Killclaw Posted January 29, 2016 Share Posted January 29, 2016 Any Rexperts out there please........ When fishing for Tyrannosaurus teeth on the market what I notice a lot, more than in other theropod teeth, is the different classifications they seem to be sold as. You've got your Maxilla teeth, premax, dentary teeth, point teeth, back teeth etc. I can guess at the out the locations in the jaw easily enough but what should I be looking for in terms of the different structure and size for these and any other category of T-rex tooth out there? Are certain type teeth considered more desirable and valuable than others or does it all just come down to size? Link to comment Share on other sites More sharing options...
Troodon Posted January 29, 2016 Author Share Posted January 29, 2016 It's your own personal choice, what you like in shape and size. Typically pre-maxillary teeth are the least desired and the price is not has steep. Dentary teeth are big, fat and shout Rex are the most desired with the highest price. I like posterior teeth because of the shape. So its whatever pleases your tastes and wallet. Link to comment Share on other sites More sharing options...
Susan from PA Posted February 16, 2016 Share Posted February 16, 2016 Absolutely stunning collection! I'm in love with the Nanotyrannus maxilla. So beautiful! . Link to comment Share on other sites More sharing options...
Troodon Posted February 16, 2016 Author Share Posted February 16, 2016 (edited) My favorite also. In reading your intro see that you collect Hell Creek fossils. Lots of very cool material comes from that locality, good choice. This jaw was at the Tucson show. Teeth have been placed and a bit of resto to the bones around the maxilla, very interesting Edited February 17, 2016 by Troodon 1 Link to comment Share on other sites More sharing options...
Susan from PA Posted February 17, 2016 Share Posted February 17, 2016 My favorite also. In reading your intro see that you collect Hell Creek fossils. Lots of very cool material comes from that locality, good choice. This jaw was at the Tucson show. Teeth have been placed and a bit of resto to the bones around the maxilla, very interesting post-10935-0-52439600-1454276408.jpg Yes! Most of my fossils are from Hell Creek. I collect a little at a time, as some specimens can be rather pricey. I think we purchase some specimens from the same seller in Powder River County, MT. . That is a beautiful maxilla! As much as I would love to add something like that to my collection, it would be out of reach financially, I'm afraid. I was able to purchase a nice Tyrannosaurus rex vertebra from someone who lives here in PA that attended the Tucson show, but I have to finish paying for it first. (I'm halfway there). I'll post some pics of my collection as soon as I can take some decent photos. Where can I find "Osteology of Tyrannosaurus rex" by Christopher Brochu? I'd love to read it. . Link to comment Share on other sites More sharing options...
Troodon Posted February 17, 2016 Author Share Posted February 17, 2016 Oh, that person might it be Brian, if so I saw the vert. It's small fossil world. I've gone collecting at the ranch that sells the Hell Creek material on eBay and have bought a few from them. Any questions send me a PM. That publication is available from the SVP website it's Memoir Series No 7. You should be able to buy it on line but I've always wound up calling. It looks at the bones found of Sue, great illustrations Link to comment Share on other sites More sharing options...
piranha Posted February 17, 2016 Share Posted February 17, 2016 ...Where can I find "Osteology of Tyrannosaurus rex" by Christopher Brochu? I'd love to read it. . Please send me a PM with your email address and I'll be happy to send it for you. Link to comment Share on other sites More sharing options...
Troodon Posted February 22, 2016 Author Share Posted February 22, 2016 A few of new items that I have yet to post in this section. A very large hand claw from a Nanotyrannus A Nanotyrannus Tooth I believe this is a Nanotyrannus but cannot be certain. My smallest T- rex teeth a pair of infant teeth 2 Link to comment Share on other sites More sharing options...
Dracorex_hogwartsia Posted February 22, 2016 Share Posted February 22, 2016 It's your own personal choice, what you like in shape and size. Typically pre-maxillary teeth are the least desired and the price is not has steep. Dentary teeth are big, fat and shout Rex are the most desired with the highest price. I like posterior teeth because of the shape. So its whatever pleases your tastes and wallet. My favorite teeth have always been pre-maxillary teeth. Like you it's because of the shape. I know I'm in the minority though because like you said, pre-maxillary teeth don't command the same price as the other tooth positions. Link to comment Share on other sites More sharing options...
Dracorex_hogwartsia Posted February 22, 2016 Share Posted February 22, 2016 A few of new items that I have yet to post in this section. A very large hand claw from a Nanotyrannus NanoHand -D72AK.jpgNanoHand2 -D72AK.jpg A Nanotyrannus Tooth Nanotooth4.jpg I believe this is a Nanotyrannus but cannot be certain. TyrannoTooth1.jpg My smallest T- rex teeth a pair of infant teeth RextoothInfant.jpg Your 1" Nano tooth looks very robust from the picture. Are you sure this isn't a juvenile rex tooth? As I stated earlier my favorite teeth are pre-maxillary teeth and that's what your second Nano tooth appears to be. Very large denticles on that tooth. Link to comment Share on other sites More sharing options...
Troodon Posted February 22, 2016 Author Share Posted February 22, 2016 The base is very rectangular but I agree it's a bit plump. Matches the teeth I have in my maxilla. Serrations look deceptively large because they are very crisp with no wear. I'll take a closer look at serrations with a scope, super tooth either way. Recall what I said in my "how to ID post" there are tweener teeth that can go either way. Premax teeth are nice more interesting than the blade teeth. Link to comment Share on other sites More sharing options...
-Andy- Posted February 23, 2016 Share Posted February 23, 2016 At first glance, I thought that was a juvenile Rex tooth too Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
Troodon Posted February 23, 2016 Author Share Posted February 23, 2016 Thanks for your comments guys you make a good point. I took a better look this morning and have not gotten any closer to an different ID so must relabel it Tyrannosaurid indet. It has features of both, most apparent is that the side your looking at is plump but the other side is not as prevalent but the shape of the crown is more rex like. The cross section is rectangular and the serrations under a scope look more like Nano long and thin. What I found interesting is that the mesial serrations only go down about a centimeter which leads me to believe it's a posterior tooth possibly maxillary. Another mystery but it's a beautiful tooth. Link to comment Share on other sites More sharing options...
Troodon Posted March 29, 2017 Author Share Posted March 29, 2017 Had a bucket of matrix from one of my collecting sites and wow look at what I pull out my smallest tyrannosaurid tooth. I first thought it was a dromaeosaurid but under a high powered microscope you can easily see the chisel serrations typical of tyrannosaurid. My guess is probably a Nanotyrannus simply because its compressed but it could be a maxillary Rex and who knows what they look like in this size. Very nice micro tooth from a very cool dinosaur Premaxillary of a Tyrannosaurus rex found this past fall in South Dakota 7 1 Link to comment Share on other sites More sharing options...
ynot Posted March 29, 2017 Share Posted March 29, 2017 Nice finds! It is so nice of You to keep updating these "jurassic park" threads!!!! 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...
Ludwigia Posted March 29, 2017 Share Posted March 29, 2017 Very nice! Congrats on the mini! Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Susan from PA Posted March 29, 2017 Share Posted March 29, 2017 Awesome teeth, Troodon! I love that mini tooth! I wonder how many of those I missed while digging? Link to comment Share on other sites More sharing options...
Troodon Posted March 29, 2017 Author Share Posted March 29, 2017 2 hours ago, Susan from PA said: Awesome teeth, Troodon! I love that mini tooth! I wonder how many of those I missed while digging? That is a normal occurrence when collecting at a channel. There is no way to see tiny items and lots are discarded. Reminds me when I was digging in a bone bed in very clay type material. I threw a softball size clump behind me. One of my buddies just happened to be there, the clump split open and large beautiful Nanotyrannus tooth was there. All large clumps since then are checked. Thanks for everyone's comments and @ynot will do my best to keep them current. 1 Link to comment Share on other sites More sharing options...
-Andy- Posted March 30, 2017 Share Posted March 30, 2017 I've never seen such a large premax before! Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
Troodon Posted March 30, 2017 Author Share Posted March 30, 2017 12 minutes ago, -Andy- said: I've never seen such a large premax before! Did you see the ones in my first page they are much larger. 6" fully rooted and a giant almost 3" "crown Link to comment Share on other sites More sharing options...
-Andy- Posted March 30, 2017 Share Posted March 30, 2017 2 minutes ago, Troodon said: Did you the ones in my first page they are much larger Good gracious, just looked again. Lemme amend it to: I've never seen such a large collection of giant premax before Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
Troodon Posted December 18, 2017 Author Share Posted December 18, 2017 How small can T. rex teeth get will here are two of my smallest. These also very fat relative to size. A tooth I've had in my collection for a while and believe its cf. Richardeostesia gilmorei Serrations photos of above Mesial with serration density Distal with Serration Density Updated Photo of this Rex digit. 6 Link to comment Share on other sites More sharing options...
LordTrilobite Posted December 18, 2017 Share Posted December 18, 2017 Good stuff! Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
JohnBrewer Posted December 18, 2017 Share Posted December 18, 2017 John Map of UK fossil sites Link to comment Share on other sites More sharing options...
-Andy- Posted December 19, 2017 Share Posted December 19, 2017 Are those the smallest known T-Rex teeth? Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
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