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Hi TFF, I am a Dromaeosauridae enthusiast and have been collecting online for a little while now. I want to thank the members here for getting me educated on so many aspects of fossil teeth identification. I want to share my small collection in the hopes this is helpful for some of you in the future. Your critical input is highly appreciated, as always! #1 First up, one of my treasures, a robust Deinonychus antirrhopus tooth from the Cloverly Fm. A big thanks to @StevenJD for letting go of this one – much appreciated! Note the asymmetry in the placement of the carinae, best noticeable from the top view. #2 Representing the Judith River Fm., a cornerstone of my collection, a 1st left premaxillary tooth of Dromaeosaurus albertensis. I just love the way the mesial carina ‘folds’ onto the lingual surface. #3 Another premaxillary tooth from the Judith River Fm., a Zapsalis abradens with prominent ridges. The mesial carina has a nice twist, the cross section looks rather symmetrical, so likely not a 1st or 2nd premax. Distal denticles are hooked towards the tooth tip, but no mesial denticles are present and the tooth is not recurved. So, for now it is labeled as cf. Zapsalis abradens after Currie and Evans 2019, but could eventually be re-labeled as Saurornitholestes langstoni.

Hi All, I'm new to this forum and thought I'd send over images of my theropod teeth plus one extremely impressive sauropod from Madagascar. Hope you like them! Paul

Hello, I would like to know if this tooth may possibly be from Yangchuanosaurus species. It is from the Shaximiao Formation, Zigong, Sichuan Province, China Formation is Jurassic age and relatively very little material is known from this formation and particularly in China although seems like Yangchuanosaurus has been described from this location et al. (1978) named Yangchuanosaurus shangyouensis on the basis of CV 00215, a complete skull and skeleton which was collected from the Shangshaximiao Formation, near Yongchuan, Yongchuan District, Sichuan. Tooth measures less than 2 inches and the serrations appears too worn to make an ideal identification, although looking at teeth from skulls of Yangchuanosaurus, they do seem very similar , in shape and size Any help would be appreciated! Thanks!

Hello, i saw this Megalosaurid tooth from the Isalo iiib form., Madagascar for sale today. Is there something wrong about it ? It seems to look like If some sort of crust has formed around it, or is it plaster, fill mass ? Let me know what you think about it, before me or someone else buys it.

Hello! I got these stuff from Kem Kem. Any help with id? - Maxillar theropod? - Turtle claw? - Theropod indet? - Theropod indet? Thank you so much!!!!

Hello all! Here I am with yet another question the same as all the other ones I ask. “What is this fossil tooth?” I found it online. I believe it to be a theropod, but can anyone officially identify it? It was found in Hell Creek, if that helps. If I can find out in the next 3 days that would be great, as that is when it is going.

By combining several analytical methods, including machine learning, to assess the diversity of a collection of theropod teeth from the Kem Kem beds, researchers found a tooth that could possibly be assigned to Deltadromeus agilis. https://www.tandfonline.com/doi/full/10.1080/02724634.2024.2311791 https://www.uu.nl/en/news/higher-carnivorous-dinosaur-biodiversity-of-famous-kem-kem-beds-morocco

Found this tooth in my Aguja Formation micro matrix. It's about 6mm in length. I know it's in really rough shape, and I actually broke it in half attempting to get pictures of the distal/mesial sides. Can anyone give me an idea of what it may be? Could it be a theropod tooth? I don't see any evidence of serrations on either side. Sorry if the pictures are not the best. It was extremely difficult to take pictures, especially after it broke in half. Base of tooth Distal Mesial

Hi! This is a 19MM rooted theropod tooth from the KemKem group. Sold as an Abelisaurus. But would it be possible to be a Baby rooted Carcharodontosaurus tooth? Not sure.

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?

Got a new box of mixed KemKem material the other day; plenty of Spino, Carch, small theropod, croc, fish, and other usual suspects, but I can't put a name to this one. I'm fairly sure it's theropod, but since there is so little info available, it's hard to say which one. Anyone recognize this little fella? It's 32mm long by 21.5mm at the widest point; the grid squares are 1"/25.4mm. I can take additional pix if needed. Thanks!

Hi All, I found this tooth sifting in one of the Cretaceous brooks in Monmouth Co., NJ. during a trip around November last year I wasn't sure what it was at first (initially thought talon possibly from something more recent), however after showing photos to a few local folk more familiar/knowledgeable with the fossils in this area (Thanks @frankh8147!), the consensus was, it's a very compressed Mosasaur tooth. Makes sense as Mosasaur teeth can be found here on occasion, and this tooth has several common features. However, I've had a couple individuals suggest theropod tooth when I initially shared it in a couple groups back in November. This was based on the compression of the root. I'm still leaning towards Mosasaur, but recently a different person brought up the theropod theory, so I thought why not throw it up here for opinion. Multiple photos, some redundant (have done a couple "photo shoots" with this one lol). If photos of any specific area would be beneficial, please let me know. Thanks in advance for your feedback/opinions! Truly appreciate the help.

Hello guys, I have a question: what are the rarest theropods in the Elrhaz formation? And what are the rarest herbivore fossils from the Elrhaz formation? I want to expand my collection whith some teeth from there. If somebody knows, let me know.

Hello, i have a question : are herbivore fossils rarer than theropod fossils? Because i saw many theropod fossils, but nearly no herbivore fossils on the fossil markets, which makes me wonder .

Last year when things weren’t so complicated with COVID, we managed to have hunt for dinosaur footprints on the Yorkshire coast. Here’s the beach looking across to Scarborough in the distance. Here are some examples of the prints we came across: Nothing fantastic but all theropods. Heres one in a block that was carry-able: I finally got around to cutting the block to size today although it was freezing outside. So here you go, Theropod Footprint, circa 5 inches long. Middle Jurassic Bathonian (168-166 million years) Scalby Formation Long Nab Member Yorkshire Coast Nr Scarborough Thanks for looking

This is a fun project that I have been working on for the past few months. Fossilized dinosaur teeth from the Kem Kem beds in Morocco showcase a wide variety of colours and patterns, caused by the varying conditions under which they were fossilized. To me, these colours and patterns are rather beautiful. Therefore I decided to ask a colleague of mine, who is a professional photographer, to take pictures of my small collection of teeth, so I could use these pictures to create collages of the original owners of the teeth. Using this approach, I made images of theropods from five different families. The animals on the images inhabited what is now known as Morocco about 100 million years ago. Here they are. The white bar next to the teeth represents 1 cm. This one I based on the species Spinosaurus aegyptiacus. This one is based on Rugops primus. I was inspired by the patterns of the Gila monster. Based on Deltadromeus agilis, which might be a noasaurid. As no skull of this dinosaur has ever been found, I am not sure that these are actually teeth of Deltadromeus. The other side of the smaller tooth shows an interesting white pattern, caused by plant roots growing on the fossil. Based on Carcharodontosaurus saharicus. I am not certain that these teeth are dromaeosaurid, but they do have characteristics that indicate that they might be. I love the pattern on the smaller tooth, which made it pretty easy for me to create a feathered look. I went ahead and got cards printed with the collages on the front. On the back I have included the family names and the specific teeth I used for each collage, at full size! It was a fun and refreshing experience to try a completely different approach to making illustrations.

Hi all, I recently bought this partial theropod tooth form the Lourinha Formation (Portugal). Height ~1.1 cm. The distal serration density is 8-8.5/5 mm, the mesial serration density is 7.5-9/5 mm. Crown ornamentations are present and I think also interdenticular sulci. I looked at an old post of Troodon (see below). Are there any other known theropods from this location, besides Torvosaurus, that have a crown serration density < 9/5mm? Any thoughts?

Howdy all, Anyone willing to trade me an Appalachiosaurus, or any black creek theropod tooth? Been dying to get one.

Hello, Anyone have any thoughts on this I am interested in? A small theropod tooth from Brook Bay, Isle of Wight. 0.43cm so it is a tiny tooth. Small, just visible serrations. Oval base. Wondering if someone can narrow the type down. cheers

Hi, Was wondering what this could be. It is 19cm and I suspect it could possibly be from a theropod, but it might instead be something else. Thanks!

Theropod toe bone found in the Hell Creek formation Montana. Any ideas what kind of raptor this is from?

Found in the Horse Shoe Canyon formation (Alberta) with several bones including theropod teeth. It has the right shape and size to be a claw. Any ideas? About 1 inch long

Hey all, I got this a while back, but it was too covered in matrix to do any solid ID'ing--until today! Appreciate any ID info/opinions you have. From the Cloverly formation, Montana CH: 12.6mm CBL: 6.8mm CBW: 3.3mm Mesial serration density: about 6/mm Distal serration density: about 3.6/mm Transverse undulations I'm not sure about interdenticular sulci, but I think that box is checked too Prayer