fifbrindacier Posted April 2, 2020 Share Posted April 2, 2020 Hi everybody, i'd like to lighted by your opinions on those Bartonian fossils from Blaye on the estuary of the Gironde. Firstly, those urchins. Blaye is a place where exist endemic urchins. I made a little research on myself and found some names. Echinolampas burdigalensis ? (maybe sismondia for the upper one ?) 1) 2) 3) Echinolampas stellifera ? Those gastropods : Olividea ? Olivancillaria ? Terebellum ? Bivalves : 1) 2) 3) 4) 5) Tellinidae ? Arcopagia for the one in the middle ? 6) 4 "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...
caterpillar Posted April 3, 2020 Share Posted April 3, 2020 To big for Sismondia. All are Echinolampas. For the species, you can clean them a lot. E.stellifera is very high. Not like here http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
fifbrindacier Posted April 3, 2020 Author Share Posted April 3, 2020 Thank you Dominique, it's hard to clean them with the tools i have without risking scratching them. But i think i can do more. Do you think a bit of diluted vinegar can be useful for those urchins also ? "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...
caterpillar Posted April 3, 2020 Share Posted April 3, 2020 Yes, vinegar can help you. But you must reduce gangue as much as possible 1 http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
jpc Posted April 3, 2020 Share Posted April 3, 2020 Before anyone else asks....fortunatley, both of these folks are French so they understand that 'gangue' is French for 'matrix'. 2 Link to comment Share on other sites More sharing options...
fifbrindacier Posted April 3, 2020 Author Share Posted April 3, 2020 1 hour ago, jpc said: Before anyone else asks....fortunatley, both of these folks are French so they understand that 'gangue' is French for 'matrix'. Yes, you're right, matrix can be translated by matrice which has a sense somehow maternal : of reproduction and/or creation. For example in the sentence : "Moulds are used to copy imprints of fossils" would be translated by : "C'est avec une matrice que l'on reproduit une empreinte de fossile". The world "gangue" means, concerning stones, you're speaking about something without value that wrap something of value. "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...
grandpa Posted April 3, 2020 Share Posted April 3, 2020 In English (Texan a la grandpa) we say the "matrix" the fossil is in and the "gangue" material (a.k.a. "ore dressing") the mineral is found in. [Wikipedia: gangue ( / ɡ æ ŋ / ) [1] is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit .] [Fossil Wiki: Matrix is the sedimentary rock that has formed around the fossilized remains of an organism ] 2 Link to comment Share on other sites More sharing options...
jpc Posted April 3, 2020 Share Posted April 3, 2020 2 minutes ago, grandpa said: In English (Texan a la grandpa) we say the "matrix" the fossil is in and the "gangue" material (a.k.a. "ore dressing") the mineral is found in. [Wikipedia: gangue ( / ɡ æ ŋ / ) [1] is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit .] [Fossil Wiki: Matrix is the sedimentary rock that has formed around the fossilized remains of an organism ] well, I had no idea that gangue is also an English word See, you can learn stuff every day here. Thanks, grandpa and fifi. 2 Link to comment Share on other sites More sharing options...
fifbrindacier Posted April 3, 2020 Author Share Posted April 3, 2020 17 minutes ago, grandpa said: In English (Texan a la grandpa) we say the "matrix" the fossil is in and the "gangue" material (a.k.a. "ore dressing") the mineral is found in. [Wikipedia: gangue ( / ɡ æ ŋ / ) [1] is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit .] [Fossil Wiki: Matrix is the sedimentary rock that has formed around the fossilized remains of an organism ] 14 minutes ago, jpc said: well, I had no idea that gangue is also an English word See, you can learn stuff every day here. Thanks, grandpa and fifi. I also didn't know it was the same word in english, thanks grandpa. 1 "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 April 5, 2020 Author Share Posted April 5, 2020 I've cleaned the urchins a bit more with vinegar and here they are : 1) burdigalensis ? 1) bis 2) If someone knows how to get rid off that black color i'll be glad. I'd say burdigalensis for this one 3) I thought this one would be in a better state, ovalis ? And i add those ones : 4) burdigalensis ? 5) burdigalensis ? 6) ovalis ? 1 "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...
Coco Posted April 6, 2020 Share Posted April 6, 2020 To remove the black color, maybe some bleach. Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
fifbrindacier Posted April 6, 2020 Author Share Posted April 6, 2020 2 hours ago, Coco said: To remove the black color, maybe some bleach. Coco I tried it, but the result is not good for now. Maybe should i try again. If you see the previous photo of that urchin, the matrix on it wasn't black at all, it became black with the vinegar, what do you think caused this reaction ? "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...
Coco Posted April 6, 2020 Share Posted April 6, 2020 Hmmmm, no idea, sorry. Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
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