Found on shores of Lake Ontario (Devonian?).

[Humphr67]

This conical, segmented, fossil was picked up off the shores of Lake Ontario in rocks that contain a lot of bryozoan and crinoid fragments.  I think it is Devonian, but could someone help me confirm that, and help me understand what this fossil might be?  

[ynot]

The fossil is an orthocone nautiloid. Nice find.

[Fossildude19]

I agree, orthocone cephalopod. 

 

     

 

Regards,

[Kane]

It may also likely be Ordovician in age and not Devonian as most of the Lake Ontario outcrops are predominantly Ordovician with occasional tributary drift of Silurian age rocks. 

[Humphr67]

Thank you all, for you informative and prompt responses.  How exciting, indeed.  Thank you!