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Hey guys. I purchased this very small serrated theropod tooth from Hell Creek, USA. It is serrated on both edges and complete so I was wondering if it would be possible to give an ID on this tooth. It is 0,6cm on the largest end and 0,5cm on the smallest. Serration count on the smallest end is around 29-31 per 0,5cm. The long end serrations are a little worn to tell for sure. Thanks for the help and input Kind regards.

Hello everyone, I'm new here! Are there anyone who can identify these teeth? The shop says they are dromaeosaurid, but I think these might be from Nanotyrannus. Their crown morph clearly not Acheroraptor. Many thanks in advance!

Hi All, I wondered if you could help with the ID of two small teeth I found in the Hell Creek formation in SE Montana (in a microsite). The first is what looks like a Thescelosaurus tooth, but I think looking at it again it might be Ankylosaurus magniventris (it's small at 0.25"). The second is a small Theropod tooth (0.55") is a strange looking tooth which I can't place. Any help would be greatly appreciated. I've taken some photos in hand and then a few under the microscope. Thanks in advance for any help.

Nice, cool big bone for sale from Hell Creek Formation Montana listed as rex, is it?

I was inspired to post this after reading all of the mixed opinions on previous thread on the “Fossils from Hell Creek, Carthage Institute” book. Which books currently (accurate and as of date) are the best for learning about Hell Creek Fossils? Best visuals, info, and overall great reference.

These are my T-Rex and Nanotyrannus teeth. I acquired most of them pretty recently. They are some of my most prized dinosaur fossils. I'll post my T-Rex/Nano bones soon as well. Pic 1 and 2= Nanotyrannus lancensis tooth, Hell Creek formation, South Dakota Pic 3,4,5= Nanotyrannus lancensis tooth, Hell Creek formation, Montana Pic 6,7,8= Tyrannosaurus rex tooth, Hell Creek formation, Montana Pic 9= Tyrannosaurus rex pieces and tips, Hell Creek formation, Montana Pic 10 and 11= Tyrannosaurus rex tooth, Hell Creek formation, Montana Pic 12= Nanatyrannus lancensis teeth, Hell Creek formation, Montana Pic 13= T-Rex and Nano fragments, Lance formation, Wyoming

Hey everyone. I purchased this fossil recently and wanted to get your opinions on it. It is from the Hell Creek formation of Montana. The seller says that is either a surangular or angular bone from a theropod jaw. After looking at pictures it does look very similar to the angular bone of a Nanotyrannus, looks about the right size too. What do you dinosaur experts think? Thanks! -Mike

Hello there paleontologists, fossil enthusiast, and everything in between. If you couldn't tell this is the first content I've ever made on the fossil forum so please excuse errors and, or inexperience I apologize in advance. Here is my collection of display fossils as well as modern bones keep in mind this is purely what I have on display I keep the vast majority of fossils I posses in storage with lots of support such as bubble rap and various other materials to ensure complete security of precious peeks into our planet's history. If you have any questions or comments feel free to ask as you please. These are all authentic fossils 2 have been directly seen by a professional (Ursus sp. & Unidentified Dinosaur Cretaceous Rib) The Dactylioceras sp. is very clearly a real specimen however there was no authority on it's authenticity the two Hadrosaur fragments are authentic as well one purchased with it's card of authenticity by D.J Parsons and the other was purchased from the very same hunter whom discovered the Cretaceous rib section. (Note: individual specimen content will be released in time)

Another tooth I acquired from the Hell Creek formation. This one comes from a less well known seller and he identified this as Trex. I don't see the robustness of this tooth and I don't think it is Trex. What could it be then? I have no idea.

I recently bought this tooth from a sort of reputable seller that largely only deals in Hell Creek materials. I've been told that she sometimes do however get her Identification of materials wrong. This tooth here is labelled by her as Nanotyrannus but I had @Andy look at this and he said that I should seek better advice from the experts as he doesn't think it is a Nanotyrannus seeing that the tooth is a little too thick for Nano and a little too thin for T-rex. Attached are a few photos and I've also attached a microscopic zoomed in on the serrations. Serration count is 3 per mm.

This is a Profile on the T.rex that I had written for English and would like to see what you all think and correct me on what is wrong about it! Tyrannosaurus Rex is one of the most famous of all non-avian dinosaurs to ever roam the earth, and is known by the name T-Rex. Well that is an incorrect wording as the correct way to write the animals name is T.rex. Very few people know this and is one of my life dreams to educate people about this. Tyrannosaurus means Tyrant Lizard king. The now outdated view of T.rex being a lizard with poor eye sight and lumbering, is incorrect. In all actuality Tyrannosaurus rex was a warm blooded feather coated bird that could run to 25 miles an hour and actually had the best eyesight the earth has ever witnessed with eye sight over 13 times more clear than a humans. The first clue of this is the fact Tyrannosaurus had front facing eyes, meaning it had perfect depth perception. We know this because of the recreation of the eyes based on the fossil skull, eye sockets, which indicated its eye was the size of a softball. T. rex’s binocular range was 55 degrees which is actually greater than that of a hawk, which is of course renowned for its remarkable vision. Mix this eyesight with a sense of smell better than a bloodhounds, and a complex bird brain, this would be a perfect predator. Tyrannosaurus needed all these advantages as its pray was far from defenseless. Its pray would have included Ankylosaurus, Triceratops and Hadrosaurus which all have hard armor or a thick tail to ram into the predator to hit it off its feet. Tyrannosaurus rex lived in North America about 70-66 million years ago in the Hell Creek formation that leads from Montana to Colorado and branch off into Utah and Canada. During the time of Tyrannosaurus, the Environment of Hell Creek was a flood plain, creeks, swamps and dry forests of conifer trees and ferns that dominated for millions of years. The Swamps were home to many creatures such as crocodiles, fish, lizards, small non-avian dinosaurs, amphibians, mammals and birds. Away from the swamps, you would find dry forests and plains, which had creatures such as Tyrannosaurus, Triceratops, Dakotaraptor, Pachycephalosaurus and an uncountable number of others, not including the thousands of plant and fungi species. Meanwhile giant pterosaurs roamed the sky, and giant marine lizards swam the oceans. All of this was the domain of the mighty Tyrannosaurus rex, an invasive species from Asia that came to America during the early cretaceous period through land bridges and shallow seas. They became the top predator, and knocked other predatory theropod dinosaurs off the throne of Top Predator. Tyrannosaurus, despite popular belief, was covered in soft downy feathers much like emus and ostrich. They only really had scales on the under side of the tail, while their legs and face would have skin like an ostrich leg. They also did not roar, and most likely cooed and/or quacked like a modern day bird. They cared for their young like a mother bird and would defend them from anything. The closest living relative of the Tyrannosaurus is now the Chicken, and it may surprise you to know Chickens can chase, catch and devour mice whole, much like the Tyrannosaurus assumingly. For the very last thing you need to know the T.rex comes from a group of animals called the Tyrannosaurids, this group includes the Dilong, Gorgosaurus, Albertosaurus and Tarbosaurus.

Hi, I bought this raptor toe bone a few weeks ago. The website said that it is from an unidentified theropod, likely Acheroraptor. Troodon informed me about how not much material has been found of Acheroraptor. And also he said that my bone looks more like a turtle bone than a theropod bone. I think that he's probably right. I just want to hear some more opinions about it. It is from the Hell Creek Formation. Let me know what you guys think!