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  1. So, I have been doing more research on thelodont morphology, and I have a few questions regarding the branchial structure, and was hoping for some other people's understanding on this subject. Regarding the branchial structure, what is the most current research? I have read that the species Pezopallichthys ritchiei, Cometicercus talimaaae, Drepanolepis maersae, Sphenonectris turnerae, Turinia pagei, Furcacauda heintzae, and Furcacauda fredholmae, have shown themselves to be among the best preserved articulated thelodonts, with pretty well preserved branchial bars and openings. The
  2. 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
  3. a slight caveat: the piece is from 2005 supplementary(and included): reasonably large character/taxon matrix Paleobiology, 31(3), 2005, pp. 400–423 Integrating ichnofossil and body fossil records to estimate locomotor posture and spatiotemporal distribution of early sauropod dinosaurs: a stratocladistic approach Jeffrey A. Wilson wilsondinosaurop{ichnolstratocladisphenet+.pdf
  4. doushantuo

    the young ones

    Pimpaounionidlarvontogenicedulcaquital2012.pdf Amer. Malac. Bull. 30(1): 73–84 (2012) 73 Comparative morphometry and morphology of glochidial shells of Amazonian Hyriidae (Mollusca: Bivalvia: Unionida) Daniel Mansur Pimpão, Maria Cristina Dreher Mansur, Paulo Eduardo Aydos Bergonci, and Colin Robert Beasley
  5. Hi I decided to make a quick guide on how to ID Tyrannosaur teeth from the Belly River Group of Alberta, and the Judith River, Two Medicine Formations. I got this information on a study on how to ID isolated Tyrannosaur teeth from Dr. Angelica Torices. I’ll start off on saying Albertosaurus and Gorgosaurus are extremely alike not much differences in the morphology Daspletosaurus is a little bit Different, the morphology of these two Tyrannosaurs (Gorgosaurus and Daspletosaurus) are probably do to similar evolutionary history Gorgosaurus could of been Albertosaurus ancestor. Now I’ll tell you h
  6. 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
  7. doushantuo

    hadrosaurid,2.0

    morphological_innovation_and_the_evolution_of_hadrosaurid_dinosaurs.pdf Morphological innovation and the evolution of hadrosaurid dinosaurs Thomas L. Stubbs , Michael J. Benton, Armin Elsler , and Albert Prieto-Márquez Paleobiology, 45(2), 2019, pp. 347–362 DOI: 10.1017/pab.2019.9 Given the source publication,the emphasis is perhaps not where you'd expect it to be Those who grimace at cladistics might not want to read this RECOMMENDED! rating:
  8. here Sana KHEMIRI Sana, François J.Meunier , Michel LAURIN,Louise ZYLBERBERG Morphology and structure of the scales in the Gadiformes (Actinopterygii: Teleostei: Paracanthopterygii) and a comparison to the elasmoid scales of other Teleostei Cah. Biol. Mar. (2001) 42 : 345 - 362 DOI: 10.21411/CBM.A.FBAB4704 about 22 Mb CONTAINS cladograms (no pictorial outtakes possible,BTW,alas) When reputable vertebrate histologists get together,this is what you get
  9. 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?)
  10. 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
  11. doushantuo

    apologies if repost:Phacopidae

    Cr-nier-2013-Palaeontology.pdf MORPHOLOGICAL DISPARITY AND DEVELOPMENTAL PATTERNING: CONTRIBUTIONOF PHACOPID TRILOBITES Catherine Cronier Palaeontology,56/6,2013 edit: probably NOT a repost,unless someone grossly misspelled ""disparity"
  12. 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
  13. doushantuo

    old beetles record

    this being: Whirling in the late Permian: ancestral Gyrinidae show early radiation of beetles before Permian-Triassic mass extinction Evgeny V. Yan,1,2 Rolf G. Beutel,1 and John F. Lawrence3 BMC Evol Biol. 2018; 18: 33. Published online 2018 Mar 16. doi: 10.1186/s12862-018-1139-8 1,63 MB yanbeutelcoleopterentomollagersts12869-8.pdf
  14. doushantuo

    Suckers!

    2010_Fuchsel_belemollupoolidsuckers.pdf o,5 mb or less,and INNERESTIN!!!!!!
  15. doushantuo

    IOW UK dino

    Kats Looking forward to the dental microwear analysis already
  16. Sagebrush Steve

    Need help with trilobite morphology

    I'm starting to sort through the trilobites I found at Oak Springs and need some help. My degree is in electrical engineering, which means when I was in college I never had to take any of those pesky courses in biology, zoology, etc. But that puts me at a disadvantage now as I read through the descriptions of the candidate trilobites and try to make sense of them. There are a fair number of papers published on the trilobites of the Cambrian in California and Nevada. To help identify what I have collected I'm using this one: Carrara Formation. Here is where I am having difficulty. The des
  17. I liked it,but that's no guarantee you will schileyshiley.pdf I've included some illustrated taxa in the tags. It's write-protected so I can't post any outtakes
  18. doushantuo

    gastropods do have a price

    unreservedly recommended by me Pricecolumelgastrop(BUSYCON)functmorphconchbiomineralizBull.pdf
  19. doushantuo

    Apex?Que?

    When three guys with that kind of reputation in echinodermology get together to write a paper,you just KNOW it's going to be good. Highly recommended,particularly if you love your Loven,Mortensen,Raff,etc. Extremely well illustrated,IMHO Saucepourtpical 04 me.pdf
  20. doushantuo

    Members of the Green Party

    A pretty useful capsule review of leaf shapes in ferns. Recommended?You betcha. vascofernleaveslaminbotanyreviewnfpls-04-00345.pdf outtake:
  21. If anybody has read any Shubin,Clack,Coates,etc:this is indispensable,IMHO dioja37592.pdf wonderful coloured diagrams in this one,this is one of them
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