the right place to find a petoskey.
What it gets mistaken for
- sandstone
- banded chert
- kona dolomite
- dolomite
- chalk
The facts
- also calledfizzes in vinegar · it was a tropical reef
- age~385 million yrs
- where it turns upevery shore · bedrock north, float south
- the field markfizzes fast in vinegar · dolostone barely does
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