PetrolPete

Id Help Need For Pensylvanian Age Concretion Fossils From Oklahoma

12 posts in this topic

I found a number of concretions from the oolagah lime formation (Pennsylvanian age) and I've been popping them over the last month. I've managed to ID some of them (I think) but there are several othere I need help with.

Pyritized orbiculoidea (I think)

post-8113-0-66675700-1338607183_thumb.jpg

A soft bodied organism of some sort? (for scale it is slightly larger than a quarter, my scale pic was too large to load)

post-8113-0-47698100-1338607384_thumb.jpg

Another orbiculoidea? or another bivalve of somesort?

post-8113-0-07066400-1338607501_thumb.jpg

more pics to come

Share this post


Link to post
Share on other sites

Here are some more

No idea what this might be, there is another piece to it that I'm still trying to split

post-8113-0-22088800-1338607668_thumb.jpg

also have no idea what this one might be, if anything (a little larger than a quarter, scale/complete concretion pic was too large)

post-8113-0-74626800-1338607818_thumb.jpg

possibly a bivalve or soft-bodied organism?

post-8113-0-15968600-1338607903_thumb.jpg

more to come

Share this post


Link to post
Share on other sites

another soft bodied creature or bivalve?

post-8113-0-71464500-1338608003_thumb.jpg

no idea, a pyritized something

post-8113-0-00647600-1338608060_thumb.jpg

soft-bodied creature of some sort?

post-8113-0-40169300-1338608101_thumb.jpg

another Orbiculoidea?

post-8113-0-73463900-1338608144_thumb.jpg

Share this post


Link to post
Share on other sites

My old eyes are having a tough time seeing any details, because the photos are so dark. :(

Share this post


Link to post
Share on other sites

The orbi is neat! Keep in mind that concretions can form around even tiny fragments. I think the 'soft bodied animals' in this case are just the first part of the concretion to form. Also keep in mind that soft bodied preservation is extremely rare! This is what makes the Mazon / Braidwood / Essex site so special! Icollect ironstone nodules here in TN, but all I find are orbi's and other brachs.

Share this post


Link to post
Share on other sites

The ones with concentric circles look they're from shark verts.

Share this post


Link to post
Share on other sites

I think you are right when you say the top picture is a orbiculodea. Here is are some found in Alabama.

post-5318-0-52198600-1338657316_thumb.jpg

Share this post


Link to post
Share on other sites

My old eyes are having a tough time seeing any details, because the photos are so dark. :(

sorry, it is hard to get good pictures of these guys because they are pitch black themselves and too much light quickly drowns out the photo

Share this post


Link to post
Share on other sites

Just found this thread... trying to tease out some of the detail from your photos (maybe could be more successful if you did overexpose your photos at least a bit):

post-4372-0-54246100-1356498406_thumb.jpg post-4372-0-68759100-1356498397_thumb.jpg

I'd say at least one of them could be Orbiculoidea

Share this post


Link to post
Share on other sites

I think you are right when you say the top picture is a orbiculodea. Here is are some found in Alabama.

i agree ... The inarticulate brachiopod Orbiculoidea

4 from Missouri for comparison on this page - Click Here

Share this post


Link to post
Share on other sites

i agree ... The inarticulate brachiopod Orbiculoidea

4 from Missouri for comparison on this page - Click Here

Ditto, all I can see for sure are brachiopods.

Share this post


Link to post
Share on other sites

Try taking the photos with a darker background. The light background is likely fooling the light sensor into setting an incorrect exposure. Also, often it is possible to angle the light to bring out surface detail; direct light straight onto the subject makes everything look flat and washed out.

Don

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.