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Found 500 results

  1. Psittacosaurus Prep

    Here’s the prep thread for the juvenile Psittacosaurus that was discussed in the “Is It Real” section. This is very real although relatively poorly prepared originally. There’s a significant fracture running the length of the matrix just below the plane of the specimen. There are parts that are filled with some rather degraded glue, probably old epoxy. I’m glad I got this when I did as the glue holding much of it together is severely degraded. Here’s the little guy as I received it. First order of business was to stabilize all exposed bones and cracks with PVA. Then I started removing matrix around the tail. This is after only 1 hour. Already a big improvement.
  2. Kem Kem vert process ID

    I obtained this bone a while back, but put it to one side, in the hope that I'd be able to identify it later. It's from Kem Kem and appears to be a process from a vert. In fact, I'm pretty certain it is, because a dealer online has listed this vert, which has a nearly identical process. I'm not so hot on dinosaur anatomy, but I have been looking at photos and diagrams to try and work it out. Would I be right in assuming that the vert above isn't Spinosaurus? I assume it must be dinosaur, because of the size. Thanks in advance.
  3. Need help with fossil ID

    My parents found this on their farm in southern Minnesota (Watonwan County), roughly 50 years ago. My parents--now in their 80s--are thinking about selling the farm, and passed the fossil on to me. I would be thrilled if anyone could help me figure out what it might actually be. I have tried to take clear pictures of each side. Any questions, feel free to let me know. Thanks in advance for your help!
  4. I traded this piece in this forum few months ago, and i heard this is spinosaurus's neural spine. After i received this I searching and trying to match this bones with spinosaurus's neural spine and sail bone. They looks pretty similar with this piece but not perfect matched. So, I can't sure what is this bone piece is.. I hope i can identify this clearly. Do you have any idea of this pieces? +I feel really embarrassing about i wrote 'Kam Kam' on title... now i edit that. I feel i need to more study again It's almost 30cm long. And here is more details. Thanks for your help.
  5. Recent acquisitions

    Some recent dinosaur tooth and fossil acquisitions. Stegosaurus stenops Late Jurassic Morrison Formation Bone Cabin Quarry West Albany County, WY Allosaurus fragilis Late Jurassic Morrison Formation Bone Cabin Quarry West Albany County, WY Deinonychus antirrhopus Early Cretaceous Cloverly Formation Southern Big Horn Basin. Big Horn county Montana USA Brachiosaurus altithorax Late Jurassic Morrison Formation Como Bluff Albany County, WY Tarbosaurus bataar Late Cretaceous Nemegt Formation Mongolia Triceratops sp. Late Cretaceous Hell Creek Formation Southeast Montana
  6. Can across this one recently on our favorite auction site, a torvosaurus tooth from colorado. Though with no intention of buying especially at the high price tag it is at I have my suspicions, the seller claims it its 100% no repairs or restoration. Looking at the pictures I highly doubt it as it looks extremely repaired to me and some of it especially in the picture zooming into the tip reminds me of the little air holes found in fake cast trilobite. Idk how much is repaired or even if the whole specimen is fake, I'd be interested to hear what you guys think. Definitely a gigantic red flag to me.
  7. Kem Kem chunkosaur ID

    These three bits came in the post today. They're a bit of a puzzle, and came without any definite ID. I wonder if anyone might have an idea what they are? I think at least two ought to be identifiable, but I've had no luck so far in trying to compare them to illustrations or photos of any dinosaur bones. Bone 1 No idea what this is, but hopefully the distinctive shape will make some sort of identification possible. It was tentatively described as a piece of pelvis. Here's a very quick and dirty photogrammetry 3D scan of this bone, which might help you to get a better idea of the shape. Bone 2 - This is huge and, as you can see, still needs some prep to reveal all of the surfaces. Finally, this very flat piece of bone, which I don't hold out much hope of an ID for! It's hollow, but that's about all I can tell you. @Troodon and @LordTrilobite - hope you don't mind me tagging you as two of the most knowledgeable people on this material. Any thoughts would be appreciated. Many thanks.
  8. Small dinosaur ID

    Subsequent to my earlier post of a "baby" dinosaur, I have finally obtained more photos of the other dinosaur specimen. This specimen is more complete and is also collected from the same locality at Ganzhou, Jiangxi of China. Any idea what species is that? The previous link to "baby dinosaur" is http://www.thefossilforum.com/index.php?/topic/80752-baby-dinosaur/&tab=comments#comment-851276
  9. Bones?

    These two pieces are said to be from the Morrison formation. Anyway way to ID them?
  10. Hi everyone! As I have mentioned several times, being a 3D artist I am trying to move into the field of paleoart. Recently I have started modeling Ceratosaurus nasicornis in 3D, and I really want to make it as accurate and plausible as possible. Here is what I have got so far: a basic model done in 3ds Max. After this I am planning to take it to ZBrush and add more muscle definition, sking wrinkles, scales and other fine details. At this stage this is just the base and I would like to share it with you guys in order to receive some feedback from those who know their dinosaur anatomy. Did I get the shape and overall structure right? Constructive criticism is more then welcome, pretty much this is what I am asking for here. 1. Mesh 2. Body 3. Perspective 4. Back 5. Top view 6. Head close-up
  11. Dinosaur Eggshell ( Saltasaurus ).

    From the album Vertebrates

    Dinosaur eggshell (Saltasaurus) from the Upper Cretaceous of Argentina.
  12. Some dinosaur fossil ID

    I have recently purchased several interesting dinosaur specimens. They haven't arrived yet, but I have the pictures. Any comments on the IDs I have would be very appreciated. 1. Tenontosaurus caudal vertebra with bite marks. These bite marks actually look like bite marks, but I am not sure. Maybe they are from something big, like Acrocanthosaurus, that is know from Cloverly fm? Is it actually an ornithopod vertebra?
  13. I want to show the first examples of tyrannosauridae teeth in my collection. They are on their way to me, so now I can show only seller's pics. First come a tyrannosauridae tooth from Bissekty formation (Timurlengia euotica) it's size - 7 cm
  14. I got this 15 or 20 years ago, and have always been fascinated with it. Over the years, I've read different things that say "if you have a fossil dinosaur that looks like it laid down and died in a perfect position, then it's not real." So now I find The Fossil Forum, and it looks like there are folks here who know about these things, and who might be able to help me figure out the mystery. Any opinions? I really appreciate your help, thank you in advance!
  15. regally adorned ceratopsian

    recommended about 4,5 MB peer-reviewed,and fairly recent Possible convergent morphological and behavioural evolution with Centrosaurines previously(not all,but most relevant): http://www.thefossilforum.com/index.php?/topic/54993-a-new-species-discovered-regaliceratops-peterhewsi/&do=findComment&comment=587417
  16. Allosaurus tooth

    From the album Dinosaurs fossils

    Allosaurus tooth Morrison Formation
  17. Deinonychus tooth

    From the album Dinosaurs fossils

    Deinonychus tooth Cloverly Formation
  18. Abelisaurid 2

    From the album Dinosaurs and Reptiles

  19. Kem Kem Vertebrae ID Thread

    So, lets figure out vertebrae from the Kem Kem beds. As many of you know the Kem Kem beds has a pretty enigmatic palaeo fauna. There is some literature about it, but not a whole lot. Some of it is behind a paywall and much information is pretty scattered. So I got this idea that maybe we could combine our knowledge and information to collectively get a better picture of which bone belongs to which animal, in this case, vertebrae. I know some of you have some fantastic specimens in your collections, if we combine these in this thread we might be able to see some patterns. We probably won't be able to put a genus or species name on each type, but perhaps assigning certain vertebrae to a morphotype might be possible. With that I encourage everyone that has any vertebrae from the Kem Kem beds to share photos of their specimens and post them here so we can use this thread as a sort of library as well as an ID thread that everyone can use to better ID their Kem Kem vertebrae. So please, share your photos! And it might help to number your specimens for easier reference. I will be updating this first post as new information arises with examples to make ID easier. Theropods Spinosaurus aegyptiacus Spinosaurus is known for it's tall neural spines, which are pretty characteristic. Unlike Sigilmassasaurus, Spinosaurus does not have the ventral triangular rough plateau on the centra Spinosaurus cervical vertebrae Spinosaurus dorsal, sacral and caudal vertebrae Sigilmassasaurus brevicollis Sigilmassasaurus is a Spinosaurid that might be closely related to Baryonyx and Suchomimus. It differs from Spinosaurus in that it has a ventral keel on many vertebrae and a triangular rough plateau on the bottom back end. A is Sigilmassasaurus, B is Baryonyx Sigilmassasaurus cervical vertebrae Sigilmassasaurus dorsal vertebrae Indeterminate Spinosaurid vertebrae Not a whole lot has been published yet, so some bones can probably not be ID'd on genus level. Spinosaurid caudal vertebrae From Paleoworld-101's collection Charcharodontosaurids Due to an old paper Sigilmassasaurus vertebrae are sometimes misidentified as Carcharodontosaurid. These vertebrae should be identified on the basis of the original description by Stromer. Carcharodontosaurid cervical vertebrae Abelisaurids Abelisaurid dorsal vertebrae From Troodon's collection Deltadromeus agilis better examples needed Sauropods Rebbachisaurus garasbae Not a whole lot is known about this titanosaur, as only a few bones have been found. Notice that the vertebrae are very extensively pneumaticised. Rebbachisaurus dorsal vertebrae Unnamed Titanosaurian mid caudal vertebra Crocodiles more examples needed Kemkemia This crocodile is only known by a single terminal caudal vertebra. Kemkemia caudal vertebra Turtles examples needed Pterosaurs Azhdarchids Azhdarchid (probably Alanqa) posterior fragment cervical vertebra Azhdarchid Mid cervical vertebra Sources Spinosaurids https://peerj.com/articles/1323/?utm_source=TrendMD&utm_campaign=PeerJ_TrendMD_1&utm_medium=TrendMD http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0144695 Sauropods Jeffrey A. Wilson & Ronan Allain (2015) Osteology of Rebbachisaurus garasbae Lavocat, 1954, a diplodocoid (Dinosauria, Sauropoda) from the early Late Cretaceous–aged Kem Kem beds of southeastern Morocco, Journal of Vertebrate Paleontology, 35:4, e1000701, DOI: 10.1080/02724634.2014.1000701 https://www.researchgate.net/publication/304214496_Evidence_of_a_derived_titanosaurian_Dinosauria_Sauropoda_in_the_Kem_Kem_beds_of_Morocco_with_comments_on_sauropod_paleoecology_in_the_Cretaceous_of_Africa Kemkemia sisn.pagepress.org/index.php/nhs/article/viewFile/nhs.2012.119/32 Pterosaurs https://docs.google.com/viewer?url=http%3A%2F%2Fwww.thefossilforum.com%2Fapplications%2Fcore%2Finterface%2Ffile%2Fattachment.php%3Fid%3D432009&fname=journal.pone.0010875.PDF&pdf=true https://riviste.unimi.it/index.php/RIPS/article/view/5967
  20. Carcharodontosaurid

    From the album Dinosaurs and Reptiles

  21. track tectonics

    graversichnolmilanJOGfulltext (2).pdf climate,diagenesis,rheology,aetiology. Knowledge of at least some common Structural-geological terms with regards to faulting and folding is necessary to totally understand this. Recommended,with the reservation that not every ichnite on this planet is preserved in eolianite(arenite("sandstone)" lithologies
  22. What made this footprint?

    Hi! My friend went to a museum and sent me a picture of this fossilized footprint. He said that they don't know what it is from. Does anyone have an idea?
  23. Hello. Good afternoon to all of my favorite forum! Please, these two claws of Dinosaurs. Are they real? Any likely candidates? Claw Nº 01 : ===================================== ===================================== Claw Nº 02 : @Troodon @LordTrilobite
  24. oklahoma confused

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