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Found a partial theropod claw and some other one, not sure if it’s even a claw but I figured I would check. dinosaur park fm

Hey all, Curious to see if you have similar thoughts about this tooth. In terms of that possibility that it's not, in fact, from the Jurassic, I'm not sure I'm seeing the kind of denticle shape/hooking and marginal undulations of Majungasaurus. From Isalo IIIb in the Mahajanga basin of Madagascar CH: About 27.6mm CBL (carina-to-carina): 13.9mm CBW (mesial side to distal side): 7.5mm Mesial Serration Density: 2.2mmm Distal Serration Density: 1.9/mm Thank you!

Hi all, Curious to know what family you think this tooth likely came from. Could it be Allosaurid? From Isalo IIIb in the Mahajanga basin of Madagascar CH: About 27.5mm (estimating for tip) CBL (carina-to-carina): 14mm CBW (mesial side to distal side): 8.5mm Mesial Serration Density: 1.9mmm Distal Serration Density: 2.1/mm Thank you!!

Hi everyone! I have my eye on what looks like a nice Spinosaur claw from the kem kem, or at least that what the seller claims it is. It does seem to have that round divot under the base of the proximal end that I've seen described as telltale, but you can never be to careful with kem kem claws which might just be the most outright faked fossil on the market so I figured I'd ask for an independent opinion on the potential of funny business (besides what looks to be one or two repaired breaks near the tip). Measurements given are 8.5 x 3 cm. Any insight is appreciated as always!

Hi everyone! I've had this little Kem Kem tooth for a while now and was hoping for some help IDing it. My gut is telling me premax, maybe from a little Carch which I'm guessing from the thickness though it will probably wind up in the indet. Theropod pile. No base to provide CBL and CBW so I took measurements at the best cross section that was left. There is a mesial carina though it is very subtle and only extends halfway down the specimen's length. Any insight is appreciated as always!

Been trying to identify this digit for a while. Recieved it as a gift from a friend. I can't remember exactly if it was from Wyoming or Montana, but it was one of the two.

Fragment takes up most of the sediment which is 1.5cm please not the serrations in the photos. All photos are the same with different lighting. @Troodon @jpc Is this actually a tooth fragment or are the serrations fooling me?

Big news today impacting the ongoing controversy if large theropods were lipped. Abstract: Large theropod dinosaurs are often reconstructed with their marginal dentition exposed because of the enormous size of their teeth and their phylogenetic association to crocodylians. We tested this hypothesis using a multiproxy approach. https://www.science.org/doi/10.1126/science.abo7877 Mark Witton blog http://markwitton-com.blogspot.com/2023/03/new-paper-fresh-evidence-and-novel.html

The other day, I was indebted to you for the spinosaurus vertebral fossil. I have a question. Does the dinosaur's air sac match the marked part in the picture? The fossil in the photo is the sacrum of spinosauridae. Thank you . (⌒‐⌒)

Is there a way to distinguish the vertebral of theropods and ornithopods? They the same to the untrained eye.

Hello, I saw this tooth labeled as an allosaurus from the Morrison formation. Not sure if it’s allosaurus but does look to be. Tooth is from Moffat Counth Colorado. Also is that a sauropod tooth on the matrix on the 2nd pic? Allo tooth is 4.1 cm. Thanks.

Hi all. This is my take on Deltadromeus agilis, the "agile delta runner". Here it is chasing a nice fat beetle.

Just want to get some opinions before I purchase a tooth. Do you guys think this is definitely a Dakotaraptor tooth? Or does it look more Nano? Size is .71” and it’s from Hell Creek Formation, Garfield County, Montana. 24506BD7-17AC-42BF-B3C6-7C613A84332B.webp 31C05BFB-8621-4C95-9A7A-4A92A0C553D7.webp E6280DD3-5623-4D78-966F-F7A20751CEFB.webp 7CFB9AAF-269D-48B6-A26E-5265AE476524.webp E04ED762-40B5-42D1-BADA-52A77A44425B.webp

Is this a theropod claw? Also, is this from Niger, rare? Please tell me. Thanks in advance.

So when I purchased this tooth it was listed as Timurlengia, however I know there have been recent discoveries of both a large Dromaeosaurid and carcharodontosaurid from this formation. Is there any way to figure out if this is Tyrannosauroid for sure? Uzbekistan - Bissekty Formation @Troodon

HI all! I am pretty sure this is a theropod tooth - it has carinae but only on one side. It's curve is odd though. I can't quite seem to place an ID on it. Any help will be appreciated! It's 4 mm

Just purchased this phalanx toe bone. It was sold as Spinosaurus, however I guess it's impossible to ID it like that. Just want confirmation it's indeed a theropod phalanx toe bone. Location: Taouz, South Morocco Size: 4cm (1.58")

Hi everyone, I recently acquired a batch of small theropod teeth and was hoping to get a second opinion on some ids since a few seem kinda special. The first one I'm really leaning towards Dakotaraptor. 2-5 I'm not sure. They're all very similar looking but have very different base shapes including oval, almond, pinched rectangle, and pinched almond. The serration densities are also very interesting. The mesial serrations on all are much smaller than the distal serrations. The last one I think is a really tiny T-Rex. It's a dead ringer for a large Rex just very small. All six are from The Hell Creek of Carter County, Montana. Any insight is greatly appreciated as always! Tooth 1: Tooth 2: Tooth 3: Tooth 4: Tooth 5: Tooth 6:

This is a digital study of the head of Rugops primus. I screwed up some of the teeth (too recurved). I really should know better, haha.

Hello and good evening. I found that in an unexplored area besides a river ,in a village close to Athens, Greece. Through research i find many similarities with claws of small theropods. Its size is around 3 cm length. Any ideas what exactly is it? Appreciate your time.

I bought this tooth and in my limited knowledge I'm not sure it's a raptor, I do not have a big collection of teeth to compare it to, so I figured I'll ask the experts. Hellcreek formation, MT. 4 denticles/mm it's the same both sides, 13.6mm CH, 4.2mm CBW, 9.07mm CBL both sides denticles look the same to me. If any more pictures are needed, I can get them. also sorry about the photos I'm getting a better magnifying device, my little coin one isn't too good for big over all pictures.

New paper on cf. Spinosaurus dental pathology. https://www.sciencedirect.com/science/article/pii/S0195667123000277 Paywalled

Hi all, Any thoughts on the ID of this claw? About 3 cm long, sold as ?dromaeosaur claw from Hell Creek, Slope County, ND. The phalanx was found in the same location but not articulated. I've chewed through the excellent "Identification of Claws/Unguals from the Hell Creek/Lance Formations" topic but can't quite fit it to anything!

The Eumaniraptora is a clade of non-avian theropod dinosaurs that first emerged during the late Jurassic period and diversified extensively during the subsequent Cretaceous period (143-66 Million years ago). This group is most famously known as the Raptor dinosaurs (the sister clade of the theropod dinosaurs that gave direct rise to the birds), consisting of mostly small to mid sized theropod dinosaurs. There are a few species though that exceed the typical small-medium size range for the raptor dinosaurs. Only a few giant raptor dinosaurs are currently known. But recent discoveries over the past few decades have demonstrated large raptor dinosaurs were less of an exception in Cretaceous ecosystems than previously thought. Here is a list of all the currently known giant Eumaniraptora from the fossil record which hopefully can expand our understanding the vital roles these animals played in the ecosystems they once inhabited. Let me know if I forgot any examples. South America Austroraptor cabazai (Dromaeosauridae - Argentina, South America) (Late Cretaceous (78-66 Million Years ago)) (grew up to 6 meters (20 feet) in length) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2679073/ Antarctica Imperobator antarcticus (Eumaniraptora - part of what is now James Ross Island, Antarctica) (Late Cretaceous (71 Million Years ago)) (grew up to 4 meters (13 feet) in length, note: did not have the iconic pair of sickle shaped claw on its feet like most other Eumaniraptora) https://www.sciencedirect.com/science/article/abs/pii/S0195667118300120?via%3Dihub Asia Achillobator giganticus (Dromaeosauridae - part of what is now Mongolia, Asia) (Late Cretaceous (96-89 Million Years ago)) (grew up to 5 meters (16 feet) in length) Perle, A.; Norell, M. A.; Clark, J. M. (1999). "A new maniraptoran Theropod−Achillobator giganticus (Dromaeosauridae)−from the Upper Cretaceous of Burkhant, Mongolia". Contributions from the Geology and Mineralogy Chair, National Museum of Mongolia (101): 1−105. Unnamed Bissekty Formation Giant Dromaeosauridae (Dromaeosauridae (could possible be a species of Itemirus) - part of what is now Uzbekistan, Asia) (Late Cretaceous (92-90 Million Years ago)) (based on Specimens CCMGE 600/12457, ZIN PH 11/16, grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/263891965_Dromaeosauridae_Dinosauria_Theropoda_from_the_Bissekty_Formation_Upper_Cretaceous_Turonian_of_Uzbekistan_and_the_phylogenetic_position_of_Itemirus_medullaris_Kurzanov_1976 https://www.cambridge.org/core/journals/geological-magazine/article/abs/giant-dromaeosaurid-theropod-from-the-upper-cretaceous-turonian-bissekty-formation-of-uzbekistan-and-the-status-of-ulughbegsaurus-uzbekistanensis/4543ABAB1EC19C84405EDF66A5F53124 Europe Unnamed Wessex Formation Giant Dromaeosauridae (Dromaeosauridae (specimens for this species could belong to Vectiraptor) - Isle of Wight, Great Britain, Europe) (Early Cretaceous (125 Million Years ago)) (based on Specimens IWCMS.2002.1, IWCMS.2002.3, IWCMS.2002.4., and BMNH R 16510, grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/222830089_The_first_record_of_velociraptorine_dinosaurs_Saurischia_Theropoda_from_the_Wealden_Early_Cretaceous_Barremian_of_southern_England https://www.sciencedirect.com/science/article/abs/pii/S0195667121003712 Unnamed Giant Dromaeosauridae (Dromaeosauridae - Gorodishchenskii District Russia, Europe) (Late Cretaceous (72.1-66.0 Million Years ago)) (based on Specimen VGI. no. 231/2, grew up to 5.8 meters (19 feet) in length) https://www.researchgate.net/publication/235806763_Carnivorous_dinosaurs_Saurischia_Theropoda_from_the_Maastrichtian_of_the_Volga-Don_Interfluve_Russia North America Utahraptor ostrommaysi (Dromaeosauridae - Western North America) (Early Cretaceous (135-130 Million Years ago)) (grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/285714464_A_large_dromaeosaur_Theropoda_from_the_Lower_Cretaceous_of_eastern_Utah Dakotaraptor steini (Dromaeosauridae - Western North America) (Late Cretaceous (66 Million years ago)) (grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/283655219_The_first_giant_raptor_Theropoda_Dromaeosauridae_from_the_Hell_Creek_Formation Unnamed Marshalltown Formation Giant Dromaeosauridae (Dromaeosauridae - Eastern North America) (Late Cretaceous (72.1 Million Years ago)) (based on Specimen NJSM 14158, grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/327117985_The_distinctive_theropod_assemblage_of_the_Ellisdale_site_of_New_Jersey_and_its_implications_for_North_American_dinosaur_ecology_and_evolution_during_the_Cretaceous https://terpconnect.umd.edu/~gdouglas/raptor/index.html Unnamed Tar Heel Formation Giant Dromaeosauridae ((Dromaeosauridae - Eastern North America) (Late Cretaceous (78.5-77.1 Million Years ago)) (Based on Specimen YPM.VPPU.021397, grew up to 3.4 meters (11 feet 2 inches) in length) https://peerj.com/preprints/26829/ Alaska Troodontid (Troodontidae (could be a species of Troodon or a new genus in Troodontidae) - Prince Creek Formation Alaska, Western North America) (Late Cretaceous (70.6-69.1 Million Years ago) (grew up to almost 4 meters (13 feet) in length) https://www.researchgate.net/publication/236632883_On_the_Occurrence_of_Exceptionally_Large_Teeth_of_Troodon_Dinosauria_Saurischia_from_the_Late_Cretaceous_of_Northern_Alaska Latenivenatrix mcmasterae (Troodontidae - Dinosaur Park Formation, Alberta Canada, Western North America) (Late Cretaceous (75.5 Million years ago)) (grew up to 3.5 meters (11.5 feet) in length) https://tspace.library.utoronto.ca/bitstream/1807/78296/1/cjes-2017-0031.pdf Unnamed Mount Laurel Formation Giant Dromaeosauridae (Dromaeosauridae - Eastern North America) (Late Cretaceous (72.1 Million Years ago)) (based on Specimen NJSM GP 22949, grew up to 3.4 meters (11 feet 2 inches) in length) https://royalsocietypublishing.org/doi/10.1098/rsos.191206 What do you guys think?

Hello! Looking to ID this asian theropod tooth from the late cretaceous of Bayankhongor, Mongolia that is supposedly from Alioramus sp. The serrations are quite worn for this rooted tooth and are hard to see, the entire tooth measures 60mm Below I've attached some pictures, thanks in advance!