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Found in northern Ontario Canada

by Shannon
(Ontario, Canada)

My boyfriend works in a limestone rock quarry in northern Ontario (Canada)and found this today as he was chipping a rock ...any ideas what it is? Some of it is chipped

Comments for Found in northern Ontario Canada

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by: Douglas

My guess would be orthoceras. It's a little hard to tell because it is incomplete. Here are some things to check:
Is the cross section round?
If so Is there a spot in the center?
Look at this map:
Can you tell which color on the map contains the quarry?
This will tell you the age of the specimen.
Orthoceras lived primarily during the Ordovician and Silurian Periods.
Learn more about orthoceras here:

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