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Found 1,379 results

  1. Hello, I was doing a study on the T. rex and Nanotyrannus teeth specimens I had, and I wanted to compare them against a list of known T. rex teeth with measurement. The paper: Dental Morphology and Variation in Theropod Dinosaurs: Implications for the Taxonomic Identification of Isolated Teeth (JOSHUA B. SMITH, DAVID R. VANN, AND PETER DODSON) contains a list of 115 T. rex teeth. To make it easier to compare and read the data, I combined the measurements into a single chart, added colors and lines for ease of reading, and added the size and names of the T. rex used in the study Feel free to refer to the below chart for T. rex teeth measurements. I had to split the chart into 2 due to size limitations, but if you want the full-sized PDF version (25 MB), please message me so I can send it to you by email. If you have any suggestions to improve readability, or have your own data to add, go ahead and post it here! I will be posting pics and measurements of my various T. rex and Nanotyrannus teeth here @Troodon
  2. Heres a fun thread for those to show off their widest and fattest looking megalodon teeth fossils in thier collections. I'll set the tone with the widest fat boy in my collection, I don't have digital calipers but it measure roughly 5.4 inches wide by 6.1 inches long. When I close my hand together it looks even more monstrous. Share yours and join the wide boyclub Got the idea while thinking about what the widest megalodon tooth ever found measures, if anyone does know do share in this thread!
  3. Dinosaur teeth from Liaoning, China?

    The teeth below are said to be dinosaur teeth from Liaoning, China. Are they dinosaur teeth or teeth of marine reptiles?
  4. Herbivore teeth ID.

    Found these teeth with a bunch of other items on a lake beach today. Anybody know what they could be? I have some modern sheep, horse and cow teeth. None of them compare, I do not have full sets of teeth to compare either. These ones are much harder and wiegh much more than the ones I have. Any ideas?
  5. Mosasaur teeth?

    Hello all i believe these are both mosasaur teeth but wanted confirmation by folks with much more knowledge. The bigger of the two is 7/8 inches long thank you for your help
  6. Nanotyrannus?

    I'd quite like to add a new theropod tooth to my collection. I saw these three for sale, just wondering if they are Nano/theropod as described and not, say, raptor teeth. Thanks Pictures 1 - 3 is 0.56 inch. This has a more oval base, does this mean it's not nano? Because aren't there teeth more rectangular with an indented middle? Pictures 4 and 5 is 0.47 inch -- No pictures of base for this one. Pictures 6 and 7 is 1.06 inch long, but has a repaired tip and is in matrix. Any help will be great. If they check out, I will select one of these. If not, I'll have a browse for some others.
  7. 3 teeth from Florida

    Hello, These three teeth were found at a land site in Manatee County, Florida. They are a bit beat up, especially the third one, but hoping an ID is still possible. Thank you very much for looking. Cheers, Marie
  8. I know these are often composited, but if anyone can have a look, see how these are, that wpuld be great. I intend to get 1 globidens and one Mosasaurus Anceps. Ancepz I will put on post 2 1 - 15cm long from Benguerir 2 - 12 cm long --the different shading at the root, is that a sign the teeth are added? 3 - 10.5 cm
  9. Two Carboniferous teeth

    Yesterday I received a parcel from a member of the forum, containing fish and plant fossils from the Scottish coal measures, as well as a tooth which I found in West Yorkshire (UK) and sent to be prepared. My favourite of the Scottish fossils is a tooth which I am fairly confident is Strepsodus sp. Since little is known about Rhizodont teeth, it’s often very difficult to put a genus name to a particular species. Despite this, when I first saw this tooth the shape immediately made me suspect it is Strepsodus, so I decided to have a closer look at the striations. I was pleased to see that the striations look a very good match to Strepsodus sp in my opinion. I am therefore about 90% sure it is Strepsodus, and it’s the only tooth in my collection that I would call Strepsodus with any confidence. Sorry for the low quality photo, it’s quite small (5mm) and the shiny surface made it difficult to show the detail. Here is the tooth from West Yorkshire, before and after prep. It measures 12mm long, and is the largest tooth I have found in the Yorkshire coal field. It also the best preserved coal measures tooth I have found. This tooth comes from a mussel band, in which fish remains are quite rare, apart from in very thin fish layers which sometimes occur in the band. However, this is not within one of the fish layers. I’m not sure what fish this tooth is from, I suspect an identification would be almost impossible until more information about these fish is discovered and published. It is from the Pennine Lower Coal Measures formation (upper Carboniferous).
  10. Unidentified Teeth!

    I need help identifying these teeth! If anyone could help that would be great! We are in broadwater county in Montana if that can help at all in identifying them.
  11. Greens Mill Run

    Hi all, I am taking the family on a road trip in July, and was hoping to make a fossil hunting stop along the way. I noticed a lot of posts about GMR, and read some info elsewhere online. Are there any areas from the access points (Elm St. or Spring Green parks) that are elementary-school-age child friendly (ie: shallow water, banks/bars that can be easily accessed). Most info I found says to expect hip-wader depth and swift water. Any info from locals would be greatly appreciated. Thanks!
  12. Hi everyone my girlfriend bought me a tooth off the internet and my brother was playing around with it and broke it was wondering if it was real or not so I knew to repair it or not with glue can show the outside if needed to thanks in advance for anyone that can help
  13. Strange fish teeth???

    Hi there! While looking for shark teeth, in southern Iberia, we found this strange fish teeth(?). Any ideas?
  14. Any idea what these are

    Found these in alluvial sediments on the Eastern Shore of Maryland. They are silica but very odd shapes, almost look like teeth. Anyone have any idea what these are? Are they fossils or just oddly formed silica?
  15. Mystery Cretaceous Tooth New Jersey NJ

    Hello everyone, found this mysterious tooth in a cretaceous stream in New Jersey. Haven't come across any similar or anything I can really compare it to, plus its kinda worn. Which doesn't help but the leaf-like shape alone is very interesting, hopefully this one can be figured out.
  16. Brazos River Bison/Horse Jaw

    Found these two teeth still attached to a segment of jawbone on the Brazos River just southwest of Houston today. They're definitely mineralized, so I believe I can rule out ordinary cows. However, after doing some research online the teeth seem to be much too flat to be bison, so maybe horse? They both look like molars, although one of the roots is broken off of the first tooth - I honestly have no idea how it managed to hang on for so long. Either way, I was incredibly excited to find this, especially after braving the 90 degree plus heat for several hours without sunscreen. Any help on an ID would be much appreciated. Thank you!
  17. Shark Tooth Collection

    9This is my shark tooth collection. Thought it would be cool to share here. My collection is a very small one, and is nothing compared to what some people have, but I am quite proud of it. (Image is in reply below)
  18. Need help ID multiple Items

    Hi guys! I’m new to this, but my wife and I have been shark tooth hunting for the past month thanks to “quarantine”. We have found some interesting things, but can’t seem to pin point what they are exactly. We believe some may be megalodon teeth, great white teeth, and a dugong bone. All were found at Onslow beach,NC. We appreciate your guys help!
  19. Big Brook, NJ Toe bone (Phalanx) ID

    Here are all my finds from big brook. WHAT A DAY ...arrowheads,toe bones, big shark teeth, misc I just need the toe bone ID
  20. Hi guys I recently purchased this Megalodon tooth and I'm pretty sure it's real but I wanna know what you guys think.
  21. I found some teeth and bone fragments digging footings in my backyard. Any idea what animal these might be from? Thanks!!
  22. Purse Beach Find

    Hi, friends! First time poster here. We found this interesting one at Purse Beach, Maryland. Any thoughts. Thanks! PurdyFamilyFossils ... and please forgive my lack of professional photography skills.
  23. I wanted to share a small collection of GW teeth I've acquired over a few years. For today I'll just post pics of those I have from 1 location. Tomorrow I'll post a few more. I don't have a lot of variety location wise, but I love these teeth and enjoy watching for deals that do occasionally pop up from time to time. First up are the teeth from Peru. Most are pretty worn, though some of the larger teeth have very nice serrations. The color of these teeth astounds me, from shades of pink, blue, gray, brown, orange, and yellow. I don't have much information about where they originated in Peru, but they would be Miocene/Pliocene in age.
  24. I was curious if there was a visual guide to tiny (between 1-5mm) shark teeth from Florida? I’m almost done going through a bag of micro matrix and have found at least 100 very small teeth that I would love to identify without bombarding the forum with more questions than I’ll already be asking on other items I’ve found. I can usually tell what they are when they’re larger, but these tiny teeth are somehow more difficult to me. The area that the matrix came from was described as a shallow bay that would have served as a nursery for sharks and other aquatic animals, so I’m guessing that they may be juvenile teeth? I would appreciate any help I can get here so I don’t have to constantly ask you all what shark a tooth may have come from, it’s really in the forum’s best interest here.
  25. Hi there, guys. So, I got these from an internet auction. It's the first time I put my hands on this kind of piece. It doesn't "feel" fake or nothing, but I just want to be sure, so I thought I'd better get an expert opinion. What do you think? It's supposed to be Merycoidodon culbertsoni, from the Oligocene of South Dakota Badlands.
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