KCMOfossil Posted October 26, 2017 Share Posted October 26, 2017 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. Link to comment Share on other sites More sharing options...
Bullsnake Posted October 26, 2017 Share Posted October 26, 2017 This may help: http://www.thefossilforum.com/index.php?/topic/33279-some-pennsylvanian-nautiloids/ @Missourian Steve Link to comment Share on other sites More sharing options...
KCMOfossil Posted October 26, 2017 Author Share Posted October 26, 2017 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 comment Share on other sites More sharing options...
izak_ Posted October 26, 2017 Share Posted October 26, 2017 No idea on its ID, but very nice specimen! Link to comment Share on other sites More sharing options...
Missourian Posted October 26, 2017 Share Posted October 26, 2017 Nice specimen. It probably is Metaoceras. It is the most common type in the Winterset, and its first whorl is loosely coiled. Context is critical. Link to comment Share on other sites More sharing options...
KCMOfossil Posted October 26, 2017 Author Share Posted October 26, 2017 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 Link to comment Share on other sites More sharing options...
Missourian Posted October 26, 2017 Share Posted October 26, 2017 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. Context is critical. Link to comment Share on other sites More sharing options...
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