Jump to content

ID help on cephalopod from Kansas City Winterset


KCMOfossil

Recommended Posts

I found this in the Winterset Limestone of the Pennsylvanian system, Kansas City group near Raytown, MO.  The matrix was quite oolithic.  You may notice from the pictures that I had some trouble reassembling and gluing it after it fell apart, and it may be missing a bit of the small end.  It looks to me like an internal mold of an evolutely coiled cephalopod.  It is about 2 cm x 1.5 cm.  Any ID help will be appreciated.

 

59f1489a87c7b_CIMG7044front.thumb.jpg.b19281c318ff6751a371dea51c680541.jpg59f148b35a0dd_CIMG7046rule.thumb.jpg.a6452c9579ba22010c4f8752e3478733.jpg59f148c70d25e_CIMG7045back.thumb.jpg.91f3ef0755a3b393e770b4f8cf1edd62.jpg

  • I found this Informative 1
Link to post
Share on other sites

Thanks, Bullsnake, for the link.  Comparing the photos in the link, my specimen looks similar to Solenochilus.  

 

Russ

1 minute ago, KCMOfossil said:

Solenochilus

Oops, I mean Domatoceras.

Link to post
Share on other sites

Nice specimen.

 

It probably is Metaoceras. It is the most common type in the Winterset, and its first whorl is loosely coiled.

  • I found this Informative 3
Link to post
Share on other sites

Thanks, Missourian.  I have been fascinated by the materials I have found near Gregory and I-435.  The oolithic matrix makes for some interesting preservations.  Do you agree that this is an internal mold?  By the way, I think you skipped a keystroke; you meant to type Metacoceras.  Thanks for the ID help.

 

Russ

  • I found this Informative 1
Link to post
Share on other sites
2 hours ago, KCMOfossil said:

Thanks, Missourian.  I have been fascinated by the materials I have found near Gregory and I-435.  The oolithic matrix makes for some interesting preservations.  Do you agree that this is an internal mold?  By the way, I think you skipped a keystroke; you meant to type Metacoceras.  Thanks for the ID help.

 

Yes, Metacoceras mispeled. :)

 

And yes, the cephalopods are often preserved as internal molds.

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.

×
×
  • Create New...