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Real Nannotyrannus tooth?
ruminate posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hello everyone! Saw this nannotyrannus tooth for sale,is it really from nannotyrannus? Could it be something else? Any help would be apperciated IMG_8742.MOV dn02-2c.avif dn02-4c.avif dn02-3c.avif -
From the album: Hell Creek Formation Microsite
A representative sampling of the diversity captured in microsites - everything from Tyrannosaurus to mollusks.- 6 comments
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Location: Hell Creek formation, Carter county Very small tooth so it was pretty hard to get good and clear photos. I’ll try to add some better ones later today. I have two confirmed Nano teeth I used as a comparison, they both look more slender than this one, but I’m not sure.
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Hi I’ve been looking for a juvenile T Rex tooth and I came across this one, I was wondering if I can have some help to see if this is real? Thanks -Daniel
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From the album: Hell Creek / Lance Formations
Microfossils are the means by which we can most fully appreciate the diversity of a past ecosystem. From salamanders to Tyrannosaurus, an ancient river captured and preserved dozens of species that lived in Montana 66 million years ago, at the terminus of the time of dinosaurs. In this small collection alone, I count at least 27 species of dinosaur, lizard, crocodile, fish, shark, salamander, turtle, mammal, and mollusk.-
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OK thank you guys for the info!! I traded a couple worker a mentoring for this thing! I polished it, and looks like a tooth to me
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Are Tyrannosaur fragments from hell creek really available for sale ? Any details on how they are labeled 'Tyrannosaur' would be helpful.
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https://www.bbc.com/future/article/20230214-could-dinosaurs-get-cancer
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- airsacculitis
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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.-
- aublysodon
- aublysodon mirandus
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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.-
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- aublysodon
- aublysodon mirandus
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Hey all, This is an unusual ID post. It's actually of the first tooth I ever posted on TFF. Back then I was primarily confirming that it was in fact T Rex and trying to get some understanding of what damage to the tooth was likely to be antemortem/perimortem/postmortem. The tooth is from the Hell Creek in Powder River co, MO and it's about 3". When it was sold to me, the seller felt he was seeing enough antemortem/perimortem trauma that he thought it was safe to say this tooth had seen its share of combat. The most interesting new bit of info someone offered me was that they've seen a number of teeth with the base-break trauma looking the way it does here and he believes they were shorn off during face-biting combat by a tooth of the opponent's. He was referring to the relatively clean slice-break that the tooth suffered rather than having the normal jagged break--and the presence of what appear to be serration-related chips/racking along the edge of the base-break (i.e., from an opponent's tooth). I've also learned a bit about T Rex face-biting since then, including the fact that it seems to occur when Rexes are in that sort of pre-adult growth spurt. This tooth seems to fit that category too, size-wise. I'm wondering if this looks like a battle-damaged and shorn off tooth to you. Thanks!!
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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, Tyrannosaurs often broke them in the process of biting. It may have been a while before the broken tooth was replaced by a new one, so in the meantime, the broken tooth would continue to accumulate wear. This is one such tooth, a large portion of the tooth was broken off when the animal bit into another dinosaur, and it was still used afterwards for some time before it was replaced. Based on the placement and extension of the carinae to the base of the tooth, and the size, this was an anterior tooth (at the front of the mouth, probably the first dentary tooth) of an adult individual. See Schubert & Ungar (2005) for a discussion on Tyrannosaur tooth wear features (open-access).-
- antemortem wear
- hell creek
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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, Tyrannosaurs often broke them in the process of biting. It may have been a while before the broken tooth was replaced by a new one, so in the meantime, the broken tooth would continue to accumulate wear. This is one such tooth, a large portion of the tooth was broken off when the animal bit into another dinosaur, and it was still used afterwards for some time before it was replaced. Based on the placement and extension of the carinae to the base of the tooth, and the size, this was an anterior tooth (at the front of the mouth, probably the first dentary tooth) of an adult individual. See Schubert & Ungar (2005) for a discussion on Tyrannosaur tooth wear features (open-access).-
- antemortem wear
- hell creek
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Hello! I saw this interesting tooth for sale and I’m on the fence about purchasing it. It’s a .66” Nanotyrannus tooth from Garfield county Montana. The tip is restored but that doesn’t bother me. I’m posting because the base seemed a lot thicker than a lot of nanno teeth I see, and I also couldn’t really tell if there was any of the typical “pinching” on the sides. I was hoping for help determining if this is a Nanotyrannus tooth, or possibly a T. rex. Thanks!
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Not really a lot of answers. From BBC News : https://www.bbc.com/news/science-environment-62088874
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- argentina
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Hello all, looking to get some opinions. 5-6 years ago I came across a ton of fragmented bones while scouting out a new collecting site. One of the first things that really caught my eye was this, lets call it a "claw". Like I said this was among a ton of shattered bone so it kind of stood out right away. I followed the bone fragments more up a very steep hill that turns into a cliff. This led me probably 50-75 feet from the initial sighting of bone to a place that was dangerously steep, but I could see more bone weathering out of the hill. It was in very bad shape and turned out to be a few vertebra. On my way up I also several pieces of what turned out to be a vertebral process. I collected what I could but a lot of it had turned to dust. I could tell there was more but there was almost no feasible way to safely dig. I began to look at what I was able to collect and I started seeing some interesting things. Some of the pieces of vertebra were very porous with large pores and I had found the "claw" at the base of the site. Could it be? Life got in the way, and I was not able to get back out until this year. To my surprise there is still bones weathering out. I found another vertebra in bad shape, and a shattered rib that I was able to reasonably piece together. This came out with minimal excavation and I saw there was more bone exposed at the same level around 6 feet away. It appeared to be another rib or flat bone, but it was in an even more difficult spot. Could these be Tyrannosaurus bones? I will include many more photos soon. Dawson county, MT.
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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.).-
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- juvenile tyrannosaur
- nanotyrannus
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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.).-
- juvenile tyrannosaur
- nanotyrannus
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From the album: Hell Creek / Lance Formations
A young T. rex tooth. The preservation of the enamel is fantastic, and I like the dark hues. The serrations are also in great shape. There is some minor feeding wear on the tip.-
- hell creek
- hell creek formation
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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).-
- hell creek
- hell creek formation
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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).-
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- lance formation
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Hi all, Been trying to look for possible readings/ images of anterior dentary teeth of trex vs nano. Not sure if im finding it in the right place, but was wondering what a nano anterior dentary tooth would look like? As I dont think I have seen a nano anterior dentary tooth for sale, mostly rex for some reason. As i think those teeth look almost similar to a premax, though from what i remember, it would be highly unlikely to distinguish between a nano and rex premax unless the roots were still attached. Would you guys maybe know if there are any morpholoical differences between an anterior dentary of a rex and nano? If anyone also has some personal specimens they'd like to share, please do feel free to show off if you'd like. Thanks!
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- nanotyrannus
- t rex
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From the album: Hell Creek / Lance Formations
Tyrannosauridae (Cf. Tyrannosaurus rex) Hell Creek Fm., Wibaux Co., MT, USA This minute tooth is indeed Tyrannosaur: the mc/dc serration densities are virtually identical, and the denticle shape is not like those of Dromaeosaurids. It also has a slight pathology near the tip.-
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- hell creek formation
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