Ramon Posted January 7, 2017 Share Posted January 7, 2017 I bought this ammonite in San luis potosi, Mexico. It comes from the geological formation of Taman. Which is late Tithonian- kimmeridgian in age. This ammonite looks weird!!! Can you'all help me identify the genus. "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
jpc Posted January 7, 2017 Share Posted January 7, 2017 The photo is way too dark for us to see much. And the second one is out of focus. 1 Link to comment Share on other sites More sharing options...
Ramon Posted January 7, 2017 Author Share Posted January 7, 2017 Okay, I'll post some new photos!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ramon Posted January 7, 2017 Author Share Posted January 7, 2017 Here they are!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ludwigia Posted January 7, 2017 Share Posted January 7, 2017 That sure is a strange looking one. Never seen anything like it before. The way the ribs go in opposite directions on the inner and outer whorls is confusing, even somewhat suspect. It almost looks like a smaller one has been fit into the larger one. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ramon Posted January 7, 2017 Author Share Posted January 7, 2017 I'm thinking Taramelliceras!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ludwigia Posted January 7, 2017 Share Posted January 7, 2017 I'm not so sure. It's certainly not a T. canaliculatum if that's what you're thinking. Wrong stratigraphy and a different sculpture and form. Please post photos of the venter and the aperture. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted January 7, 2017 Share Posted January 7, 2017 I think I might have found something. Check out Ochetoceras, particularly O.zio. I believe they ranged up into the Tithonian. 8 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
abyssunder Posted January 7, 2017 Share Posted January 7, 2017 (edited) One of the stragest, I agree. The ribs goes in the same orientation but with different curvature. I think Ramon is very close to the ID, also you Roger. Ochetoceras zio (Oppel), would be an excellent match. Seeing the resemblance I would say...Wow! Edited January 8, 2017 by abyssunder P.s. 6 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Ramon Posted January 8, 2017 Author Share Posted January 8, 2017 2 hours ago, Ludwigia said: I think I might have found something. Check out Ochetoceras, particularly O.zio. I believe they ranged up into the Tithonian. Yeah it really does look like it!!! And it lived in mexico too. "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ramon Posted January 8, 2017 Author Share Posted January 8, 2017 I checked fossilworks.org, ochetoceras cf. Neohispanicum is found in the Taman formation of san luis potosi, Mexico!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ludwigia Posted January 8, 2017 Share Posted January 8, 2017 Then you must have noticed that the stratigraphy is Kimmeridgian rather than Tithonian. That would fit better. Did you find a photo of the type specimen in the UNAM? 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ramon Posted January 8, 2017 Author Share Posted January 8, 2017 7 hours ago, Ludwigia said: Then you must have noticed that the stratigraphy is Kimmeridgian rather than Tithonian. That would fit better. Did you find a photo of the type specimen in the UNAM? Yeah, I was wrong about the age. I found this picture of an Ochetoceras from the Taman formation. "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ludwigia Posted January 8, 2017 Share Posted January 8, 2017 Looks like we've solved the mystery then. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ramon Posted January 8, 2017 Author Share Posted January 8, 2017 Yeah, finally!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
StormDancer Posted January 8, 2017 Share Posted January 8, 2017 That is unusual, never seen one like it.....Nice Link to comment Share on other sites More sharing options...
Ramon Posted January 8, 2017 Author Share Posted January 8, 2017 4 minutes ago, StormDancer said: That is unusual, never seen one like it.....Nice Thanks, StormDancer!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
abyssunder Posted January 10, 2017 Share Posted January 10, 2017 The above specimens are from Wierzbowski, A. 1976. Oxfordian ammonites of the Pinar del Rio province(western Cuba); their revision and stratigraphical significance: Acta Geologica Polonica, 26, 137-260. - pl. 8, fig. 4-5. - representing Cubaochetoceras burckhardti (O’Connell, 1920); 2386 El Hoyo de la Sierra; 2434 Sierra de Guane. More recent reference: Olóriz, Federico; Villaseñor, Ana B.; López-Palomino, Isabel. 2008. Middle Oxfordian ammonite biostratigraphy of the Lower Santiago Formation at Tamán, San Luis Potosí, Mexico — with notes on Mexico-Caribbean ochetoceratins. Revista Mexicana de Ciencias Geológicas, vol. 25, núm. 2, pp. 261-283. Hope this helps. Compared with the all above, your specimen is a really nice one. 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Ramon Posted January 10, 2017 Author Share Posted January 10, 2017 The species could be Ochetoceras Mexicanum. Although many species have been found from there. Photos of Ochetoceras Mexicanum 1 "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ramon Posted January 10, 2017 Author Share Posted January 10, 2017 Here's some photos of Ochetoceras Mexicanum and my fossil. 1 "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
abyssunder Posted January 10, 2017 Share Posted January 10, 2017 You have the specimen in your hand. You could see details that others can't see. Considering the latest revision , I think you could put a label to your nice ammonite, also, it has a good resamblance with your last comparative pictures. I couldn't say more than this, but the details you could find in all of the references might lead you to conclude properly, I think. Really nice one! Thanks for uncover it from the shade. 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Ramon Posted February 11, 2017 Author Share Posted February 11, 2017 Guys, now I'm really confused!!! So, I found this picture of an ammonite. It said it from the jurassic of Mexico. It looks just like mine. It is labeled as Anispiceras. I haven't been able to find anything else on the genus Anispiceras. Any help would be appreciated!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ramon Posted February 11, 2017 Author Share Posted February 11, 2017 And could this be a synonym of Ochetoceras zio??? "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Ludwigia Posted February 11, 2017 Share Posted February 11, 2017 3 hours ago, Ramon said: Guys, now I'm really confused!!! So, I found this picture of an ammonite. It said it from the jurassic of Mexico. It looks just like mine. It is labeled as Anispiceras. I haven't been able to find anything else on the genus Anispiceras. Any help would be appreciated!!! Never heard of that. I think you've got some "fake news" there. Nothing unusual in the internet. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ramon Posted February 11, 2017 Author Share Posted February 11, 2017 What a shame!!! This ammonite and mine look exactly alike!!! There probably the same taxa. I wish they would label it right!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
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