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Showing results for tags 'theropod'.
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Hi folks! Received a new theropod indet. tooth today from the ever exciting Kem Kem. I was tentatively leaning towards a Carcharodontosaurid indet i.d., in line with morph type 3 in the always handy guide from @Troodon, but a few properties of the tooth have me wanting to get some extra opinions. Measurements: Crown Height: 27mm Crown Base Length: 10mm Cross Section: 7mm Mesial serrations: 5/mm (midline) Distal serrations: 3/mm (area just above damage at midline) There is a neat repair at the tip, a bit of damage to the enamel near the apex on the anterior and around midline on the posterior. There is also a shallow chip out of the enamel near the cervix (can be seen in the cross-sectional pic). The tooth is quite noticeably recurved (moreso than most teeth I've seen with a similar morph type). There is a labially displaced distal carina, in-keeping with Carch features, but chisel shaped denticles are present; something I have personally not seen on any teeth if this kind in the past. Lingual Side Labial Side Mesial Face (The mesial carina is lingually displaced and reaches approx ⅔ way down the mesial face. Denticles are very subtle and annoying to count.) Distal Face Cross Section Mesial Denticles Distal Denticles Comp w/ Carch indet. anterior tooth Denticles from the same position near the apex: Thanks in advance for any input.
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I recently purchased Niger fossils, and as expected, provenance was poor. I know it's ill-advised to buy fossils without good provenance, but I decided to take a gamble here. There was a sliver of hope in getting provenance as the seller could contact their source in Niger, but alas, outside Agadez is the best they got. The first fossil was sold as possible Kryptops, and 2nd just Theropod. I also got fish fossils from the same group. Elrhaz, Irhazer II, and Tiouraren appear to be the 3 formations in that region, and most fossils from Niger you often see for sale are supposedly from one of the 3. Not 100% sure if there are other formations to consider in the Agadez area. I know the white-ish fossils are typically the fossils attributed to the Tiouraren fm., but I don't think the darker or even solid black colored fossils are necessarily excluded. If Theropoda indet. is the best ID, that's fine. They're also not complete which is already bad in of itself. 9/10 times fossils from Niger have poor provenance, or none at all, so it's just on par for course. Tooth A - I think the denticle shape and density is wrong, and it might to be too big to be Kryptops. Distal Serration: 11/5mm Mesial Serration: 11/5mm Tooth B - Serrations appear to be worn under a scope. Distal Serration: 10/5mm Towards Tip - 11/5mm Towards Base Mesial Serration: 10-11/5mm Fish - Not really expecting ID from fish chunks. But maybe something about them might give away age . . . probably not. The group of specimens here are stuff I didn't buy, but belong to the same group. I saved pictures of all of them to possibly narrow down a formation or locale, though I'm assuming the diggers in Niger just pile up all their findings into one pot regardless of where they dug them up similar to the stuff from the Atlas Mountains in Morocco. I think the sauropods suggest Jurassic, but again, everything could have been piled up in one lot.
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Hi, Any thoughts on the ID of this? It is labelled as a theropod toe bone from Kem Kem. 5cm x 4. The preservation seems odd to me. Most toe bones sold from Kem Kem seem to be that distinctive yellowish orange color. Is the theropod ID right, or is croc/reptile? Thanks for the help
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Hi all, thanks to @Troodon and his wonderful guidance I felt confident to purchase my first fossil claw. Now after thorough cleaning and proper documentation I wanted to get your input on a possible ID. The claw was found in the Hell Creek Fm., Garfield County, Montana. It's 1,82 cm (0.72'') in length and as you can see some of the tip is missing. The ventral surface is a bit flat so I guess it's not a Dromaeosaurid, but it also does not look like Anzu to me, but I am a claw-novice. Thanks for taking a look!
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Hi guys I picked up this tooth recently from Morroco. It’s approximately 6cm long (Just a little short) The tooth is said to come from the High atlas region in morroco, Talsint, Figuig province. The Ksar metlili formation (140-152 MYA) making the tooth Upper Jurassic - Lower Cretaceous. On mesial side 10 serrations per 5mm and distal 9 serrations per 5mm. Base of tooth is slightly damaged but looks ovalish. Some wear to top of tooth. I know some of these teeth actually come from the Dekker formation and could possibly be synonymous with the Kem Kem beds - so could the tooth be a carcharadontosaurus? compared to my other two carch teeth from the classic beds the tooth looks different nt as do the serrations look a little different under high magnification original seller listed it as theropod indet. But said he had done some research and thought it to be similar to Allosaurids (I’m not too sure but I’m not as Familair with these new morrocan teeth) many thanks, GK
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Hi, just want to share with you one of my specimens and would like some opinion with regards to the potential ID of this theropod indet. tooth from the Yixian Formation in Liaoning province. As I have little familiarity with Chinese theropods and don't see a whole lot of real specimens reference pics available unlike their Moroccan or USA counterparts. Any input or insight from experts or experienced collector would be greatly appreciated. Here is the tooth in question and it's details that I gathered: The tooth measures about 1.5" measured straight with some visible restorations on the specimen This is the cross-section of the tooth taken from the base: This is the up-close visual of the distal serration: The serration extends down to the base with a serration count of approximately 3 serrations per mm. This is the visual of the mesial serration side: The serration extends down to only about 1/3 of tooth and the serration count is also approximately 3 serrations per mm Please let me know your thought and appreciate all opinions, thank you in advance!
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Any restoration work on this Spinosaur foot claw?
msantix posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi, A while back I asked about the identification of this theropod foot claw, but it is still for sale and I am thinking of buying it. I wanted to ask now, if anyone can see any sort of repair work done on this claw (such as with the tip of the claw?), the seller says there is no restoration and I can't see any repair work on it, but I am never too confident with dinosaur claws. Thanks. -
Hi all, I could not resist and took another shot on my quest to obtain a Dakotaraptor tooth. Here the tooth in question this time: It was found in the Hell Creek Formation, Garfield County. Measurements are: CH 1,41 cm - CBL 0,68 cm - CBW 0,3 cm - denticles per 5mm are 22 mesial and 19 distal. Note the slight tilt of the denticles towards the tip of the tooth. It's the best fit I have found so far, what deviates from the dePalma description is the shape of the base, it has a pinch, but I would not consider it rectangular. As a side note, it looks exactly like the base of Acheroraptor teeth I have in my collection. But, I am not an expert Thanks for taking a look!
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Hello All I haven't the foggiest idea what species this tooth i saw on an online site is. @Troodon can you or someone else id this tooth for me? All I know is it Is 1 1/2 " long i don't have a location for this nice carnivore tooth. Thanks in Advance!
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Hello Sorry, I'm rewriting this message in English. Considering the effectiveness of the responses to yesterday's post, I am submitting another one to you. Also found in the continental interlayer of the Kem kem plateau in Morocco. Bone density seems to be attributable more to a dinosaur than to a crocodilian ... A bone in a joint (carpus?). Does the shape of this bone inspire anyone? Thank you in advance for your answers.
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Here is a lovely isolated theropod tooth from USA - the seller lacked all locality data, although he believed it may have been from the Morrisons formation. This lovely tooth is just over 2.5cm long and has 15 serrations per 5mm on the distal side (DC) however serrations on the mid-centre off the medial side have not been preserved. It would be lovely to ID this to some level other than theropod if possible. Serrations on the mesial side only go down 2/3rds of the tooth. There is some restoration to the tooth - if any more photos would be beneficial please let me know and I’ll try and grab some. megalosauid? Allosaurid? Tyrannosaurid?
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Just bought these little beauties. Were sold as 'dromaeosauridae sp.' finger bones. Ad also named them deltadromeus. Now, I'm aware of the difficulties with ID'ing Kem Kem theropod but I like buying cheap-ish fossils and then trying to figure out what they really are. Part of the fun I guess. Total length of both bones is ~63mm. Not sure if the arrangement is correct, bones seem to fit well. They're small, which makes me wonder if they're theropod at all. Did look into deltadromeus, found the gualicho shinyae which might be the best reference point it seems. Bones do look like some of the gualicho material, but more like the feet and not hands. Then again: you'd expect bigger bones for dinosaur, unless these are juvenile I guess. There are some minor repairs on the smaller bone. Nothing too crazy. So I'm hoping you guys can help out, as always! Am I looking at (juvenile?) theropod bones with a likeliness of being deltadromeus (as advertised) or at something completely else?
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Hi everyone, I have a theropod teeth that I need help identifying. This tooth first came from a reseller from Morocco in 2019 (before Talsint teeth flooded the market). He promises this came from a Boulmane digger, and calls it a Jurassic tooth. Irregardless of whether this is a Jurassic tooth or not, the reseller is reliable when it comes to locality I have tried identifying this tooth but all my best guess is that it's a Megalosauridae indet. Here are its info: CH: 26.1 mm CBL: 13.7 mm CBW: 8 mm Distal denticle count: 13/5mm on mid line Mesial denticle count: 17.5/5mm on mid line Unique trait 1: Well visible transverse undulations Unique trait 2: Mesial carina ends well above the cervix. Even accounting for the worn tip, it's half the length of the distal carina Unique trait 3: Distal denticles significantly larger than mesial ones (DSDI > 1.2) I read "The distribution of dental features in non-avian theropod dinosaurs: Taxonomic potential, degree of homoplasy, and major evolutionary trends" but I am still unable to confidently assign a theropod family to this tooth. The lack of locality data from Boulmane further hurts the ID. Here are some of the relevant pages I highlighted from the paper: Regarding denticle size: Regarding the mesial carina terminating above the cervix: Regarding the transverse undulations: A compilation of features about my tooth and the potential IDs for it: If you have any insight regarding my tooth, I would love to hear it. Thank you
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Hi, anyone able to help with this? It's sold as Theropod, from Abingdon. 10.5 x 8 x5 cm. Unfortunately it's very weathered and has been squashed and distorted during fossilization, so it seems difficult to ID. Personally, I think it's been misidentified. At 5 cm, it seems much too thin. Secondly, I'm looking at some drawings of theropod and megalosaur verts and they seem to bend inwards a lot in the middle (not sure of the actual term for it) with large centrums and going narrow in the middle. But if someone else can take a second look, just to confirm I'm right, that would be great. Thanks for the help
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Hi. A second vert I like. From Abingdon, theropod. 6 x 5.9 x 5. Many thanks for the help
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I have here a theropod tooth from I-n-Abanghaghit, Niger. It was labeled as Rugops. However, I was suspicious after obtaining it. I consulted with someone who deals in Niger material, who noted that this locality is Jurassic and thus it could not be Rugops. I read Troodon's thread on identifying Niger theropods. Per that guide and other sources, it seems that the only option would be Afrovenator based on that locality (I think I-n-Abanghaghit is synonymous with Agadez but not completely sure on that). This tooth is 0.85" long. Distal serrations count is 10.2 / 5 mm. Mesial serrations are far too worn to count, I can only see traces of them. Because this appears to be a partial, I don't think posting base/height ratios would be useful. Based on that information, can an identification be confirmed? Thank you, Bellamy
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Spinosaurus Restorations
BellamyBlake posted a topic in Is It Real? How to Recognize Fossil Fabrications
I have here a Spinosaurus tooth, 4" in length. It has the repair close to the base. I'd love to know if anyone can spot restorations. I don't see any. Thank you, Bellamy
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This past summer's trip to Wyoming provided no shortage of interesting and bizarre finds. This tooth was found at a channel deposit in the Lance fm. and is about 5 mm in length and 2 mm in width. It appears to be a theropod tooth based on the overall morphology, but lacks serrations unlike the all the non avian theropods in the formation. I'm not sure if the serrations were worn off or were never there in the first place. Or perhaps based on the small size it belonged to a young individual with developing teeth. The theropod it most closely resembles in my opinion is Richardoestesia, as it's only slightly curved and the base is similar to examples of that genus in my collection. I'd appreciate any input you may have.
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I have here a theropod tooth tip from the Morrison Formation of Moffat County, Colorado. It's 1/2". The claim is that it's Torvosaurus based on the serrations. Is that a definitive way to identify this as Torvosaurus as opposed to another theropod? @Troodon Thank you, Bellamy
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I found these two vertebrae together in the Dinosaur Park Formation of Alberta. I’m wondering what they might be? I’m suspecting rather Champsosaur, turtle, or juvenile theropod. Any insight into the identity of these two elements would be great, thanks! @Troodon
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- champsosaur
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I have here Carcharodontosaurus teeth from two sellers. No restorations are declared. However, I'm suspicious of both and would appreciate more opinions on them. Here's the first one, I believe the tip is restored. It's 3.78"
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Hi everyone, Notice: im italian, so understand my errors So this is a dinosaur bone that, after one year of studying it, i never understand the species or the family of it. I buy it in Italy like two years ago, and in the old Times i was sure it cames from a Theropod Vertebrae from Morocco, Kem Kem Beds (like the seller said). After 5 months of studying, i have contacted Cristiano Dal Sasso ( the one who have discovered the first dinosaur of Italy and other ones) and he said that i it was probably a toe bone from an ornitischian one. After studying, it’s technically impossible to be an Ornitischian and for three reasons: 1. In Kem Kem nobody have never found an Ornitischian dinosaur before, so if i am the first person to found this specimen, technically i have a new species of erbivore of Kem Kem 2. The Brownish color of the bone isn’t a characteristic of the Kem Kem beds, the Kem Kem ones are very red, and they have a rusty texture on it. This brownish color remembers me the Hell Creek ones 3. It’s a toe bone, and not like Cristiano dal Sasso said, this toe bone is not similar to a toe piece of an herbivore/hadrosaur, is very small and very short to all the erbivores we know (6,4 cm in length, 4,9 cm wide and 5,1 in height) So now i will give you the bone,i will apprecciate everyone opinion, Thank you, TheItalianPaleo
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Another small Hell Creek bone found in North Dakota, this time it appears to be a the end of a limb from what I believe may be a bird, small non-avian theropod or perhaps even pterosaur. It has very thin walls which is what made me think that way and I would appreciate any input from my fellow members. The bone is about 1 cm in length and 6 mm at it's widest point at the bulbous base.
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I found this tiny, slender bone at a Hell Creek microsite during my trip to the Dakotas in 2019 with PaleoProspectors. I'm not sure what it came from, but I'm hoping it's theropod, avian or otherwise. It's missing a section of the outer layer of bone and I believe the interior is hollow & filled in with the ironstone common in the formation. The dimensions are 1.7 cm in length and about 3 mm in width. I would appreciate any feedback you may have. In situ shot from the site: The closeup shots did not come out exactly how I wanted them lighting and detail wise. If you would like me to retake them or get different angles I'll happily do so.
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Hi everyone, tonight I want to share with you one of my favorite finds from the summer, this absolutely tiny theropod tooth I found looking through anthill matrix in Wyoming's Lance formation. It's currently the smallest theropod tooth in my collection and it's always an interesting contrast when compared to my largest personally found tooth (a Tyrannosaurid from Judith River). It's about 3 mm in length and a bit over 1.5 mm in width. I believe the serrations have been worn off as they are incredibly faint in some areas and absent in others. I'm not sure if the way the light gleans off the enamel indicates that it would be any particular species, whether it looks more like the result of the pinched base typical of Nanotyrannus teeth or would count as ridges as seen in Acheroraptor. I would like to know the opinions of my fellow members on it's potential identity and the likelihood of it being from a young juvenile/infant/prenatal individual. Shot in hand from the field: Shots at home: @Troodon @jpc @Runner64 @Jaimin013 @hxmendoza
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- dromaeosaur
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