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Showing results for tags 'Tyrannosaurus Rex'.
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Hi y'all, got this small theropod in the mail; I bought it suspecting it was Tyrannosaurid. Upon in-hand inspection, I believe that suspicion is confirmed. It bears close resemblance to one of my larger juvenile T. rex maxillary teeth. It also appears to have a slight pathology near the apex - a slight bend. @Troodon Tyrannosauridae Hell Creek Fm., Wibaux Co., MT, USA CH: 9 mm Mesial serration density: ~ 5.3 / mm Distal serration density: ~ 5 / mm Serration densities: Serrations: Here the pathology is more evident: Base (comparison with other T. rex maxillary tooth, right):
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From the album: Dinosaurs
Tyrannosauridae Hell Creek Fm., Powder River Co., MT, USA ~ 3.6 / mm Notice that the enamel is still clear, with the dentine visible underneath. If Nanotyrannus is valid, then this is Nanotyrannus. -
From the album: Dinosaurs
Tyrannosauridae Hell Creek Fm., Powder River Co., MT, USA If Nanotyrannus is valid, then this is Nanotyrannus. -
From the album: Dinosaurs
Tyrannosauridae Hell Creek Fm., Powder River Co., MT, USA If Nanotyrannus is valid, then this is Nanotyrannus. Note that the serrations wrap around the tip ("apex") of the tooth as is common in unworn Tyrannosaurs. -
Montana State Museum of the Rockies - July 2021
AlexSciChannel posted a topic in A Trip to the Museum
So over the past few days I was visiting Bozeman from Raleigh North Carolina as I was visiting the MSU campus because I've been accepted to start as a freshman in autumn 2021. And I hope you know what I am trying to major in. I mean you know what forum we're on I don't have to spell it out. Anyway, in that time I managed to spend all day visiting the Museum of the Rockies which is considered one of the Mecca halls for paleontology. Our crazy old boi Jack used to be Prof and curator there before... well you know. My home museum, the NC Museum of Natural Sciences are taxonomic lumpers when it comes to paleontology but they are passive lumpers. They are nothing compared to what the MOR has going on holy snarge I was surprised. I like going to different museums like this because it shows different perspectives based on findings that vary by institution. While I don't agree with a lot of it, it's healthy to expose oneself to different ideas and conclusions. Also I just couldn't help but feel giddy in the midst of all these dinosaurs. I'll update this post with pictures in a few moments... I will also post what the info cards on the exhibits state about each specimen. Here is Big Mike. A metal replica of MOR 555 commonly known as the Wankel although now more known as the Nation's T. rex since the og skeleton's move to the Smithsonian. I spent at least 30 minutes admiring the sculpt of this beautiful beast alone. Our first is a tibia of a Hadrosaur indet. found in 80 mya rock in Chotaeu, Montana so likely the Two Medicine Formation however this is unique because this is from it's lower strata which we don't know much about that's why it isn't identified as Maiasaura, as that dinosaur lived later. Here are some nice trace fossils and geology stuff, Here's the Precambrian globe Here's how sediments move through time. There's dioramas too. Starting with the Cambrian of course with Anomalocaris and working our way up. Here we're getting some Ordivician and Silurian description, Devonian like creatures. Although Coelocanths first evolved 400 mya they live all the way up to the present day. Stethocanthus below Next we start going in depth into the dinosaurs more updates coming stay tuned...
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From BBC News. Suez Canal: T. rex stuck on Ever Given arrives at golf course - BBC News
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From the album: Dinosaurs
Tyrannosaurus rex (Juvenile) Hell Creek Fm., Garfield Co., MT, USA ~ 13 mm crown height ^wonderful art by RJ Palmer Fossil in Collections: http://www.thefossilforum.com/index.php?/collections-database/chordata/dinosaurs/juvenile-tyrannosaurus-rex-tooth-r2081/ The lighting wasn't very good, so I might redo this photoshoot later. -
From the album: Dinosaurs
?Tyrannosaurus rex Lance Fm., Weston Co., WY, USA 1" X 1.5" X .5" I got this bone perhaps foolishly last year (although it wasn't very expensive at all; that coupled with the provenance that follows is why I got it). It was sold as a T. rex bone chunk, like many you can find online. There is nothing identifiable about these hunks of bone - you need something more substantial like a whole bone to be certain. I got this bone from a seller who finds many of the fossils himself, was director of a small museum in South Dakota (now gone I believe), and found T. rex "Ivan." This bone was in association with a (pes) claw, toes, metatarsals, tibia, ischium, gastraila, and other limb bone chunks in one site that he identified as all belonging to T. rex. The credibility of the seller and the association I think makes a good case for this being from T. rex. If you really want to spend your money on something like this, you need association (ideally with photos available), and an authoritative source doesn't hurt. -
Marshall, C.R., Latorre, D.V., Wilson, C.J., Frank, T.M., Magoulick, K.M., Zimmt, J.B., Poust, A.W. 2021 Absolute Abundance and Preservation Rate of Tyrannosaurus rex. Science, 372:284-287 OPEN ACCESS PDF GOOGLE NEWS FEED
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Identification: This tooth was sold as being from a Dromaeosaur. The serrations' shape and their similarity on both carinae say otherwise. In the Hell Creek Formation, there are potentially two Tyrannosaur species. If Nanotyrannus is invalid, then this is automatically a T. rex tooth. For those who consider Nanotyrannus to be valid, this tooth is still T. rex based on the robustness of the tip and serrations, and the CHR (Crown Height Ratio). Tyrannosaurus maxillary teeth may still have minor basal compression, as this one does. This is from a juvenile animal based on its small size and feeding wear (thus it's not a germ tooth). Thanks to @Troodon and @hxmendoza for their help with identification. I also contacted Christophe Hendrickx, who also said it was from a young T. rex. Other: Mesial Serration Density: ~ 4 serrations / mm. Distal Serration Density: ~ 4 serrations / mm. Note: Serration density alone is not an identifying feature of Tyrannosaur teeth this small. This tooth is from the right maxilla based on the wear on the lingual face. Feeding wear is also visible on some of the serrations. Citation: OSBORN, HENRY, 1905. Tyrannosaurus and other Cretaceous carnivorous dinosaurs, Bulletin of the AMNH, Volume 21, Article 14, Pages 259-265, https://digitallibrary.amnh.org/handle/2246/1464
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I just stumbled upon this news and find it kind of weird, that a german museum puts together an original T-Rex for someone from the USA. Does anyone have any information on this specimen? why not give it to an US Museum? Too expensive maybe? I mean shipping it to Germany and back to the USA wont be cheap. CLICK Article is only in German, but Google Translate does the job. (in the picture, the T-Rex that is standing here in front of the bones is Rocky, the Museums own original T-Rex) Here is a tour through the museum with some more pictures from Rocky.
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From the album: Dinosaurs
Comparison of Tyrannosaur denticles (serrations) from the Hell Creek Formation. All of the images are set to the same scale Some differences are likely associated with position in the mouth and/or feeding wear. So, this may not be a perfect illustration of purely ontogenetic variation. The adult T. rex denticles are from an unknown position and carina (being from a tooth fragment), the juvenile T. rex denticles are from the distal carina of a right (rear?) maxillary tooth, and the infant T. rex denticles are from the distal carina of a posterior tooth. The Nanotyrannus denticles are also from the distal carina of a posterior(?) tooth. The Nanotyrannus denticles are noticeably different. That could be because of lack of wear, age of the animal, because it may be a different species, or a combination thereof. -
How Big was G-Rex/MOR 1128? (Length, Height, Weight)
AlexSciChannel posted a topic in Questions & Answers
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.
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From the album: Dinosaurs
Tyrannosaurus rex Hell Creek Formation Garfield Co., MT, USA Note: From the right maxillary of a juvenile animal, but still has adult qualities like a robust tip and denticles. -
From the album: Dinosaurs
Tyrannosaurus rex Hell Creek Formation Garfield Co., MT, USA Note: Juvenile animal -
From the album: Dinosaurs
Tyrannosaurus rex Hell Creek Formation Garfield Co., MT, USA Note: Juvenile animal -
From the album: Dinosaurs
Right maxillary tooth from a juvenile animal.- 1 comment
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Greetings, I have now received some pieces of bone, it should be pieces of bone from the Tyrannosaurus' head ... it should be one individual ... if anyone can confirm or refute it, or even know which part of the skull it is. ..I would be very grateful ... for some pieces, I already have an idea where they fit ... I photographed every piece of bone 5 times ... you can see a part of the surface of the bones at each one .. I just don't know if I'm wrong, so I'd rather ask here, the more erudite ones ... thank you for your time
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Please identify this tooth, unfortunately I do not have more photos available, nor the location of the find, or any information, but I think that identification is possible anyway ... maybe the color, the guidance of the curve will reveal something ... thank you for your time.Luk
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A new "T-Rex" tooth just showed up on our favorite site. It is not a Tyrannosaurus rex tooth however but a more common and far cheaper Carch tooth. We know this because of its more blade-like morphology, its slender profile, its shape, its smaller denticles and the sand on the base I already notice multiple bids on it and I have no doubt the price would escalate as many hopeful collectors would try their hands on getting a cheap T-Rex tooth for themselves. For anyone looking to buy a true T. rex tooth, there are several factors to take note of: 1) Thickness - T. rex had crushing teeth, hence the teeth are thick. They are meant to crunch through bone 2) Locality - T. rex teeth in the market commonly comes from the Hell Creek Formation and Lance Formation. These two formations are found in Montana, Dakota and Wyoming. If a tooth originates from Africa or Morocco, it cannot be a T. rex tooth 3) Price - T. rex teeth command a premium price. Even a small tooth an inch long may cost 500 USD or more. A 2.5 inch tooth would easily be 2k USD. While exceptions do occur, if a deal seems too good to be true, then you should be extremely wary 4) Source - Make sure you get your T. rex tooth from a reputable source. By that, I don't mean a seller with a high feedback score or someone who prints you a "cert of authenticity". I mean a seller who has a history of collecting or selling Hell Creek/Lance Formation material. Better yet, get it from someone who digs there 5) Morphology - Educate yourself on the differences between T. rex, Carch, Spino, Daspletosaurus and other large theropod teeth. That way, you can immediately spot inconsistencies such as serrations or colors that does not match a T. rex tooth 6) Cross section - If all else fails, look at the cross section. If the tooth has red sandy matrix or sand, it is most likely not T. rex but is more likely from Morocco Here, I will show an example of a red T. rex tooth that superficially resembles the Carch tooth above. Take a look at the thickness and cross section though and you would quickly realize both teeth have very different morphologies Getting an authentic T. rex tooth isn't cheap, nor will it be easy. But it will be worth it in the end when you finally obtain one. Good luck in your hunt and always feel free to ask TFF if you are unsure of an upcoming purchase
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I obtained a nice Tyrannosaurus Rex tooth from the Lance Creek Formation of Wyoming. It was a good opportunity to try my hand at restoration. The tooth was around 80% complete, with some of the root missing and a dent near the tip. I only wanted to restore the latter part. Pretty good job, I think.
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Hi everyone! I have a large claw from the Hell Creek Formation of Harding County, South Dakota that I was hoping to have help identifying. It is large enough that I initially believed it stood a chance at being tyrannosaurid, but it seems a bit more compressed than tyrannosaur claws I’ve worked with in the past - particularly on the lower ridge. The ventral surface of the claw is also distinctly flat rather than rounded, which seems unusual. Could this be a Dakotaraptor claw or is that just wishful thinking? Large Anzu perhaps? It is right around 1.75 inches across the length of the claw (sorry, no metrics on this ruler). I have referred to the incredible guide posted by Troodon, and have some experience with various claws, but I still can’t quite come to a conclusion on this one. What are your thoughts? Thanks in advance!
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From the album: Dinosaurs
A high-quality replica of Stan's posterior right dentary tooth. About 4.5" in length. -
From the album: Dinosaurs
Two teeth from Tyrannosaurus rex at different growth stages. The adult is a replica of a posterior right dentary tooth of Stan. The baby/juvenile is also a posterior tooth (about 6 mm long), found in the Hell Creek Fm. (more info: http://www.thefossilforum.com/index.php?/collections-database/chordata/dinosaurs/baby-t-rex-tooth-r1992/). It could also be a dentary tooth based on the wear patterns, but I'm not sure. -
T. rex posterior dentary tooth mesial carina
ThePhysicist posted a gallery image in Member Collections
From the album: Dinosaurs
Posterior dentary tooth replica from Stan the T. rex (11th from front). Note there is a slight "twist" of the mesial carina in this specimen.
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