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  1. hi i try to reconstruct a spinosaurus skeleton, i miss some bones of course, lot of bones ares in privates collection,and it s difficult to access them. my idea is : if you have in your collection some cervicals vertebrae or dorsals , the size is not a problem, i look for 3D models of them. i look also for the 3D models bones of the front limbs. thanks for help in this project.
  2. This is the most recent complete list of trilobites described with appendages. Six trilobites have a complete record of the antennae and post-antennal limbs. table from: Zeng, H., Zhao, F., Yin, Z., & Zhu, M. (2017) Appendages of an Early Cambrian Metadoxidid Trilobite from Yunnan, SW China Support Mandibulate Affinities of Trilobites and Artiopods. Geological Magazine, 154(6):1306-1328 PDF LINK
  3. Rexofspades

    Two Medicine Hadrosaur vertebra ID

    Hi! I got this Hadrosaur caudal vert from the two medicine formation. in Pondera County. I was wondering what part of the tail this bone would have come from? the seller says it is likely a proximal vertebra, but couldn't give any details on its placement. Is there any possible way you can tell what part of the tail this fossil belonged to? assuming a grown individual of the species. If exact placement isn't possible, Ill settle for general region. The centrum of the Vert is 2.7 x 2.3. x 2.2" and the process is 7.6" long in a straightline including the anterior points
  4. I've seen people collecting Megatherium claw cores on this site for a good while, but I never did get a good look at what a complete claw would look like (since judging by the fact that they're cores, there'd have to be more to those claws in life). What other components would make up the claws of animals like Megatherium, and what would a complete claw look like?
  5. Mahnmut

    Simosuchus ct anatomy

    Hello together, I am not entirely sure if the fossil ID section is the right place for this, but I am hoping for information on a fossil specimen, its not one I hold in hands, but a ct scan, and I think I may not post pictures because they are copyrighted. While looking for new inspirations for my model building I took a close look at this wonderful ct scan of a Simosuchus clarki skull. A pugnosed crocodile, how sweet is that? I wonder two things: -how is that bilateral bone called that in many crocodiles protrudes downwards from the skullbase reaching between the ma
  6. LabRatKing

    Sclerotic rings discussion

    So...I have some questions about sclerotic rings. In addition to supporting large eyes, resisting pressure, etc. how do they work? I ask as I see four basic forms across species, extant and extinct. the first is a fixed ring fused to the frontal and zygomatics. the second looks to be a fused or partially fused ring that is around the iris the third is a ring of small plates held together by connective tissue and the fourth looks like a camera iris Where my confusion arises is with the third and fourth and some birds and fo
  7. There are a lot of experienced dinosaur collectors out there but for the newbie I thought a topic on the anatomy of bones and teeth would be beneficial, in plain english. Avoids reading pdf's that are difficult to get through the technical terms. Orientation Skeleton The specific sketal structure of a dinosaur varies between theropod and herbivore but the major elements are typical. Skulls of dinosaurs are not comprised of a single bone but many elements See the osteology of a Trex skull on page 2 The holes in the skull are identified as
  8. Analysis of anatomical changes and Neck angle https://www.nature.com/articles/s41598-020-63439-0
  9. doushantuo

    Cyrtinopsis and Kozlowskiella

    PDF Th.F. Krans LEIDSE GEOLOGISCHE MEDEDELINGEN, Deel 47, Aflevering 1, pp. 99—113, 1-11-1971 The relation between the genera Cyrtinopsis Scupin, 1896 and Kozlowskiellina Boucot 1957 HIGHLY recommended,(no chauvinism involved,BTW) The underlined "from" is,in my opinion,a clear Dutchism,and probably should read "of" SIZE: 4,05MB
  10. Bail Chondroid bone in dinosaur embryos and nestlings (Ornithischia: Hadrosauridae): Insights into the growth of the skull and the evolution of skeletal tissues Alida M.Bailleul, Catherine Nyssen-Behets,Benoît Lengelé,Brian K.Hall,John R.Horner Comptes Rendus Palevol Volume 15, Issues 1–2, January 2016, Pages 49-64 about 8,1 MB recommended
  11. doushantuo

    trilobite anatomy

    here ACTA AD RES NATURAE ESTONICAE PERSCRÜTANDAS EDITA A SOCIETATE REBUS NATURAE INVESTIGANDIS IN ÜN1VERSITATE TARTUENSI CONST1TUTA I SER.: GEOLOGICA, CHEMICA ET PHYSICA VOL. XI, FASC. 1/2,1936 ÜBER DAS PANDERSCHE ORGAN BEI DEN ASAPHIDEN DES OSTBALTISCHEN ORDOVICIUMS VON p. siegfried,tartu about 94 MB "transliteration": On the Panderian Organ of East-Baltic Asaphids Sprache:Deutsch Langue:Allemand Language :German Starts from: PDF page 29 Some care with the taxonomy
  12. Hi I was wondering if anyone could help me identify some of the key anatomical features of the calyx of this crinoid (Apiocrinites elegans) and any anatomical features of this brachiopod (specimen unknown). I have trawled and searched but am having limited success so thought there might be a fair few people that would be able to lend a helping hand on here! cheers mark
  13. Hello evereybody, I dont know if this is the right place to post this but I would be interested to learn more about mosasaur skull three-dimensional anatomy. Do someone know where it is possible to buy accurate mosasaur's skull cast? I am looking for something more educational than decorative and ideally not too big. I know that there are plenty of interesting stuffs on the web but from my experience in human medecine nothing is as good as a three-dimentional model to understand complex anatomical structure like the skull. Thanks for helping!
  14. New detail of internal structure of trilobite eyes and implications of their location on the tree of life. https://www.nature.com/articles/s41467-019-10459-8
  15. Hi all, Need a little help identifying this bone from Bracklesham, UK. It measures about 1 inch long, should be Eocene age. Thanks in advance. Jay
  16. 7 ft tall Three toed tracks Walks flat on its feet, not on the sides of its feet Three fingered claw marks Osteoderms in skin Ancestor of cloepus, not bradypus Found in North America (do any known ground sloths have a smaller tail or even no tail at all?)
  17. doushantuo

    no uncertain terms

    Spixianaplacopbe033_0171-0194.pdf Illustrated summary of chiton terminology (Mollusca, Polyplacophora) Enrico Schwabe SPIXIANA 33 2 171–194 München, November 2010 ISSN 0341–8391
  18. doushantuo

    Borg!

    Folke Borg On the body wall of Bryozoa Journal of Cell Science/1926/s2-70 *TAKES a deep BOW* very little of this great bryozoologist can be found online. Which is disappointing,he said ,with a great feeling for understatement borgfolke{jcelsciontogeindispensabodywall1926bryozo1923(watersharmervigeliu)phylog.pdf recommended If anyone knows of any other accessible(non paywalled)online pieces by him,please tell me (edit NOT counting his piece on the recent dulcaquicole bryozoa of the Sahara*) *seemingly: Fredericella and Membranipora
  19. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0204007
  20. MeargleSchmeargl

    Mysterious stripes on Echies

    I've always wondered what the 5 radial stripes on echinoids we're and what they do. Any urchin/sand dollar experts know? Polished Echie with the "stripes".
  21. This was a really cool museum. I especially liked their selection of fish and marine reptiles. They also sported a largely complete tyrannosaurus skeleton, an Ammonite five feet tall and four feet wide, and a large completely intact mammoth. Pelagosaurus Typus A Mary Anning Icthyosaur (Two more were present) Plesiosaur Eryops A large fish (One of the Many on display) A perfectly preserved Crinoid The nicest ammonite (My opinion) Perfect spiral pattern And much more that we d
  22. These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at joegallo1954@gmail.com and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since April 26, 2018
  23. Found this channel on you tube when looking up ostrich anatomy and found the channel to be highly informative, hope its of some use to you good folk. https://www.youtube.com/channel/UCNkXywKzI3xvPt57OZwTRQw
  24. Hi all! Under the presumption these are echinoderm I've been searching for anatomical features, particularly disarticulated crinoid and archaeocidaris of which both are plentiful in the matrix. In my searching I've been unable to find anything that even remotely resembles these pieces. Any input is much appreciated. Plattsburg fm. - Hickory Creek sh. I attached a group photo of some of them I found, followed by 4 select specimens showing each side front and back. For scale, field of view is ~1cm. Group shot Front
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