fifbrindacier Posted July 17, 2017 Share Posted July 17, 2017 While visiting the caves of Cerdon in the departement of Ain, i bought that ammonite. It hadn't name but i was said that most of the ammonites sold there were from the asteroceras family. I don't know more about it except that if it is an asteroceras it has chances to be from the Sinemurian (-200 to -191 MY). It is about 11 cm of diameter "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
TqB Posted July 17, 2017 Share Posted July 17, 2017 I don't know what it is but it's not Asteroceras, that always has a strong keel with grooves either side. It reminds me of Douveilliceras (Cretaceous) but I'm usually wrong on ammonites. @Ludwigia will probably know. 1 Tarquin Link to comment Share on other sites More sharing options...
Arizona Chris Posted July 17, 2017 Share Posted July 17, 2017 The center appears carved to me. It is a nice specimen however! ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
caterpillar Posted July 17, 2017 Share Posted July 17, 2017 No, it's not a nice specimen. It's a big sh.... carved from Morocco. I don't understand how you can buy a fossil like this http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
Ludwigia Posted July 17, 2017 Share Posted July 17, 2017 Tarquin is correct. It's a Douvilleiceras. 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
TqB Posted July 17, 2017 Share Posted July 17, 2017 30 minutes ago, Ludwigia said: Tarquin is correct. It's a Douvilleiceras. Thanks, Roger, there's a surprise. Tarquin Link to comment Share on other sites More sharing options...
glu Posted July 17, 2017 Share Posted July 17, 2017 Douvilleiceras?It looks like a totally carved Mantelliceras from Morocco 1 Link to comment Share on other sites More sharing options...
abyssunder Posted July 17, 2017 Share Posted July 17, 2017 I agree! It looks like a carved Mantelliceras ammonite. The genus was present also in the Cretaceous sediments of France. " 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...
Ludwigia Posted July 17, 2017 Share Posted July 17, 2017 Sorry, but I'm not quite convinced. The ribs on Mantelliceras bifurcate, whereas by Douvilleiceras they generally don't. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
caterpillar Posted July 18, 2017 Share Posted July 18, 2017 Hey guys! You don't see that it's a carved ammonite from Morocco? Not a Mantelliceras of course but a Cheloniceras. Only the chamber is real http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
fifbrindacier Posted July 19, 2017 Author Share Posted July 19, 2017 I'm still new in the domain of fossils and i thought that i could be confident in an organization such as this one http://www.grotte-cerdon.com, partially financed by public money. This is an area where you can find lots of species of ammonites and they promote local products, so i logically believed they sold ammonites found locally. Instead, i know now they buy them to a society with the minerals they sell. "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
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