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Hi, I bought this bone unprepared a few weeks ago and was wondering if anyone had any idea of what type of bone it is and what it came from?(it was identified as a T-Rex gastralia by the seller)

I read somewhere in a paper by Jack Horner, that G-Rex was said to be around 16 years old when it died using bone histology. In the same paper it said that it was shown by LAG intervals that G-Rex would've continued to grow for 2-3 more years had it not died. This means that the infamous G-Rex was a sub-adult. Jack Horner's Paper: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.515.6451&rep=rep1&type=pdf This got me curious on how big exactly was G-Rex? What was its height, length, and weight? I tried googling the answers for these but to not avail as people seldom mention G-Rex all that often and there are no skeletal models or mounted skeletons. Can someone tell me why this is? And what is the true size of G-Rex.

Hi I decided to make this since the new Tyrannosaur from Alberta’s Foremost Formation, Thanatotheristes deerootorum has just been named and described. Enjoy!! Tyrannosaur bearing Formations in Canada: Formations in Alberta but most of the Formations on my list are I Alberta anyway. Horseshoe Canyon Formation 74-68 million years ago, Alberta: Albertosaurus sarcophagus, possibly Daspletosaurus sp. but no compelling evidence so far. Oldman Formation 78.2-77 million years ago, Alberta: Daspletosaurus torosus, Gorgosaurus sp. Foremost Formation 80.5-78.2 million years ago, Alberta: Thanatotheristes deerootorum, possibly Gorgosaurus sp. Milk River Formation 84.5-83.4 million years ago, Alberta: Tyrannosaur. indet could be a species of Thanatotheristes, possibly Gorgosaurus sp. Scollard Formation 68-66 million years ago, Alberta: T. rex, possibly Nanotyrannus Formations in British Columbia: Wapiti Formation 76.8-70 million years ago, Alberta, British Columbia: Unknown Albertosaurinae either Gorgosaurus or Albertosaurus, possibly Daspletosaurus sp. Tumbler Ridge 135-74 million years ago, British Columbia: Tyrannosaur. indet Formations in Saskatchewan and Manitoba: Dinosaur Park Formation 77-75.5 million years ago, Alberta, Saskatchewan: Daspletosaurus sp., Gorgosaurus libratus Frenchmen Formation, 68-66 million years ago, Saskatchewan: T. rex, possibly Nanotyrannus Bearpaw Formation 75-72 million years ago, Alberta, Saskatchewan, Manitoba: Daspletosaurus sp. one specimen from Daspletosaurus sp. that drowned. For now these are all the Tyrannosaurs known from Canada. No Eastern Tyrannosaurs in Canada yet either but maybe someday. I will also update this and add as more information comes available.

Hello everyone! Since I live close to the Smithsonian Natural History Museum, D.C., I thought I would go through and give you all a tour of the new fossil hall specimens. Due to the size of the museum, I decided to only focus on the dinosaur fossils. If anyone would like, in the future I can go back to get some pictures of the mammalian and invertebrate fossils as well. Also, due to file size, this will take a little while to add everything in (additional comments) despite the fact I have substantially reduced/cropped all the images. Thanks, hope you enjoy! ....................................................................................................................................................................................................................................................................................... Here is a view of the main area: ....................................................................................................................................................................................................................................................................................... Giant flightless bird Diatryma gigantea Lived 55-53 MYA Willwood Formation, Big Horn Co., Wyoming ....................................................................................................................................................................................................................................................................................... Early roller Primobucco mcgrewi Lincoln Co., Wyoming ....................................................................................................................................................................................................................................................................................... ?Gruiformes indet. Lincoln Co., Wyoming ....................................................................................................................................................................................................................................................................................... Dromaeosaurid dinosaur Saurornitholestes langstoni 78-77 MYA Oldman Formation, Alberta, Canada ....................................................................................................................................................................................................................................................................................... Giant Sauropod Armor (osteoderm) Titanosauria indet. 90-84 MYA Ankazomihaboka Formation, Madagascar ....................................................................................................................................................................................................................................................................................... Pachycephalosaurian dinosaur Stegoceras validum 77-76 MYA Dinosaur Park Formation, Alberta, Canada

New Studies Of elastin, collagen, actin in T Rex soft tissues reported. They were even able to raise antibodies to the proteins! https://m.phys.org/news/2019-11-mechanisms-soft-tissue-protein-tyrannosaurus.html

Cool story bro... https://www.bbc.com/news/science-environment-49595680

I have two similar sized teeth that were both from Hell Creek. One is a large nano tooth (left) but the other may be T. rex? The one on the right certainly is fatter. Thoughts? Thanks

I am obtaining this tooth that was collected in 1980s and found originally in S Dakota and is 3 1/2 inches. The person only identified it as dinosaur tooth. Here are the pictures. It looks like Trex right? Thanks in advance.

Just looking for a little help identifying a hell creek vertebra. The individual I purchased it from said it was likely a Tyrannosaur cervical vertebra (probably rex rather than a nano vertebra due to its size). Based on its shape and the fact it's very light, I'm fairly confident their identification is correct. Any help would be much appreciated

After the Velociraptor skull, I finally finished another very long project: the baby T. rex skull designed by Inhuman Species, a 3D printed museum quality fossil replica of a 2-3 years old Tyrannosaurus rex. I really love this project and I made a video of the making from the 3D printing to the painting - I hope you like it. If you're wondering, I 3D printed the skull with the Alfawise U30 in PLA plastic; please watch the video and turn on subtitles to learn more about the tools and the making processes. If your're addicted or interested in 3D printing, you can't miss those topics:

I found this tooth for sale listed as Nannotyrannus Tyrannosaurus. I was looking at the tooth and it seemed to have a pretty thick and oval base, but the base also looked like it was a little pinched in like a lot of Nanotyrannus teeth. I thought these pictures would be the best to figure it out, but there are more as well. Thanks for any help in advance, I’ve been looking for a T. Rex tooth for a while, and I want to make sure if I buy one it’s the real deal.

New York Times story about T Rex https://www.nytimes.com/2019/03/04/science/tyrannosaurus-rex-dinosaurs.html

We were having a discussion on the validity of Nanotyrannus Here, and I have a question for all you theropod tooth collectors. Many say that Nanotyrannus lancensis is a adolescent Tyrannosaurus rex. Now some here have many teeth from both. Nanotyrannus has gracile, thinner teeth, whereas tyrannosaurus has robust, thick teeth. If N. Lancensis is a juvenile form, than we should expect to see a transition in teeth from slender to thick. In other words, a spectrum of teeth. Do any of you collectors have this represented in your collection? Or a transitional tooth? Please do post pictures. Now it is possible that there is one day a sudden change from one form to the other, but I’ve not seen anything to indicate that to be the case (if you do please share it). I will I’ll add I don’t have any of either teeth, and this is purely to satisfy my curiosity.

Hi All I am open to trading my following theropod teeth. I have attached a couple of images of each teeth along with info on the size and locality etc. Please PM me for more info and images/offers if interested. EDIT - I am after other theropod teeth in return Paul

I haven't been on the forum much over the last several years but I thought I'd share an article about a specimen I discovered in Montana in 2016; our KU Juvenile Tyrannosaurid. I was also hired as an assistant preparator at the KU Natural History Museum and I have been working on the specimen for several months. There is more material to the specimen than is shown in the video but we hope to share more as we move forward on our publication. https://www.history.com/news/tyrannosaurs-rex-montana-paleontology-discovery We are very proud of our KU fossil and it will hopefully answer several of the questions surrounding the Nannotyrannus debate -Kris Super