Jump to content
Humphr67

Unidentified fossil from the shore of northwestern Lake Ontario [Silurian?].

Recommended Posts

Humphr67

I collected this while walking along the shore of Lake Ontario just west of downtown Toronto. I am at a loss. Any help would be greatly appreciated.  Thanks so much.

E127EEFD-35BB-41F4-95D2-47DF77F12EF4.jpeg

8ADFDC45-8754-4BEF-A11D-B5D17AB203EF.jpeg

Share this post


Link to post
Share on other sites
Monica

@Humphr67

 

Hi there, and welcome to the forum!

 

I think what you have are bryozoans - if you look really closely you might be able to see tiny holes - the individual zooids would have resided within these holes.

 

Monica

Share this post


Link to post
Share on other sites
Humphr67

Hi Monica, thanks for your response.  I have a lot of bryozoan fossils from the area and these don’t seem to resemble any of them.  The images are not great but there are no holes in the fossils, and  while the bryozoans are more amorphous, this seems to have a well defined shape (see the fish-tail shape in the top image). You may be right, but not convinced.  Thanks again.  

Alex

Share this post


Link to post
Share on other sites
JohnBrewer

Hi Alex, welcome to the forum!

 

Can’t help, not really my era but I believe @Monica @Malcolmt @Kane collect from that era and reside in Canada. Yeah, I know it’s a huge country!

 

To get a good chance of an id you will need to get some much more detailed close up images preferably with a metric scale. 

 

:) 

Share this post


Link to post
Share on other sites
Kane

I would need to see a closer and more detailed image. Preliminary guess would be worn section of rugose coral. Zooming in on the image you have here, I think I can make out striations that may confirm my hunch.

Share this post


Link to post
Share on other sites
Monica
1 hour ago, Humphr67 said:

Hi Monica, thanks for your response.  I have a lot of bryozoan fossils from the area and these don’t seem to resemble any of them.  The images are not great but there are no holes in the fossils, and  while the bryozoans are more amorphous, this seems to have a well defined shape (see the fish-tail shape in the top image). You may be right, but not convinced.  Thanks again.  

Alex

 

There are many different bryozoans around here - it's pretty amazing!  I've even found ones that are bumpy on the outside - very cool!

 

Oh, and by the way - your specimen is likely from the Upper Ordovician, unless it has come from further west of the GTA...

 

 

Share this post


Link to post
Share on other sites
WhodamanHD

Just to add a pinch of confusion to the pot, I think it looks like a cross section of a brachiopod or bivalve.

Share this post


Link to post
Share on other sites
Tidgy's Dad

Yes, shell of a brachiopod or pelecypod for me, too. 

Share this post


Link to post
Share on other sites
Innocentx

If you could get an excellent close up of the area circled in red, that would help. I am also seeing bryozoan here.

copy.jpeg

Share this post


Link to post
Share on other sites
Rockwood

It looks like there may be a fracture near your thumb in the upper photo. I would consider splitting it open to perhaps expose a more diagnostic surface. 

What we're seeing so far could be just calcite crystals.

Share this post


Link to post
Share on other sites
Humphr67

Somewhere I have a handheld digital microscope and will try to get a good closeup.  I will post it when I get the chance.  

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Recently Browsing   0 members

    No registered users viewing this page.

×