dbrake40 Posted March 9, 2020 Share Posted March 9, 2020 Thoughts on age/epoch? Ancient or not? Found on a gravel bar on a river in Southern Minnesota. 2 Link to comment Share on other sites More sharing options...
Pterygotus Posted March 9, 2020 Share Posted March 9, 2020 Looks fossil to me but I could be wrong. You could try the ‘flame test’. 1 Link to comment Share on other sites More sharing options...
Spoons Posted March 10, 2020 Share Posted March 10, 2020 4 hours ago, Pterygotus said: Looks fossil to me but I could be wrong. You could try the ‘flame test’. I agree, if you have a bic lighter, you can try and hold the specimen above the flame for a few seconds, if it smells like burning hair, that means that there are still organic collagens present within and it’s not fossilized. As for what formation it is from... I have no idea. I would recommend looking around where you live/found this tooth on the USGS geological map database map viewer. It requires adobe flash player, so you’ll probably have to use a desktop to view it. Either way that’s a really awesome tooth! -Nick 1 Link to comment Share on other sites More sharing options...
Coco Posted March 10, 2020 Share Posted March 10, 2020 Flame test doesn't work on tooth... Coco 3 ---------------------- 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...
Spoons Posted March 10, 2020 Share Posted March 10, 2020 1 hour ago, Coco said: Flame test doesn't work on tooth... Coco Thank you for the correction. Link to comment Share on other sites More sharing options...
Coco Posted March 10, 2020 Share Posted March 10, 2020 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...
dbrake40 Posted March 10, 2020 Author Share Posted March 10, 2020 The geology in my area is upper Cretaceous. However, the river where this specimen was found pulse floods and is like a giant gravel mixer. In the past and recently Pleistocene fossils have been found on the gravel bars in my area (mammoth, bison, etc). So it is very difficult to age by geology/context. Link to comment Share on other sites More sharing options...
dbrake40 Posted September 13, 2020 Author Share Posted September 13, 2020 Here's a couple additional photos with size gauged and close up of chewing surface. Link to comment Share on other sites More sharing options...
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