Tidgy's Dad Posted April 15, 2022 Share Posted April 15, 2022 Hello, friends! If anyone can help to id this little spiny spine from the Waldron Shale of Indiana, I would be very grateful indeed. Sorry about the first pic, it's just to give a scale. The object in question is less than a mm wide at the 'base' and about 2 mm in length. It seems to be a spine with tubercles and is solid, not hollow. The picture below shows it better. Tubercles, which seem to be hollow as some are broken off. You can see quite a bit if you magnify the image : Is it a bryozoan? Where the tubercles are snapped off actually being zooecia? Or a trilobit? Any alternative suggestions also would be welcome. Thank you. Life's Good! Adam. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Plantguy Posted April 16, 2022 Share Posted April 16, 2022 Hey Adam, Interesting find. Are the structures in your 1st photo 5-6 sided? I'm wondering if your structure might be a cirri or one of the other features on the base of crinoid calyx? I am just wondering if that is just matrix and or recrystallized critter frag and offered a clue or was that a photo editor and/or my brain trying to have fun with me again....so many questions at this late hour... I defer to the invert and other experts.... Have a great weekend. Regards, Chris 1 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 16, 2022 Author Share Posted April 16, 2022 (edited) 3 hours ago, Plantguy said: Hey Adam, Interesting find. Are the structures in your 1st photo 5-6 sided? I'm wondering if your structure might be a cirri or one of the other features on the base of crinoid calyx? I am just wondering if that is just matrix and or recrystallized critter frag and offered a clue or was that a photo editor and/or my brain trying to have fun with me again....so many questions at this late hour... I defer to the invert and other experts.... Have a great weekend. Regards, Chris Thank you so much for the reply, Chris! This post has had over a hundred views, but this is the first response. I think that many people are as flummoxed as I am, but thanks very much for looking everyone. I'm sorry, I should have said that the blurred object near the spine is the bryozoan Eridotrypa echinata which has polygonal walls on it's zooarium around each zooecium. Crinoid spine could be a possibility though I can't recall crinoid spines having their own tubercles, but I expect some do. Thanks again for the great idea. Edited April 16, 2022 by Tidgy's Dad Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 17, 2022 Author Share Posted April 17, 2022 Hmmm. Well then, if there's a chap out there who can at least say if it's a trilobit or not, it must surely be @piranha Scott, please? And as for someone who is very familiar with the Waldron Shale, how about @Ken K? Any ideas, sir? Thanks again to all who've taken a look. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Recommended Posts
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 accountSign in
Already have an account? Sign in here.
Sign In Now