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Showing results for tags 'theropod'.
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From the album: Aguja Formation
Finally, a theropod! It's just a fragment, however.-
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possible E. dinops tooth
AJ the Tyrant posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hey! I’m thinking about buying this possible Eocarcharia dinops tooth. I want to make sure that it is completely authentic and correctly identified. It does say it is from the Elrhaz formation in Gadoufaoua, Niger, but I just want confirmation (if possible because identifying theropods from Niger can be quite difficult) that this indeed an E. dinops tooth.
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Possible Lourinha Portugal Marshosaurus-like Megalosaurid Tooth
Kikokuryu posted a topic in Fossil ID
I recently purchased a Theropoda indet. tooth from the Lourinhã Formation of Lourinhã, Portugal. I wasn't expecting much initially since it looked like an incomplete tooth and the seller tends to go the safe route with their IDs if it's too vague. But, the serration count was similar to that of the Marshosaurus-like megalosaurid teeth based on @Troodon's guide on the dinosaurs of Portugal. Maybe it's just wishful thinking, but I wanted to see if anyone else had some input before I slap that good old theropoda indet. label on the display. The distal serrations is split down the middle. Mesial serrations were kind of hard to count, but they are at least 20/5mm, the distal serrations are 16/5mm. Not sure if the split serrations are messing with the count, but it should be around that 16/5mm after counting it multiple times with various pictures. I don't know how much further the tooth would have gone had it been complete, but I think the mesial serrations do appear to end before reaching the base. Although I don't know if those serration densities still overlap with other theropods like Allosaurus. Split distal serrations and shape of the base which could be slightly off due to the split serration. Distal serrations. Mesial serrations. Mesial serrations ending? Close up on denticle shape on distal side.
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Here is the description of a new welsh theropod Pendraig milnerae. Found in the 1950s in the same fissures as pantydraco, the “new discovery” is a type of coelophysidae and it had laid undiscovered in the drawers of The Natural History Museum in London. https://royalsocietypublishing.org/doi/10.1098/rsos.210915 We are on a roll with Welsh dinosaurs: Megalosaurus (Zanclodon) cambriensis Pantydraco cauducus Dracoraptor hanigani Pendraig milnerae And not forgetting the Triassic mammal Morganucodon watsoni
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This is a vertebra I won as part of an online giveaway. I was told that it’s a Spinosaurus vertebra, but I doubt that vertebrae centra are identifiable down to genus level like that. Still, thought I’d post it here in case anyone can narrow it down for me so I can get a more accurate ID. (I will add that although it is difficult to see in the images, both the posterior and anterior ends of the centrum are concave). Thanks!
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Hi Guys ! today i need some help in ID this Theropod tooth i bought for quite sometime ago . labeled as dromaeosaur tooth locality : Harding country , SD , hell creek formation USA But after closer examine the tooth i found that this tooth was quite robust and quite thick oval shape in cross section view and have twist in mesial carinae . so i personally think that this tooth might be juvie Tyrannosaur instead of dromaeosaur tooth . What do you guys think on this one ?? Regard Guns
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'Kem Kem Vertebra Process': What Type of Dinosaur - if it's Authentic?
JamieC7696 posted a topic in Fossil ID
Dear Forum, I bought the following 'fossil' - labelled 'Kem Kem Vertebra Process'. I was wondering whether anyone could identify for me to what type of dinosaur it once belonged (i.e. sauropod, theropod... the more detailed the better!)? Best Regards Jamie
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Here is a tooth I acquired recently acquired. It was mixed in with a bunch of the usual kem kem stuff, gar scales, sawfish barbs, small damaged spino and croc teeth ect. This tooth stood out so I got it and wonder if anyone has any clues? The mesial serrations are smaller than the distal side and they stop about a quarter of the way up the tooth. About 13mm long base is 8 mm from distal to medial and 5 to 6 mm from lingual to labial end.
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I purchased these as Ingenia yanshini which I think became Ajancingenia, which then became and is currently Heyuannia. The formation provided is the Djadochta Formation, but that doesn't seem right since Ingenia/Heyuannia is not found there as far as I've checked. Unfortunately, there isn't provenance other than Mongolia attached to them to say whether they come from the Barun Goyot Formation where Heyuannia yanshini is found. While I'm not necessarily doubting the original ID, I just don't really know. I'm not expecting a positive or diagnostic ID to the genus level, but I wanted to at least know whether or not I can label this to Oviraptoridae indet., possibly Heyuanniinae indet. The original ID is a bit of an odd one, but it might have just been one of the few oviraptorids described at the time. Last I checked, there are now tons of recently described oviraptorid genera in Mongolia and China. The pair of phalanges with supposedly the semilunate carpal attached which I think is the smaller section? I know one of them did have glue in-between them when I lightly smeared it with acetone using a cotton swab. They are associated coming from the same sandstone block, apparently along with other shattered phalanges. Although I don't know if these actually came from the same animal since one looks ever so slightly larger. There is some sort of clump of sand or crystalized piece attached, as well as light beige or cream colored matrix. Not sure if that narrows down a formation, probably not, but I do see a lot of matrix from Mongolia tend to be red-ish color similar to the Kem Kem Beds. Any input is appreciated. There's probably a lesson to be learned here . . .
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Moroccan theropod dinosaur tooth and other fossil ID help
fossil_lover_2277 posted a topic in Fossil ID
Hi all! Soooo I just recently made a trip to my local mall, and the upscale mineral/fossil shop there had a bowl of assorted cheap Moroccan fossils for sale. As far as I could tell they were of Cretaceous marine origin, most of them being goblin shark and Cretolamna teeth. However there were a few interesting finds, including a small theropod dinosaur tooth!!! You bet I paid my $0.50 for that sucker =p Also, I found some sort of jaw bone, an unknown shark tooth (pathological?), and a possible fish skull cap maybe? I’m going to post them to the Fossil ID page for some help, I don’t know my Moroccan fossils lol
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Is this theropod claw/toe real?
Rahul posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi all -- Found this claw for sale and am really interested in buying it. Seller acknowledges that exact species of theropod cannot be determined but that the fossil is from a good source in Kazakhstan. There do appear to be theropods from the region. Any obvious signs in these pictures that this is a fabrication? Just at a glance, it looks like the grain does follow the curve, which is the first thing I'd look for. Anything else that stands out? Relatedly, any signs that this is a composite toe (with bones from several individual dinosaurs put into one display)? The latter does not bother me too much but would be good to know up front. Thanks much in advance!
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Hi y'all, I picked up this gorgeous Dromaeosaurid tooth. It was listed as Acheroraptor and I bought it thinking it was one. However, upon receiving it and taking some measurements, I believe it may be a candidate for Dakotaraptor steini, as it virtually matches one in @Troodon's collection in every metric. It has a semi-oval base, with no ridges or facets commonly seen on Acheroraptor. The mesial carina is straight, and terminates almost 1/3 the CH from the base. Dromaeosauridae Hell Creek Fm., Carter Co., MT, USA CH: ~ 10.5 mm CBL: ~ 6 mm CBW: 3 mm Mesial denticle density: 8 / mm Distal denticle density: 4.5 / mm Distal serrations: Mesial serrations: Base: This is the other tooth I'm referring to:
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Hello everyone, (I'm new to this forum so please forgive me if I'm missing something important). I've recentenly saw a theropod tooth listed for sale. This tooth was described as being found in the Bathonian section of the El Mers group, and is described as an Megalosaurid. I've tried to read upon some information, but i've come to notice that there is very little avaliable. I saw a post on this forum saying that theropod teeth from El Mers are still under debate, and that teeth from the Bathonian section require the gypsum matrix to be present in order to identify it as being Bathonian. I was wondering if this fossil fits the profile of being from the Bathonian section and could be a Megalosaursid, or i this is almost impossible to tell. The pictures of the tooth are not quite as clear as I would like, but i hope it will suffice. Thanks in Advance. Details of this tooth: Size: 2x3 x5,5 cm from Morocco El Mers group, Bathionian/ Callovian
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Really beefed up my collection this year: Amber: Spent a while with my trusty loupe combing through Chiapas amber sold by the gram and found a very uncommon flower petal. The seller took a moment to offer up a page on his phone about the healing properties of amber, and he gave me a polite nod and laugh when I said I'm more interested in the scientific properties. I like dead stuff. Big Claw: Always wanted a thick beefy claw! Labeled as a Carch claw from Kem Kem but after reading some of @Troodon's posts it could be a Spino or generic theropod. Really love the shape of this thing. Crab: Unfortunately about 20% of the crab's lil' butt was crushed sometime between purchasing and driving home. He's so delicate. There's a nice interior view of the underside of the carapace now, though. Any info about this guy would be appreciated! Skinny Theropod Claw: A little rough around the edges but I was really drawn to the curvature and sharpness of this one. Labeled as just "theropod" so I'm not sure if it's possible to tell what it's from. I can post more photos for identification.
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On the third day of our Hell Creek trip in Baker, Montana I stumbled upon a small theropod claw with identical blood grooves running down either side of it. Noel and I looked around for references but found no conclusive match for what it could be. It is 1.3 cm long, roughly .3 cm in width. @PaleoNoel
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Hi everyone, I have here an indeterminate theropod tooth from from the Tiouraren Fm of Niger. The locality given to me was Tiouraren Hill, Téneré Desert. I've used Troodon's thread to narrow down the possibilities: 1.23" long 0.49" wide Distal serration density is 2.33/mm (mid-carina) Mesial serration density is 2.33/mm (near the tip; no serrations visible mid-carina) It's a partial tooth so I cannot get accurate base/height ratios. I'd appreciate any help identifying this. Thank you, Bellamy
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I am just driving back from a fantastic 5 day collecting trip in Southeastern Montana. I had the opportunity to collect on a private ranch that had not been heavily hunted for several years. Our group made quite a few interesting finds. I am hoping that someone on the forum might be able to assist in identifying this unusual bone. It is definitely theropod and based on the size, likely tyrannosaur. It appears to be a portion of the skull but I am having trouble matching it up. I apologize for the lousy pictures in advance. The bone measures approximately 5-6 inches.
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Hello, thoughts on this? It is described as theropod. From the El Mers Group. Boulmane Province Jurassic. 1.25 inches. Seller says the tip might be repaired. Now, is it as described--location wise? Apparently there is a Kem-Kem related Cretaceous deposit also in the Atlas Mountains, so some teeth described as Jurassic actually aren't? So, is this a Jurassic one, and can anyone possibly narrow it down to a more specific species? Also, any signs of fakeness or restoration? there is a fair bit of matrix on, which I know is a red flag with Kem Kem fossils. But is it the same with El Mers? Thanks for the help
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Hi! I've been eyeing these supposed Abelisaurid teeth from Morocco (Kem Kem beds?), but I'm unsure if they are what they're labelled as. Are these two Abelisaur teeth? Or are do they belong to another theropod in the formation? (Mostly being confused with how one differentiates KK "raptor" teeth from true abelisaur teeth) Tooth A: Images 1 to 4 Tooth B: Images 5 to 8 I've read @Troodon's fantastic guide to Kem Kem teeth. However, as a very amateur fossil collector, I'm only able to identify but the only feature I am able to identify as abelisaurid is the mesial side being curved, and the distal side being straight (especially clear on Tooth A). Link to Troodon's guide: Tooth A Tooth B
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Thanks for taking the time to check this out. The vert is ID'ed as Dromaeosaurus from Hell Creek Fm, Powder River County. I've been having a frustrating time trying to make better sense of this, since, as for as I know, there have been no Dromaeosaurus IDs in HC. Are any of you able to shed light on the likelihood of it being dromaeosaurid and anything beyond that? The measurements are 1.875" long * 1" wide * 1.625" tall. (I have a vert centrum ID'ed as Dromaeosaurus from a Judith River Fm and it's only about 0.8" * 0.4*0.5. Position may well explain the huge size difference, but I'm not sure about that either.) Any input you have would be greatly appreciated.
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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. -
My husband purchased this landscaping rock in a pallet from a Bath/Bethlehem, PA area supplier about 20 years ago. Most of the supplier’s stones are from Pennsylvania. I’m guessing this is sandstone??? I’ve been staring at this rock for sometime and before I place it back, I wanted to get some opinions if anyone sees any type of tracks on this rock? I feel like my fingers fit in the specimen very nicely. Can’t tell if I’m seeing 3, 4 or 5 “toes” ? Maybe I’m just an imaginative newbie. Thanking anyone in advance who looks at these photos.
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Hello, I surface collected these two associated and sequential toe bones from the Horseshoe Canyon formation, but can't quite get a definitive ID on them. After a bit of research they appear to correspond most closely with Albertosaurus, but I hope to get a second or third opinion before I label them. I know that theropod toe bones can be tricky, but I'm hoping that the claw has some diagnostic features. Thanks! Bone 1: Bone 2:
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Hi, I am interested in this tooth, and wondering if someone can narrow it down further. It is theropod tooth, from Weston County, Wyoming, Lance Formation. Waiting to hear back from seller on exact measurement, but included a photo of it near a tape measure. Thanks
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This is my first attempt at getting a Dromeosaurus albertensis tooth from Judith River fm. I've largely been avoiding buying dromeosaurids like the plague that aren't Acheroraptor or Saurornitholestes. Provenance: Hill County, Montana The tooth is repaired, and I had to realigned it while restabilizing it with butvar. The tooth doesn't seem to perfectly fit together, or too much butvar ended up in-between. There does not appear to be any serrations on the mesial edge, and it doesn't appear to have any trace of serrations, at least not that I can see with a macroscope. I don't think it's Saurornitholestes sp. due to the serrations not having the distinct hooked shape. I'm not 100% sure whether or not it's Tyrannosauridae indet., but I don't think it is, but the robust dromeosaurids are supposedly very similar at first glances. Any help or clues is appreciated. If any pictures are insufficient, I can try and take better photographs.
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