Jump to content
Sign in to follow this  
Deb in Michigan

calcareous sponge spicules

Recommended Posts

Deb in Michigan

I have read that finding spicules preserved in sponge is quite rare.  I am finding sponge fossils with what I believe are spicules, but the fossils seem to be all calcium carbonate, no silica. 
this seems to me to show the original sponge body was aragonite or calcite based.  This was found on the north eastern side of the tip of the Mitt in Michigan  The area is considered Middle Devonian, but these were found on the shore of Lake Huron, so there is also the possibility that they are glacial transports.    Comments welcome. 

IMG_1261 (2).JPG

Share this post


Link to post
Share on other sites
Deb in Michigan

spicules seem to be monaxons and triactines for the most part, with some odd shapes rarely interspersed.  Specimen is approximately 6 inches by 5 inches by 5 inches.  Leucon form,  I wonder if what i am seeing is also preserved spongin.  So many questions!  

 

IMG_1271 (2).JPG

Share this post


Link to post
Share on other sites
Deb in Michigan

image.png.879e19eccfba92fe74f3a36088d14aed.png

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

Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×