Coco Posted January 19, 2017 Share Posted January 19, 2017 Here is a tooth my colleague found a lot of years near Cognac (Charente, France). It is from a sedimentary facies Purbeckian (Late Jurassic, Lower Cretaceous). The quarry was in the marl, we found many reptiles, teeth and fish scales there, and of very small shark teeth. The size is 4 cm (1" 3/5) Thanks for your help. 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...
Ramon Posted January 19, 2017 Share Posted January 19, 2017 Wow!!! It is a theropod tooth. Resembles a tyrannosaurid tooth. Not sure!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
jpc Posted January 19, 2017 Share Posted January 19, 2017 The photos are quite good and I don't see any serrations. Could this be a large marine reptile? By the way... 'career' is supposed to 'quarry'. 'Carriere' en francais a deux sens... 1) le boulot qu'on a (t'a carrierre est clown,) et 2) un trou pour ramasser des cailloux. 'Career' en anghlais c'est le boulot. 2 Link to comment Share on other sites More sharing options...
Coco Posted January 19, 2017 Author Share Posted January 19, 2017 Hi JP, You are right It was in a quarry ! I have just looked at it with a binocular microscope and there is no track of dentation, just a hull (keel ?) on a single side. It isn't maybe a reason to exclude a carnivore ? 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...
Vieira Posted January 19, 2017 Share Posted January 19, 2017 I don't see a serration neither. I think if it not have a serration, the best shot it's a marine reptile tooth indeed... Link to comment Share on other sites More sharing options...
Troodon Posted January 19, 2017 Share Posted January 19, 2017 Definitely not dinosaurian. Let me offer two possibilities. A crocodyliform from the Purbeckian facies called Goniopholis but I'm not sure if they became that large Another possibility since the Quarry appears to be marine is the Metriorhynchidae called Dakosaurus. It's found in the late jurassic early cretaceous deposits and the size fits. 4 Link to comment Share on other sites More sharing options...
oilshale Posted January 19, 2017 Share Posted January 19, 2017 This Dakosaurus from the upper Jurassic of Painten (Painten Formation, almost same age as Solnhofen) is on display in the foyer of "Kalkwerke Rygol", owner of the quarry and producer of drymix mortars. The largest Dakosaurus tooth from there is 11cm !!! PS: Not me! Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
Ridgehiker Posted January 19, 2017 Share Posted January 19, 2017 13 hours ago, Coco said: Hi JP, You are right It was in a quarry ! I have just looked at it with a binocular microscope and there is no track of dentation, just a hull (keel ?) on a single side. It isn't maybe a reason to exclude a carnivore ? Coco Neat specimen. Always good to see something different. I have found unworn T rex teeth without a hint of serrations. However, they dont have such a pronounced axial line. Usually more subtle. This doesnt rule out dino but not likely. It has a terrestrial coc look but I'm unfamiliar with marine teeth. Link to comment Share on other sites More sharing options...
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