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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 was looking at one of my troodontid teeth (Albertavenator curriei) and noticed some very interesting wear facets. I decided to look at some of my favorite teeth and/or the ones with the strangest wear facet and check out all their wear facets. I wanted to share them with the community. You can clearly see scratches of where the tooth entered the flesh, especially on the first one. Here's the first tooth, it looks blacker in person, the photo makes it look brown. Here's another troodontid tooth, there are marks on the wear facet, it is just harder to make out and this tooth was a challenge to photograph. I made this diagram years ago, all the others I made today. There are at least 2 prominent scratches. This diagram shows the puncture and pull method of most theropod dinosaurs. Puncture-and-Pull Biomechanics in the Teeth of Predatory Coelurosaurian Dinosaurs. Hope you all enjoyed, I will not be able to reply for next 4-5 days, as I am going south to Victoria to see the world's most complete Triceratops and Victoria the Tyrannosaurus on display at a museum, I will probably make a post about that when I can. Kind Regards, Kohler Palaeontology

Hey everybody, it's been a while! I wanted to ask you all your opinions on this strange bone I found in North Texas a few weeks ago. I was hunting at a creek that cuts through the Eagle Ford - Austin Chalk contact and produces shark teeth and oysters identical to Post Oak Creek in Sherman. This bone was found in gravel in the creek bed downstream of the contact zone so there's unfortunately not much I can do to narrow down what formation or member it may have actually come from (although the preservation does seem to have more in common with bones from the chalk). The bone is heavily eroded and at least half is missing with the inner cavity having been infilled with matrix that still protrudes and suggests what the original shape/length of the bone might have been. One articular facet is well-preserved. My first thought was that this would have to be some sort of marine reptile phalanx but after doing some research I could find nothing that looked similar: the articular surface of this bone is concave and squared off with right angles on each edge whereas the same surface on mosasaur, turtle, and plesiosaur phalanges is circular and flat. I met up with @Jared C a week later for a fossil hunt in Austin and he passed along pictures of the mystery bone to Prof. Polcyn at SMU who agreed that it does not look like it came from a marine reptile and actually believes it may be dinosaur. Up until that point I hadn't even considered dinosaur as an option. Obviously finding any dinosaur material in Texas (outside of the Big Bend area) is extraordinarily rare and my find would be even rarer as it originated in marine sediments deposited during the late Turonian to Coniacian , a time when almost nothing is known of North American dinosaurs from the eastern half of the continent. I compared the phalanx to different dinosaur phalanges and I feel like if it is in fact dinosaur than I can rule out anything quadrupedal like hadrosaurs or nodosaurs as it isn't bulky enough and the infilled matrix indicates a very hollow interior. Right now my best guess is ornithomimid or theropod but I am very open to being proven wrong if I'm way off the mark here. In particular, the groove in the center of the articular facet is throwing me for a loop; on all the bipedal dinosaur phalanges I've seen, both manual and pedal, there is a ridge instead of a groove in that exact spot on the facet. Any help on an ID is greatly appreciated! If anyone reading this knows of any dinosaur experts here on the forum, feel free to tag/link them down below so they can take a look. @hadrosauridae@ThePhysicist

Here are a couple of dinosaur teeth (tyrannosauroid and hadrosaurid) from Bladen County, North Carolina.

Hello everybody, I was just scrolling through an auction site and stumbled across this specimen. It's price is way out of reach, but it caught my attention. Obviously it is no Archeopteryx as the seller claims. Not much info about it's origins. Middle Jurassic, China taken with a pinch of salt... To me the bones seem pretty decent and real but some things are (perhaps) a bit off. For some kind of Paraves the arms seem to be pretty small / short and the skull looks kind of...unnatural? Perhaps a composite or even fabricated parts? There are many more pictures, but I did not want to upload them all. IF this should be a completely genuine specimen imho it should be in a museum's collection and being studied! Proportions could point out to some kind of Troodontid. At first glimpse I was fascinated but the more I look into detail the more I think it could be not what it seems to be. Too good to be true so to say. What do you think? Could it be real and if, what kind of theropod do you think we see here.

Hello, I wanted to share a find from my last trip into the Alberta badlands near Drumheller. I believe it to be an Albertosaurus print(s?), and the local museum will send a technician to confirm. I haven't found any records of tracks found in this area, at least that still seem to be in layer. The shelf I found this on painted quite a picture. About 2 meters away were a grouping of crustacean(I think) burrow ichnofossils. This makes me believe the area was likely an intertidal zone and I pictured the albertosaurus walking through the area at low tide. Sometimes it's fun to picture the scene as it could have been.

We found our first ever theropod claw the other day, which is one of the best finds this year! It is only the tip of a claw, but we are super happy with it! Because only the tip of the claw is there, we are having trouble identifying which theropod the claw belongs to. It is rather thin and doesn’t have a flat bottom, so we ruled out the possibility of it being an ornithomimid foot claw. My son asked around, and has gotten mixed opinions from everyone he asked. I figured making an id post should be helpful, so please let us know what you think the claw might be!

I just found this very well priced “Theropod Claw” that seems a bit too good to be true. I have never got involved with claws so I thought it would be best to check with the forum. If it is correct I will then put it through the fossil Id. (Note: I have a little under 2 days to bid so if you can respond soon, that’d be great.)

Hi, I bought this for [price redacted]. It was labeled as a theropod femur but through research and showing it to others I think it might be crocodile. I'm not sure so if anyone of you has any thoughts about this piece feel free to tell me. Its 97 myo btw.

I think this might be just a natural formation of limestone and other minerals, a friend mentioned this forum said they'd give me better insight on the rock at hand. I leave it to everyone here with the expertise. Thank you in advance 😁

Of all of my fossils this is the one i'm most sceptical about. I bought this as a bone but compared to other specimens I have it is not the spongy texture very often seen on bones. It was labeled as t rex so it is from the Hell creek FM. It does smell as a fossil tho.. Any help will be appriciated.

Hello everyone,I got a maxilla with 2 teeth from Liaoning,China. According to the location the seller provided (凌源市lingyuan ), it should be 大王杖子层,义县组 (Yixian Fm). I am not sure what theropod it is, but I guess it may be Compsognathidae or Dromaeosauridae dinosaur. No serration was found in the mesial side.The largest tooth is 7mm long.

Hello, I wanted to ask if someone could help me identify the fossil shown in the attached photos? I've been told that it might be a juvenile tyrannosaur or nanotyrannus, but since I'm new to theropod claws wanted to ask the community. Any help would be really appreciated 🙏

So I found someone online on Instagram selling dozens of dinosaur theropod claws from Niger that seem dissimilar to what they look like on for example of a reputed seller (last 2 pictures). I cant find any claw that looks similar to what he is selling. All results on Google images look like the above link. He says it is because the claws he is selling are heavily mineralized. It is also the first time I see someone selling around 30+ claws in one go, that stuff is supposed to be very rare.. he had many more not on the above pictures. I suspect these claws to be -at least some of them - carved out of rocks. Or atleast, modified. perhaps casts? I dont know much from Niger, or if these are dinosaur or reptilian. Could someone tell me if my hunch of it being fake is wrong or right? ruler is in centimeters not in inches

Hi, Since several years the amateur paleontologist Luc Ebbo has discovered new dinosaurs and marine reptiles in southeastern France. The specimens (all undescribed) have been found in marine deposits of various ages from the Lower Cretaceous. Marines reptiles are represented by small and several large relatively complete ichthyosaurs from the Aptian and Albian of the Blue Marls Formation. Among dinosaurs the last discovery is ‘’Ernest’’, a late juvenile or subadult theropod 70% complete (including 90% of the skull found disarticulated in the middle of the articulated postcranial skeleton) from the Valanginian of the Hautes-Alpes department. Other dinosaurs are represented by a nodosaur known by four skeletons found in several sites (I do not know their precise geological ages but I believe they come from levels more recent than Ernest). Only one skeleton from the Alpes-de-Haute-Provence department was prepared, 70% complete (the skull is missing) and includes almost complete armor. Some remains of abelisaurians (this region had already yielded the fragmentary remains of the abelisaurid Genusaurus from the Albian) and a titanosaur skull (for which there is not much information at the moment) were also found by Luc. Below is a video from a YouTuber on Luc’s discoveries. It is mainly in French (English subtitles are available) but there are also several passages in English with the speakers Christian Foth (who will study Ernest), Attila Ősi (who will study the nodosaur), Peter Larson and David Martill. In the video the small theropod is long called by Luc the little t-rex (even though of course Luc knows very well that it is not the t-rex species). The study of the specimen will clarify whether it is a Tyrannosauroidea or an Allosauroidea. The video also addresses the issue of private collections and the impossibility of currently publishing all of these specimens. All these fossils are located at Luc's private museum in Salignac (Paléogalerie) but all of them are available to researchers. Luc and his team, who want these fossils to remain in the region where they were found, and professional paleontologists are looking for a way to make all these specimens publishable. Ps. the video contains a post-credits scene about the discovery in the same area of a giant pterosaur humerus (more than 60 cm in length), possibly the largest known pterosaur. https://www.youtube.com/watch?v=JW8MRI3iNJE ‘’Ernest’’ : The nodosaur from Salignac : Albian ichthyosaur from Alpes-de-Haute-Provence department : Late Aptian ichthyosaur from Drôme department :

Recently, I got a tooth from Liaoning, Yixian Formation but I have poor knowledge about this tooth. Could you please help and share your opinions. There are many famous dinosaurs such as Yutyrannus, Anchiornis and so on. This tooth is really tiny and about 8mm.

Same spot in SE Pa in bucks county. From the overlaying deposit. Yeah obviously it’s very small. Before someone says well that doesn’t look like a fossil. Of course it doesn’t I did not remove this from rock. That doesn’t mean it’s not a fossil. Last I checked fossilization is dynamic. Its an illium, ischium, and pubic boot is what I am saying.

All items in photographs were found in Amarillo Texas, though I highly doubt it is the origin of these items..telluride ore and stibnite ore were acquired at same time..which would lead me to assume that these were found either in Colorado or Canada which would be the Morrison or the Hell Creek formation..I can attach pictures of the oars at a later time but thought these bones were more important first..I only uploaded a few of the associated lots and bones that I have..I assume the entire collection to be about 2000 to 2200 pieces.. I plan on keeping all these fossils.. I'd like to know the names of some of these just so I can tell people what they are when I show them off..I can upload several more pictures upon request..please contact me..thank you

Hi, Another question about a foot claw from the Kem Kem Beds. This is a weird looking claw that may or may not be theropod. It is quite robust and is 7cm in length, though i am having trouble telling which angles of the claw the photos come from. It does look like the underside has a couple of circular depression spots which could indicate theropod, though i am not confident and wanted to ask for opinions whether theropod is the likely candidate. Thanks.

I'd like to share with everyone my most cherished and aspirational collection item: a Zhuchengtyrannus tooth from Campanian stage of the Late Cretaceous of Shandong Province, China. Hope everyone would like it! Thanks sooo much to my friends during this journey!

Howdy all, This here is a section of theropod bone from Uzbekistan. The seller has labeled it as Timurlengia euotica and I'm curious if that's accurate of if it's from another theropod. Size: 5.6 cm

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.

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?