Rockwood Posted November 21, 2018 Share Posted November 21, 2018 43 minutes ago, PFOOLEY said: Now this... ...is "a wonderfully preserved Mosasaur pterygoid tooth" from @CreekCrawler's post Mosasaur Pterygoid " Shed Tooth". It would tend to explain my facet. Link to comment Share on other sites More sharing options...
PFOOLEY Posted November 21, 2018 Share Posted November 21, 2018 2 minutes ago, Rockwood said: It would tend to explain my facet. I would say it could explain your facet ...I just don't think it does. "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
frankh8147 Posted November 21, 2018 Author Share Posted November 21, 2018 7 hours ago, Rockwood said: There appears to be a second ridge forming a facet on the tooth that shouldn't be there. Am I just seeing it wrong ? I see exactly what you mean and thank you for pointing it out. The tooth is faceted on both sides - here are some other pictures showing it. Link to comment Share on other sites More sharing options...
Rockwood Posted November 21, 2018 Share Posted November 21, 2018 I'm thinking that clinches it. Link to comment Share on other sites More sharing options...
Carl Posted November 21, 2018 Share Posted November 21, 2018 1 hour ago, frankh8147 said: Thanks for the replies! I'll try to get some better pictures but I'm having difficulty getting good ones.. @Carl This is actually a different tooth than the prior potential theropod you helped me out with (found in the same general area) but appearance is pretty similar. It was also pointed out by me to another New Jersey collector that another Mosasaur tooth I recently found (lacking serrations) looked similar in shape too.. @non-remanié Ah! Didn't realize it was a new tooth! 1 Link to comment Share on other sites More sharing options...
frankh8147 Posted November 21, 2018 Author Share Posted November 21, 2018 33 minutes ago, Carl said: Ah! Didn't realize it was a new tooth! Yep! Here it is (new tooth on left) compared to the other one (which was shown to many different Paleontologists but didn't reach a consensus). 2 Link to comment Share on other sites More sharing options...
Jaimin013 Posted November 21, 2018 Share Posted November 21, 2018 2 hours ago, PFOOLEY said: Now this... ...is "a wonderfully preserved Mosasaur pterygoid tooth" from @CreekCrawler's post Mosasaur Pterygoid " Shed Tooth". That tooth is amazing Link to comment Share on other sites More sharing options...
Masp Posted November 21, 2018 Share Posted November 21, 2018 @frankh8147 seems like a lot of back and forth in this thread, very tough call. Just out of curiosity, what are you leaning towards now to label it as? I hope you’re succesful in finalizing it. 1 Link to comment Share on other sites More sharing options...
Ramon Posted November 21, 2018 Share Posted November 21, 2018 3 hours ago, frankh8147 said: I see exactly what you mean and thank you for pointing it out. The tooth is faceted on both sides - here are some other pictures showing it. That is one weird tooth!! Im still leaning toward theropod. The shape is consistent with that of a theropod. "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...
Ramon Posted November 21, 2018 Share Posted November 21, 2018 All of the following fossils were found in New Jersey. https://www.cambridge.org/core/journals/journal-of-paleontology/article/distinctive-theropod-assemblage-of-the-ellisdale-site-of-new-jersey-and-its-implications-for-north-american-dinosaur-ecology-and-evolution-during-the-cretaceous/96A7436DCD5866236C472749729F88B6 Your tooth resembles #9 #14 shows that the serrations are unusually small for a theropod tooth. The top of the tooth is extremely similar This is a dromaeosaur tooth from Ellisdale, NJ It also resembles your tooth. 1 "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...
Rockwood Posted November 21, 2018 Share Posted November 21, 2018 If that's the enamel on a theropod tooth shouldn't there be at least stumps of serrations along here ? 2 Link to comment Share on other sites More sharing options...
Ramon Posted November 21, 2018 Share Posted November 21, 2018 2 minutes ago, Rockwood said: If that's the enamel on a theropod tooth shouldn't there be at least stumps of serrations along here ? The tooth is very water worn. It is quite possible that they simple aren’t present because of erosion. 1 "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...
Rockwood Posted November 21, 2018 Share Posted November 21, 2018 8 minutes ago, Ramon said: The tooth is very water worn. It is quite possible that they simple aren’t present because of erosion. Does the dentin take on the appearance of enamel at that point, or is the enamel thick enough to persist on some teeth ? Looking at the example I have it seems like nearly no enamel would survive without showing some trace of serration stumps ? 1 Link to comment Share on other sites More sharing options...
Ramon Posted November 21, 2018 Share Posted November 21, 2018 3 minutes ago, Rockwood said: Does the dentin take on the appearance of enamel at that point, or is the enamel thick enough to persist on some teeth ? Looking at the example I have it seems like nearly no enamel would survive without showing some trace of serration stumps ? We need better pictures, they aren’t bright enough. @frankh8147 We need better pictures. Try photographing them in sunlight. "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...
frankh8147 Posted November 21, 2018 Author Share Posted November 21, 2018 It does have some faint traces of enamel but they are very very small. I will try to get some better pictures. I hope this doesn't confuse anyone but here is another similar tooth in shape from the same stream. As I said, we never reached a complete consensus but here are the best pictures I got of that one (in case it helps because they are both from the same area). So again, these are of the old, but very similar one. The serrations on both specimens are very similar. 1 Link to comment Share on other sites More sharing options...
frankh8147 Posted November 21, 2018 Author Share Posted November 21, 2018 3 hours ago, Masp said: @frankh8147 seems like a lot of back and forth in this thread, very tough call. Just out of curiosity, what are you leaning towards now to label it as? I hope you’re succesful in finalizing it. I actually try to stay impartial on these ID threads and not interject my own opinions, as best as I can. The way I figure it, there are people a lot more knowledgeable than me so I keep my role to finding stuff and taking pictures. 1 Link to comment Share on other sites More sharing options...
Rockwood Posted November 21, 2018 Share Posted November 21, 2018 This one looks theropod to me. It also seems to help that side of the argument on the other one. I can imagine these serrations being worn away while there was some enamel remaining. 2 Link to comment Share on other sites More sharing options...
Ramon Posted November 21, 2018 Share Posted November 21, 2018 I’m almost 100% confident these teeth are both from theropods. There’s a lot of examples of theropod teeth that were found in New Jersey, and look like yours. They are very curved, and may belong to a species of theropod that haven’t been described yet. The Appalachian dinosaur fauna seems to have been diverse, unfortunately there isn’t a lot of complete articulated material from this area of the U.S. 2 "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...
frankh8147 Posted November 22, 2018 Author Share Posted November 22, 2018 Thank you for all of the replies and comparisons - it's greatly appreciated! Link to comment Share on other sites More sharing options...
TyBoy Posted November 22, 2018 Share Posted November 22, 2018 Looks like a Moasaur tooth. Theropod teeth are compressed like the one in fossilguys photo. Yours is elliptical and cross section Link to comment Share on other sites More sharing options...
Rockwood Posted November 22, 2018 Share Posted November 22, 2018 33 minutes ago, TyBoy said: Looks like a Moasaur tooth. Theropod teeth are compressed like the one in fossilguys photo. Yours is elliptical and cross section I believe the site is late Cretaceous. Wouldn't this be about right for a cross section near the root on a T rex tooth ? Perhaps a lateral ? 1 Link to comment Share on other sites More sharing options...
ynot Posted November 22, 2018 Share Posted November 22, 2018 Really wish @Troodon was active, We need His expertise. 2 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
TyBoy Posted November 22, 2018 Share Posted November 22, 2018 The body is just too oval to be theropod which are compressed Link to comment Share on other sites More sharing options...
Rockwood Posted November 22, 2018 Share Posted November 22, 2018 6 minutes ago, ynot said: Really wish @Troodon was active, We need His expertise. I was just wondering if he would be amused with our gropings. 1 Link to comment Share on other sites More sharing options...
Rockwood Posted November 22, 2018 Share Posted November 22, 2018 11 minutes ago, TyBoy said: The body is just too oval to be theropod which are compressed Notice the way the sectional shape shifts rapidly toward the tip from what appears to be the beginning of the root in this photo. To me it seems like the sort of thing one would expect in a lateral 'rex tooth. 2 Link to comment Share on other sites More sharing options...
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