fifbrindacier Posted July 25, 2019 Share Posted July 25, 2019 Hi, several months ago i found a very tiny and rather flat urchin in a block which had two spines. I managed to disengage the urchin, but it is really too tiny for my camera. The spines are bigger and i wondered to what family of urchin they belong (maybe a cidarid ?) I also join the photos of the urchin that was with them (although i don't know if that would help). @Coco @caterpillar ? The smallest spine : The bigger : "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 July 25, 2019 Author Share Posted July 25, 2019 I precise i found it in an Aptian strate. "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 July 26, 2019 Share Posted July 26, 2019 Yes, Cidarid spine. But the echinid is hard to determine with these pics. A regular for sure. Try to put it in diluted vinegar http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
fifbrindacier Posted July 26, 2019 Author Share Posted July 26, 2019 48 minutes ago, caterpillar said: Yes, Cidarid spine. But the echinid is hard to determine with these pics. A regular for sure. Try to put it in diluted vinegar Thanks Dominique. We were five persons to find spine urchins like these and one person found a cm wide fragment. So there are other urchins in that site. I put it in diluted vinegar and will try to provide the best pics i can. "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 July 26, 2019 Share Posted July 26, 2019 Hi, Yes, I am waiting for new pics 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 July 26, 2019 Author Share Posted July 26, 2019 I've put the urchin out of diluted vinegar hours ago but I couldn't take pics with my camera. The zoom doesn't want to move and when I try to switch it off there is that message : Erreur objectif. Fermeture automatique. Redémarrer appareil photo (Error lens. Automatic closing. Restart camera.). Ggrr ! I don't know why, but it reminds me when the Tax Office sent me a registered letter with acknowledgment of receipt to threaten me with an attachment of earning and a bailiff seizure of my furnitures because I owed them the great debt of twenty cents. So, I took pics with my phone and hope they'll be god enough. I don't hope a species identification, I just have the feeling it is also a Cidarid and like your opinion on that. "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 July 26, 2019 Share Posted July 26, 2019 Hi, Oh Sophie ! You only have "the belt" () of the urchin ? The periprocte and the peristoma seem to have disappeared... (anus and mouth). I can’t help any more. The only important clue I can see is that this sea urchin are the pore pairs. Coco 1 ---------------------- 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 July 26, 2019 Author Share Posted July 26, 2019 2 hours ago, Coco said: Hi, Oh Sophie ! You only have "the belt" () of the urchin ? The periprocte and the peristoma seem to have disappeared... (anus and mouth). Oh, i hope it lost them after its death or so, it must haved had a very unpractical life. "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 July 26, 2019 Share Posted July 26, 2019 Coco 1 ---------------------- 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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