fossil
chain coral
Halysites sp.
The tell
The cells are joined in CHAINS, like chain-link fence seen from above, with open space between the links. Petoskey cells all touch.
Silurian, about 430 million years, which makes it older than every other fossil on this chart. Drummond Island is the place.
What it gets mistaken for
- petoskey stone
- charlevoix
- branching coral
- honeycomb coral
The facts
- also calledHalysites sp.
- age~430 million yrs
- where it turns upDrummond & eastern UP ยท float south
- on the chartfossil · 500 stickers ever
Put it on the shelf
Every stone on this chart is drawn and kiss-cut at three inches. The rarer the stone, the fewer exist: only 500 chain coral will ever be printed, then the run is retired.
10% of every order goes to the Roscommon County Animal Shelter.