Search the Community
Showing results for tags 'tyrannosaurus rex'.
-
Idea for legislation to reform the trade in Fossils of Large Vertebrates in the United States
Joseph Fossil posted a topic in Questions & Answers
I've heard very recently about the upcoming sale of the Tyrannosaurus Rex Skull Maximus and I'm horrified another priceless dinosaur specimen is once again out of the hands of science and into the hands of the ultra rich. This Smithsonian article is a great summary of what's happening, though it incorrectly states the specimen's age at 76 Million years old (T-Rex lived between 68-66 Million Years ago). https://www.smithsonianmag.com/smart-news/a-t-rex-skull-named-maximus-could-fetch-15-to-20-million-at-auction-180981116/ Though the fossil trade occurs around the world, -
Greetings, is there anyone that could recommend a fossil expert located in Southern California that could come on site to certify a series of dinosaur fossils that have been uncovered. Specifically, petrified/opalized dinosaur fossils. Thanks in advance!
-
From the album: Hell Creek / Lance Formations
This kind of incisor-like ("incisorform") tooth was originally thought to have belonged to a large, Cretaceous mammal. Later discoveries revealed that these teeth were actually the front teeth ("premaxillary teeth") of Tyrannosaurs - and are now known as a hallmark of their clade, Tyrannosauroidea. Closely-spaced, parallel grooves on bones suggest that Tyrannosaurs used these teeth to scrape meat from bone. Given the size, this is from a very young animal. Should Nanotyrannus be valid, then this should be considered an indeterminate Tyrannosaurid. -
From the album: Hell Creek / Lance Formations
This kind of incisor-like ("incisorform") tooth was originally thought to have belonged to a large, Cretaceous mammal. Later discoveries revealed that these teeth were actually the front teeth ("premaxillary teeth") of Tyrannosaurs - and are now known as a hallmark of their clade, Tyrannosauroidea. Closely-spaced, parallel grooves on bones suggest that Tyrannosaurs used these teeth to scrape meat from bone. Given the size, this is from a juvenile animal (smaller than "Jane"). Should Nanotyrannus be valid, then this should be considered an indeterminate Tyrannosaurid.-
- 1
-
-
- nanotyrannus
- premaxillary tooth
- (and 15 more)
-
There's a new documentary about dinosaurs (Prehistoric Planet). In this documentary we see a lot of dinosaurs and their appearance is quite different from movies (JW series) one of the most interesting is the Tyrannosaurus rex. This is because The T.rex had lips instead of showing cusps of their maxilla teeth. Actually, I really like the new look. It looks more like an animal than a monster from movies, but i'm very curious why did T.rex have lips? what is their evidence? I'm more interested in the basis for their idea. Does anyone know which paper has mentioned or discu
- 2 replies
-
- 1
-
-
- tyrannosaurus rex
- tyrannosaurus
- (and 1 more)
-
Number of Tyrannosauridae genera in Western and Eastern North America during the Maastrichtian Cretaceous
Joseph Fossil posted a topic in General Fossil Discussion
Along with an interest in Pennsylvanian fish diversity, I've also had an interest (like many others studying Paleontology) in the diversity of Dinosaur genera during the Cretaceous era (particularly the Theropod diversity in North America during the Maastrichtian period 72.1-66 Million years ago). Compared to the preceding Campanian period (83.6-72.1 Million years ago), I've noticed there is a slightly less number of known Tyannosauridae genera in Western North America (at the time a separate continent known as Laramidia). I've come up with a list of confirmed known and possible Tyrannosaurida -
Hi, Dear guys. I had a question about T.rex teeth I'm very confused by this question and hope to get an answer. we knew a T.rex‘s dentary tooth that will have a pinch in one side with the tongue. how about a maxilla tooth that will also have a pinch on one side? I guess that answer is not. And about another question: There is a tooth available online. Is it a dentary/maxilla tooth? and why. Please. From Weston County, Wyoming, United States 7¼ inches (18.5 cm) in length. Thanks guys for the help. Have a nice day. from Chris
-
From the album: Hell Creek / Lance Formations
It's remarkable that the minute features of this tooth can be preserved with such clarity after 66 million years! -
From the album: Hell Creek / Lance Formations
The preservation of theropod teeth doesn't get much better than this. -
Hey all Here in Auckland, we have a special visitor to our museum - Peter the Tyrannosaurus rex. As you'd probably guess, this is not a common sight for New Zealand so I had to check it out! I visited the (very modest) permanent display upstairs too and took some pics for you all to see The pic quality isn't the best, I didn't take my DSLR with me so it was all taken using my aging phone. There isn't much more to say, I'll let the pics do the talking.....
- 21 replies
-
- 10
-
-
-
My first post on the forum was to see if anybody could show me an adult specimen of “Nanotyrannus.” I was more forceful in that approach because, from what I’ve seen on Twitter, “Nano” fans like to argue with paleontologists on the validity of the genus, even though these scientists have been studying dinosaurs for years and have degrees and Ph.Ds in different scientific fields. The evidence points them in a different conclusion compared to the public, and the fact that they are being so heavily resisted against with regards to this topic is baffling. I decided to play the “Nano” fans at their
-
Hi all, saw this listing for a tooth, it’s from Meade County, South Dakota and looks to me like either a Nanotyrannus or Tyrannosaurus rex tooth. Want your opinions, I personally am leaning towards Nanotyrannus due to the pinch however it seems to be pretty robust. Thanks in advance measures about 1 cm
-
From the album: Hell Creek / Lance Formations
As a theropod tooth aficionado, I thought it useful to compare two families present in the Hell Creek Formation. They become increasingly difficult to distinguish as they get smaller, but this graphic presents some features which may be used to differentiate them on two similarly-sized exceptional specimens. Keep in mind there is some variability due to position, ontogeny, etc., so it's beneficial to study more than one tooth for each family.-
- 1
-
-
- theropod tooth
- theropoda
- (and 13 more)
-
Houston Museum of Natural Science + T. rex Victoria - July 2021
ThePhysicist posted a topic in A Trip to the Museum
I was in the area, so I made a very brief stop by the HMNS. I'll state up-front that this will be extremely dino-centric. What I saw was really great, they have a chronologically-organized display of animals from stromatolites to humans (I only made it to the Cretaceous). The lighting is very dramatic, so seeing it in person is much better than the dark photos portray (I did edit a few of them to enhance visibility). Lots of dynamic posing which is nice compared to other museums. Also, most specimens aren't behind glass, and you can get really close. I believe most of the skeleton- 11 replies
-
- 5
-
-
-
- tyrannosaurus rex
- t rex
- (and 5 more)
-
From the album: Hell Creek / Lance Formations
Not the prettiest tooth, but I very much enjoy fossils like this that demonstrate behavior and tell a story. T. rex and other Tyrannosaurs were unusual among theropods in that they consumed the entire carcass of an animal - bones and all. Most theropod dinosaurs have ziphodont teeth, thin and knife-like, good for cutting muscle from bone. The thick and robust teeth of adult Tyrannosaurs, coupled with their incredible bite force, allowed them to shatter and pulverize bone - even those of the large, formidable herbivores they hunted. Despite the robustness of their teeth, Tyrannosaur -
From the album: Hell Creek / Lance Formations
Not the prettiest tooth, but I very much enjoy fossils like this that demonstrate behavior and tell a story. T. rex and other Tyrannosaurs were unusual among theropods in that they consumed the entire carcass of an animal - bones and all. Most theropod dinosaurs have ziphodont teeth, thin and knife-like, good for cutting muscle from bone. The thick and robust teeth of adult Tyrannosaurs, coupled with their incredible bite force, allowed them to shatter and pulverize bone - even those of the large, formidable herbivores they hunted. Despite the robustness of their teeth, Tyrannosaur -
Found in hell creek fm
-
Here's a (hopefully) interesting question on a topic well outside my wheelhouse. In the break room at the Florida Museum of Natural History sitting on top of the double refrigerators is a cast of a coelacanth, a painted resin cast of a Tyrannosaurus rex foot (the left one), and inexplicably a cleaning sponge that one of the artists at the museum has modeled into a cartoon character named Robert with quadrilateral trousers. I've been looking at these objects while nuking my lunch in the microwave oven next to the refrigerators for several months now. Just yesterday I finally notice
-
- 9
-
-
-
-
- t-rex
- tyrannosaurus rex
- (and 1 more)
-
Just curious, because seller listed as nano
-
I’m thinking about buying one of them, assuming their the same price which one is better? my general overview- tooth in matrix is smaller, only .75 inch. But higher quality. However It can’t be id, it can be either Nanotyrannus or trex the other tooth is significantly bigger but has more wear and is confirmed to be trex. There’s no picture of bottom but I asked for one and ofc if they send it and it’s not a trex tooth I’m not going to buy it.
-
Hi all Emmm, this is my first Tyrannosaurus tooth, yes, I had no experience at the time, but I still remember how excited I was when I got this tyrannosaurus tooth, even now. Yes, he was a broken tooth, and it was expensive.And now I want to know the tooth ID.I think it's nanotyrannus. All I know is it's from hell Creek, Montana, no county. Thanks
-
From the album: Hell Creek / Lance Formations
It's interesting to compare differently-sized teeth of similar positions. These might represent ontogeny or other dental variation (due to multiple species, etc.). -
From the album: Hell Creek / Lance Formations
It's interesting to compare differently-sized teeth of similar positions. These might represent ontogeny or other dental variation (due to multiple species, etc.).-
- 1
-
-
- tyrannosaur dental ontogeny
- young tyrannosaur
- (and 9 more)
-
From the album: Hell Creek / Lance Formations
For most collectors, it's more affordable to have a piece of a T. rex tooth if you just want it represented. This one is clearly T. rex: it's theropod with serrations (this one has the basalmost portion of the mesial carina), very thick, and clearly would've had a large circumference. Note also the large angle made by the curvature of the tooth at the carina (not Nanotyrannus which have narrow, blade-like teeth). -
From the album: Hell Creek / Lance Formations
Sold by the BHI as Nanotyrannus lancensis. However, given the uncertain status of Nanotyrannus' validity, I chose to label it as Tyrannosaurid for now. It is interesting to compare to my other small Tyrannosaur teeth of the same/similar position. The base is clearly more compressed than my baby rex tooth (which is also smaller).
