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Hell Creek Dromaeosaur or Troodon Partial Humerus.... OR plain turtle?
rkfrace posted a topic in Fossil ID
Hello beloved community. Anybody able to weigh in on this specimen's ID. It was labelled as "Dromaeosaur or Troodon Humerus, Hell Creek, Harding County, South Dakota. 1 and a half inches" My hope is that the ID is correct, and the humerus belongs to a baby. My fear is that it's 'just' a Hell Creek turtle humerus. All insight deeply appreciated!- 1 reply
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Don't know if this is the right forum for it, but I noticed our valued member @Troodon has been missing from this forum for the past 3 weeks. Just wanted to check if he's okay.
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From the album: Hell Creek / Lance Formations
This rare theropod tooth was found via screen washing matrix from a channel deposit. It's large for the species and from the front of the jaw. All of the denticles are intact - a spectacular specimen. Pectinodon (meaning "comb-tooth") is a tooth taxon, since no remains attributable to the genus beyond teeth have been found. Pectinodon seems to be a rare member of the Hell Creek fauna, with their teeth being fairly uncommon (though being so small, I'd guess that few people actively search for them). It was a small Troodontid theropod, with teeth that couldn't handle stresses as well as their Dromaeosaurid and Tyrannosaurid cousins (Torices et al. (2018)). This coupled with their small size suggest that Pectinodon was a small/soft prey specialist, preferring the rodent-sized mammals of the time, lizards, insects, etc. Some researchers have proposed omnivory as a possibility for Troodontids (cf. Holtz et al. (1998)). Troodontids famously are regarded as among the most intelligent dinosaurs for their large brain size / body size ratio. This notion serves as fodder for speculation that had the dinosaurs not gone extinct, Troodontids (Pectinodon being (one of?) the last) would have continued to grow in intelligence and develop sentience and civilizations. Troodontid teeth like Pectinodon can be easily identified by their small size, exaggerated, triangular, apically oriented posterior serrations.- 1 comment
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Kind of interested in this fossil, says it's a troodon tooth, wanted a second opinion. It's from the hell creek formation.
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Over the past few months I have seriously been doubting the validity of Troodon. For the majority of the time I’ve known about Troodon I thought it was valid, however I’ve started to doubt its validity. The main reason is that it’s only described from one tooth. I thought I’d bring this question here because there’s a lot more people here that know more about paleontology and taxonomy than me. Thanks for any help!
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Happy Sunday! I got this tooth a while back and figured I'd follow up my recent Troodon premax tooth ID post with it. It's 6mm long and is from the Judith River formation in Hill county, Montana. I ran it by @Troodon back when I was considering buying it and he thought it was a patho Troodon premax, but that was before I had good pictures of it. Please let me know if these also support that identification. Thank you!
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Hope everyone is having a nice weekend. I'm thinking this 6mm tooth (perhaps 7mm, if not for wear) from the Hell Creek formation of Garfield co, Montana is a Troodon premax. What do you think?
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From the album: Hell Creek / Lance Formations
Pectinodon (meaning "comb-tooth") is a tooth taxon, since no remains attributable to the genus beyond teeth have been found. Pectinodon seems to be a rare member of the Hell Creek fauna, with their teeth being fairly uncommon (though being so small, I'd guess that few people actively search for them). It was a small Troodontid theropod, with teeth that couldn't handle stresses as well as their Dromaeosaurid and Tyrannosaurid cousins (Torices et al. (2018)). This coupled with their small size suggest that Pectinodon was a small/soft prey specialist, preferring the rodent-sized mammals of the time, lizards, insects, etc. Some researchers have proposed omnivory as a possibility for Troodontids (cf. Holtz et al. (1998)). Troodontids famously are regarded as among the most intelligent dinosaurs for their large brain size / body size ratio. This notion serves as fodder for speculation that had the dinosaurs not gone extinct, Troodontids (Pectinodon being (one of?) the last) would have continued to grow in intelligence and develop sentience and civilizations. Troodontid teeth like Pectinodon can be easily identified by their small size, exaggerated, triangular, apically oriented posterior serrations.-
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From the album: Hell Creek / Lance Formations
Even in the final years of the non-avian dinosaurs, the paravians remained diverse, with many species represented in the famed Hell Creek formation.- 1 comment
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Hello and thank you for checking this out. I got this tooth a while back. It comes from the Judith River Formation and is about 8mm apical length. The serrations seem large to the tune of Troodon, but they're too worn to be certain that they point apically throughout the posterior carina. (It was sold as Pectinodon, but I'm not seeing that.) What do you think it is? Thanks!
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Another day, another art project for school I’m working on. This time it’s supposed to be inspired by google doodles, so I chose to do the 19th century paleontologist Joseph Leidy. He’s lesser known than his student, Cope, but his finds contributed hugely to North American paleontology. My first concept was to simply have him standing with a Troodon to the left, but that was quickly scrapped. I then went with some light thumbnail sketches, and found one I liked before starting to do an inked version of it. This ended up being the more finalized thumbnail sketch of the piece. He is seen brushing away the dirt on a Troodon bone, with a Troodon watching, and a herd of Edmontosaurus watching the oncoming rain clouds in the far background. I then cut a piece of matboard to size to fit the assignment and started drawing the composition. I’m using an opaque watercolor for this piece. A quick photo to check value issues. The Edmontosaurus in the foreground is simply blocked in here, I have not started actual work on it, which it why it remains so dark and blocky. Pretty quickly I could see the mountains were much too dark, and the rain is much too light. The grass in the foreground is much too light as well. I had 20 minutes to fix things before class ended, so I went with repainting the sky, as well as the mountains. I’ll have to touch this up. I’ll also have to repaint the Edmontosaurus in the background. size on this piece is I think 12 x 30”. I am also doing another Troodon in ceramic clay, which will be fired at a later date in a kiln. Pretty sure my classmates are confused why I’m doing dinosaurs in a pottery class.
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From the album: Lance fm. Microsite Finds
Another shot of the Pectinodon tooth featured earlier in this album, this specimen was found by my dad and is one of two Troodontid teeth in my collection. -
Found lots of teeth today, here’s some I need a little help with as I’ve never found these before. I think one is a troodontid, one is maybe dromaeosaur, and the other I have no idea. (Apologies for the quality, my phone isn’t good macro photography) Dinosaur Park Fm
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Help IDing tooth (sorry for the images). I was told Troodon, but I'm super confident it's not.
NewToothCollector posted a topic in Fossil ID
Hello folks. I'm a fairly new collector, but have done a lot of homework over the few months while I've been getting started with this hobby. The one specimen that I really want in my collection is a Troodon tooth. I just love the way they look. I'm pretty comfortable with where I usually get my teeth, and have a lot of confidence, but I haven't come across a Troodon. I found a seller that had this labeled as Troodon, but had some super blurry photos. I was very skeptical, because the serrations did not look right to me, even from the seller photos. The seller told me that if I get confirmation it is not Troodon, they will gladly give me my money back if I return the tooth. That made me purchase it, just in case I was missing something. So, I got the tooth, and from the naked eye it's impossible to see. I don't have any great camera gear or a super macro lens or anything, so this is the best I was able to get. From looking close up, I'm still incredibly confident that it's not a Troodon, but maybe someone here can prove me wrong (like @Troodon, perhaps)? My gut is telling me it's some sort of dromaeosaurid, what do you all think? The only info the seller provided was 0.32" and Judith River Formation/Northern Montana. Is it just super worn? Every Troodon tooth I've seen photos of has serrations on both sides. If these photos aren't good enough, I'll try to take some better ones. There's a lot of shadow and I can't get super close. These were (surprisingly) taken with an iPad, which gave me the best picture of any camera I had. Nothing next to them for scale, which I can add if needed. But like I said, the seller said 0.32" and that's about right from how tiny it is. Basically I'm trying to figure out if I should get my money back or not. Even if it's not a Troodon, if it's something of similar value (I know, value is in the eye of the person paying for it), then I'll probably just keep it anyway to add to my collection. Thanks for the help. -
What Is The Complete List Of Dinosaur Species Known From Hell Creek, Including Tooth Taxons And Synonymous Species?
Mioplosus_Lover24 posted a topic in Questions & Answers
I have yet to see a conclusive list of EVERY dinosaur known from the Hell Creek Formation, I am curious if anyone has one or knows all the dinosaurs, thank you!- 4 replies
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- dromeosaur
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Hello, now, apologies for the photos. They're the best the seller can get, I'm afraid. But hopefully they are ok to get some sort of ID/confirmation. He has a selection of Hell Creek teeth. They are all very small--ranging from below 1cm to just above 1cm in length. 1 - Troodontid -- not the clearest image, but they seem to have distinctive denticles which are common in troodontid teeth? I don't think Troodon is from Hell Creek, but I see online it says Troodontid teeth have been found there. Seller has a more precise location of Harding County, South Dakota for these. 2 - Sold as possible Richardoestia -- Again, not the best of pictures. But hopefully it's enough to get an idea. To me, these look like they're more than likely a reptile tooth? 3 - Unknown, possibly a raptor? Again, not the best image, but hopefully it's enough. Many thanks--and sorry for the poor pics. Even if exact species can't be confirmed, any ideas or possibilities would be, as always, much appreciated
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Good afternoon, I found this tooth on a fossil website for a great price and had to get it! Now the part I’m struggling with is wondering whether or not it’s a troodon specimen or pectinodon specimen. The pictures are kind of dark so I can’t really see any mesial serrations. Basic info: The tooth comes from the Hell Creek FM and is 0.12” long. What do you guys think? I’m leaning towards pectinodon.
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Sorry, but Troodon formosus is a valid taxon! check it; OK, I feel like I have to clear this up. This isn't meant to be trolling only posting some of the answers Jack Horner gave me on twitter answering my question. I am not trying to offend anyone. This is simply teasing and supposed to be fun in games.
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- t. formosus valid
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I found this tooth in my Aguja matrix and the serrations are way larger than any of the other teeth I've found! I can take more pictures but this tooth is so tiny and I'm unsure of it's exact measurements.
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Hey guys, I think these may be troodon tooth, but I’m not really sure can you guys help my identify this tooth?(the one on the right)
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Hello everyone, On this edition of Rex or nano, we have this nice little mailbox score I got earlier this year. The seller and I are reasonably certain that it is a young adult rex. But I wanted to bring it to you folks to get your assessment. It matches the locality of Rex ( hell creek, from a microsite in Carter county) and based on my research from the forum and elsewhere it checks out as tyrannosaurid. (Ie: robustness and seemingly no pinch) Bonus question: I'm also curious on the placement of the tooth in the animals jaw. I have reason to believe it may be a right maxillary tooth.
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These egg shells were found at a site in Montana with some troodon teeth are these possibly troodon egg shells? There around 1mm thick with a smooth surface
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An interesting article “proving” most dinosaurs were warm blooded and that Troodon may have been able to switch back and forth to cold bloodedness. https://www.discovermagazine.com/planet-earth/fossil-eggshells-suggest-all-dinosaurs-may-have-been-warm-blooded https://news.yale.edu/2020/02/14/were-dinosaurs-warm-blooded-their-eggshells-say-yes
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11 Troodon Clutch
BadlandTraveller posted a topic in Is It Real? How to Recognize Fossil Fabrications
Seen on an auction site. I highly doubt its a Troodon clutch but I thought I'd throw it out to the forums and see if anyone can ID it. Thanks