glu Posted February 10, 2016 Share Posted February 10, 2016 Ok that's a funny fact. I've found this Raja Clavata dermal denticle in a beach in Cadzand, famous for shark and ray teeth. Ray fossils are pretty common there but now I have a doubt. This piece is very light and It's not black coloured as the fossils that came from here. Is that modern or fossil? Link to comment Share on other sites More sharing options...
Coelacanth Posted February 11, 2016 Share Posted February 11, 2016 (edited) The interior looks friable and calcareous; it also has a fracture pattern incongruous with modern denticles, so I would say that this is a fossil. Edited February 11, 2016 by Coelacanth 1 Link to comment Share on other sites More sharing options...
glu Posted February 11, 2016 Author Share Posted February 11, 2016 That's good, thanks Coelacanth. The suspicious thing is that the bone is porous like a modern one. Link to comment Share on other sites More sharing options...
fossilized6s Posted February 11, 2016 Share Posted February 11, 2016 Put it in a glass of water and see if it floats. This is definitely not going to be a conclusive result, because of the density. But it may shed a little light on the problem. It's cool. ~Charlie~ "There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK ->Get your Mosasaur print ->How to spot a fake Trilobite ->How to identify a CONCRETION from a DINOSAUR EGG Link to comment Share on other sites More sharing options...
Coco Posted February 11, 2016 Share Posted February 11, 2016 Hi, I am OK with a recent Raja clavata denticle.The shape indicates that this denticule was situated on the lower face of the ray, either around the anus, either on the pectoral part. Coco 1 ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Pareidolia : here 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...
glu Posted February 11, 2016 Author Share Posted February 11, 2016 It doesn't float but It's very light Link to comment Share on other sites More sharing options...
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