Ryker Posted October 28, 2009 Share Posted October 28, 2009 I've searched several websites and books, but I can't figure out what this is. Any ideas? It's hard to see from the photos, but the bottom edge that is still mostly encased in the rock appears to be a shell. ??? Link to comment Share on other sites More sharing options...
fig rocks Posted October 28, 2009 Share Posted October 28, 2009 Welcome to the forum, I am sure you will get your answer, there are a lot of experts here, to me it looks like a shell of some type, perhaps you may want to add location and formation where it was found. Oh, and very nice! Link to comment Share on other sites More sharing options...
Terry Dactyll Posted October 28, 2009 Share Posted October 28, 2009 There seems to be some symmetry to the markings, like they could be chamber walls or sutures of an ammonite.... it could be a section of an ammonite.... where the shell has worn away revealing the internal structure.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Ryker Posted October 28, 2009 Author Share Posted October 28, 2009 This was found in Arkansas in the Ozark Mountains near Jasper. Boone Formation, Mississipian Era. Link to comment Share on other sites More sharing options...
tracer Posted October 28, 2009 Share Posted October 28, 2009 not ammonite, i don't think. it's nautiloid. it's a cast of the thing. Link to comment Share on other sites More sharing options...
Northern Sharks Posted October 28, 2009 Share Posted October 28, 2009 Looks like Goniatite suture pattern to me There's no limit to what you can accomplish when you're supposed to be doing something else Link to comment Share on other sites More sharing options...
MOROPUS Posted October 28, 2009 Share Posted October 28, 2009 Looks like Goniatite suture pattern to me I totally agree with you! Goniatite family of Nautiloids will match! I found some of them in my trips... Link to comment Share on other sites More sharing options...
Ryker Posted October 28, 2009 Author Share Posted October 28, 2009 Looks like Goniatite suture pattern to me Thanks for the info, taking that in to account, I think you are right. Since it is broken and incomplete, I wasn't recognizing it for what it was. Thanks again. Link to comment Share on other sites More sharing options...
Carl Posted October 29, 2009 Share Posted October 29, 2009 It is a goniatite, but goniatites are ammonoids (which is broken down into goniatites, ceratites, and ammonites) rather than nautiloids. Link to comment Share on other sites More sharing options...
MOROPUS Posted October 29, 2009 Share Posted October 29, 2009 It is a goniatite, but goniatites are ammonoids (which is broken down into goniatites, ceratites, and ammonites) rather than nautiloids. Yes,Thank you! I was confused with the term Goniatites suture. They were the grandfathers of ammonoids! Link to comment Share on other sites More sharing options...
Terry Dactyll Posted October 30, 2009 Share Posted October 30, 2009 Nautiloid sutures have less complexity to them compared to ammonites... Usually just arc'd slightly ...looking at the chamber walls on the goniatite specimen is well on its way to becomming an ammonite.... Nautiloid Suture markings Ammonite Suture markings Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Ron E. Posted October 30, 2009 Share Posted October 30, 2009 This was found in Arkansas in the Ozark Mountains near Jasper. Boone Formation, Mississipian Era. You're pretty close to me! Link to comment Share on other sites More sharing options...
tracer Posted October 30, 2009 Share Posted October 30, 2009 Nautiloid sutures have less complexity to them compared to ammonites... Usually just arc'd slightly ...looking at the chamber walls on the goniatite specimen is well on its way to becomming an ammonite.... Nautiloid Suture markings Ammonite Suture markings simply amazing specimens. can't even figure out what adjectives to throw out about them. Link to comment Share on other sites More sharing options...
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