fifbrindacier Posted December 25, 2016 Share Posted December 25, 2016 For christmas, my husband bought me two ammonites. I'll show the second one in another thread. It is about 7 cm on 10 cm. The dealer told him this one was a placenticeras in aragonite from Madagascar, for me it more looks like a douvilleiceras, but i am not an expert so i need your help : "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...
abyssunder Posted December 25, 2016 Share Posted December 25, 2016 I agree with you, looks like a polished Douvilleiceras mammilatum from Madagascar. Nice specimen! " 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...
fifbrindacier Posted December 25, 2016 Author Share Posted December 25, 2016 12 minutes ago, abyssunder said: I agree with you, looks like a polished Douvilleiceras mammilatum from Madagascar. Nice specimen! That's what i thought, and i also think it has what i call the "loge" (cavita in italian, and maybe also in romanian ) the space where was the body of the animal. I love its colors and its suture patterns. "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...
Ludwigia Posted December 25, 2016 Share Posted December 25, 2016 Definitely Douvilleiceras. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
abyssunder Posted December 25, 2016 Share Posted December 25, 2016 I have a Douvilleiceras from Madagascar, and I think mine is D. mamillatum, but is not polished like yours, also looks a bit different. Maybe yours is not D. mamillatum, looks like it could be D. inaequinodum maybe. Here is an excerpt from Maurice COLLIGNON. 1963. ATLAS DES FOSSILES CARACTERISTIQUES DE MADAGASCAR (Ammonites ). Fascicule X ( A L B I E N ), which might help. pdf BTW, the Italian "cavita" in Romanian should be "cavitate", in English "cavity" , in French "cavité", in Spanish "cavidad", in Portuguese "cavidade", all from the Latin "cavitas", if I'm not wrong. 5 " 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...
fifbrindacier Posted December 25, 2016 Author Share Posted December 25, 2016 2 hours ago, Ludwigia said: Definitely Douvilleiceras. Thanks Ludwigia. "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...
fifbrindacier Posted December 25, 2016 Author Share Posted December 25, 2016 1 hour ago, abyssunder said: BTW, the Italian "cavita" in Romanian should be "cavitate", in English "cavity" , in French "cavité", in Spanish "cavidad", in Portuguese "cavidade", all from the Latin "cavitas", if I'm not wrong. Ah i see you're also an expert in foreign languages. I myself studied foreign languages for years, i went to the university to become a translator. I learned mostly english and spanish, but also italian, russian, german and chinese. The studies i had at the university not only concerned the languages, but also their related cultures, politics, history (emigration, immigration, war, invasion, colonization, the influence of the dominant countries in what concern science, culture and trading), their evolution in time, their phonetic specificities and the differences that exist in the different countries where a same language is spoken, like for example between the english spoken in England and in the USA, or the spanish of Spain and of South America. That's what i can tell you without doubt that in Québec, Bruxelles, Genève and Monaco it is "cavité". "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...
FossilDAWG Posted December 26, 2016 Share Posted December 26, 2016 I agree with the others that your nice ammonite is a Douvilleiceras. Placenticeras is so completely different that there is no chance of confusing the two. If your fossil dealer made this mistake it indicates he/she knows nothing about ammonites, at least. The section where the body of the animal lived is called the living chamber. It is not present in your specimen, as suture lines can be seen right up to where the specimen ends. What you have is the phragmocone, which is the part of the shell made up of the individual chambers, which are called camerae, that are separated by walls called septa. Don 3 Link to comment Share on other sites More sharing options...
Max-fossils Posted December 26, 2016 Share Posted December 26, 2016 I don't know what it is, because I'm usually the one asking, but it sure is a stunning specimen! Seems like your husband has a great taste for fossils! Best regards, Max Max Derème "I feel an echo of the lightning each time I find a fossil. [...] That is why I am a hunter: to feel that bolt of lightning every day." - Mary Anning >< Remarkable Creatures, Tracy Chevalier Instagram: @world_of_fossils Link to comment Share on other sites More sharing options...
herve Posted December 26, 2016 Share Posted December 26, 2016 Bonjour Fifi ,plusieur personne ton donnée des reponses,la photo est bien un douvillieceras de l albien de Madagasgar . bonne fetes Hervé J collecting only fossils since 30 years old,ammonites,heteromorphe ammonite,crabs,fish trilobit, sea urshins, mammals, etc...J am married . Sorry for my enghish Link to comment Share on other sites More sharing options...
fifbrindacier Posted December 26, 2016 Author Share Posted December 26, 2016 3 hours ago, herve said: Bonjour Fifi ,plusieur personne ton donnée des reponses,la photo est bien un douvillieceras de l albien de Madagasgar . bonne fetes Hervé Merci, bonne fête à toi aussi. "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...
fifbrindacier Posted December 26, 2016 Author Share Posted December 26, 2016 4 hours ago, FossilDAWG said: I agree with the others that your nice ammonite is a Douvilleiceras. Placenticeras is so completely different that there is no chance of confusing the two. If your fossil dealer made this mistake it indicates he/she knows nothing about ammonites, at least. The section where the body of the animal lived is called the living chamber. It is not present in your specimen, as suture lines can be seen right up to where the specimen ends. What you have is the phragmocone, which is the part of the shell made up of the individual chambers, which are called camerae, that are separated by walls called septa. Don 3 hours ago, Max-fossils said: I don't know what it is, because I'm usually the one asking, but it sure is a stunning specimen! Seems like your husband has a great taste for fossils! Best regards, Max In fact he knows that seller since about twenty years, so he knew he would find something interesting there. He went to the shop that is on the peninsula of Fouras, in front of Fort-Boyard, and came back with them, almost 700 km. Don, you're right, i am really not a specialist of cephalopods and i quickly saw that it couldn't be a placenticeras. The owners are a husband and his wife, he was the specialist of the fossils and he retired, so she is in charge now, but know less than her husband. "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...
FossilDAWG Posted December 26, 2016 Share Posted December 26, 2016 At least she has taste and stocks very nice specimens. Don 1 Link to comment Share on other sites More sharing options...
-Andy- Posted December 27, 2016 Share Posted December 27, 2016 As said above, it's a Douvilleiceras for sure. A very nice specimen too! Placenticeras are found in Asia, Europe and most commonly, America. Here are three different specimens. Here are three specimens. They do not have ribs like your specimen. If you could, inform your dealer friend of the correct species name. 2 Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
Ann S Posted December 28, 2016 Share Posted December 28, 2016 Colors are beautiful - what a lovely Christmas gift!! 1 Link to comment Share on other sites More sharing options...
fifbrindacier Posted January 7, 2017 Author Share Posted January 7, 2017 On 26 décembre 2016 at 9:56 PM, FossilDAWG said: At least she has taste and stocks very nice specimens. Don On 27 décembre 2016 at 6:20 AM, -Andy- said: As said above, it's a Douvilleiceras for sure. A very nice specimen too! Placenticeras are found in Asia, Europe and most commonly, America. Here are three different specimens. Here are three specimens. They do not have ribs like your specimen. If you could, inform your dealer friend of the correct species name. On 28 décembre 2016 at 2:34 AM, Ann S said: Colors are beautiful - what a lovely Christmas gift!! I love the awesome colors those ammonites can have. "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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