Humber River fossil

[roy hutchcraft]

Can anyone I'd this fossil. I found it in the west Humber River Toronto near Islington.

[Thomas.Dodson]

Some kind of orthocone nautiloid. A lot of these you will need a view of the siphuncle to identify them further.

 

Any idea on the age or formation? @Kane might have some information.

[Kane]

Orthocone nautiloid, Ordovician, likely Georgian Bay Fm.

[Denis Arcand]

Nice 

[FossilDAWG]

Treptoceras.  A nautiloid cephalopod.  Nice find.

 

Don