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Found 134 results

  1. Starting as a shark tooth collector a long time ago, last year I became interested in dinosaur fossils and decided to start collecting them. Despite dinosaur material, especially from rare locations, being usually very expensive for a college student, over this year I managed to get some interesting specimens through numerous trades, sales and purchases, some of which I want to organize in this topic. So, let's begin with Early Cretaceous (Aptian-Albian). All of my material from this time comes from Cloverly formation in Montana and Wyoming. Tenontosaurus tilleti - a large basal ornithopod, I have tooth and a vertebra with ?bite marks And a rare Nodosaurid tooth - Sauropelta is the only one described, although there could potentially be more than one species Cenomanian stage (early Late Cretaceous) is not that well represented in North American dinosaur fossil record, I have a hadrosaur and dromaeosaurid teeth from Woodbine formation, Texas A very significant portion of dinosaur fossils from North America comes from Campanian deposits of various stages. Let's begin with Judith river formation in Montana. Got some nice theropods - Tyrannosauridae indet. (potentially present Daspletosaurus and Gorgosaurus cannot be differentiated based on teeth) on the left and Saurornitholestes sp. on the right. And a nice Ceratopsian tooth (again, cannot be identified to the genus level, too many of them present) There is another formation in Montana of a similar age - Two Medicine formation. Recently got some nice material from there I can show here. First, a maxillary tooth from a hadrosaur Gryposaurus latidens - easily identifiable by the presence of denticles near the crown apex. Unidentified hadrosaur tooth with a complete root
  2. Spirifer subaequalis?

    @Tidgy's Dad, I have this one as Spirifer subaequalis. Location and stratigraphic info in tags. Pedicle valve: ~14 plications in sinus at margin. >20 on either side of sinus at margin (some not preserved). Thoughts?
  3. White river: How hard?

    Hello all I don't have much prep experience, and since I have very bad eyes I have trouble with microscopes to prepare fossils. I would like to learn how to work with my airscribe tought. So I want to prep fairly large fossils I can do without microscope. I have some stuff from France and Belgium I found myself, but or these don't need prep, or I don't dare to because I don't want to destroy my rare self-found fossils. So I came across the fairly common white river stuff. I found a website where I can buy unprepped oreodont bones and skulls. But what do you to prep these? Are they possible for total newbies when it comes to prepping? Is the matrix fairly loose or is it very stiky? I have an air scribe but don't know how to use glue. I've tried trilobites before but those are too tiny. I'm looking forward to your advise.
  4. Douglas, Wyoming

    LINK edit( 4,1 MB) Evidence for a large Paleozoic Impact Crater Strewn Field in the Rocky Mountains Thomas Kenkmann, Kent A. Sundell & Douglas Cook NATURE SCIENTIFIC REPORTS | (2018) 8:13246 together with (possibly!!) Bedout (Australia) and the Malvinas (see the post by Oxytropidoceras*) that would make three records for the late Paleozoic * Is the Falkland Islands Basin an Enormous Impact Structure ?
  5. Tyrannosaurid Tooth ID

    Howdy, folks! So just thought I'd pop a thread up for a partial tooth in my collection. It was originally sold as "unknown - possible croc tooth" when I purchased it. I tried getting an ID on it a couple of years ago, but the lighting in the photos made serrations hard to see, and it was tough to distinguish small details.... So here's attempt #2 (with better pics)! Any confirmation of ID mucho appreciated. Locality: Hell Creek, USA (afraid exact location is unknown) Mesial view?: Distal view?: Cross section: Closer look at denticles:
  6. microbial Utah

    Microbial deposits in the aftermath of the end-Permian mass extinction: A diverging case from the Mineral Mountains(Utah, USA) EMMANUELLE VENNIN, NICOLAS OLIVIER, ARNAUD BRAYARD, IVAN BOUR, CHRISTOPHE THOMAZO, GILLES ESCARGUEL, EMMANUEL FARA, KEVIN G. BYLUND, JAMES F. JENKS, DANIEL A. STEPHEN and RICHARD HOFMANN Sedimentology (2015)62, 753–792 NB 170 MB One more P/Tr article with "aftermath" Any more and I'll have conniptions And now for the serious part:this is seriously good. ..really Yes it's large,in both memory space and number of pages,but the subject merits exhaustive treatment. 11 out of ten for this one Mathematically impossible,you say? Hah!
  7. I’m just an outdoorsman that picks up things when I think they’re neat or different looking. That being said, I found this thing several years ago, wondered over it a while, and then stuck it in a box. Saw it again tonight and got to doing a little research on what it might be and the closest match I came up with was a dinosaur tooth. So I’m asking if that is indeed what it is, or if it’s just a very toothy looking rock of some sort? Either way, I think it’s pretty interesting and would appreciate any best guesses or insight as to what it is. I found it in a wash, maybe 10-15 feet below the surrounding terrain. As best I can remember it was just laying there with some other rocks, a shard of native pottery, and some rusty thing I never identified. This is in upstate South Carolina, Abbeville County, USA. If any further info would help I would be glad to provide it. Just not sure what is needed, even after reading several of the “before you post” threads. But here goes...
  8. TaylMcKinn Cretaceous Bryozoa from the Campanian and Maastrichtian of the Atlantic and Gulf Coastal Plains, United States Paul D. Taylor & Frank K. McKinney Scripta Geologica, 132: 1-346, 141 pls, 5 figs, 2 tables, Leiden SIZE:about 10,5 Mb Nice to see a species named after Brood!!
  9. Triassic cephalopoda

    GUE SPATHIAN (LOWER TRIASSIC) AMMONOIDS FROM WESTERN USA (IDAHO, CALIFORNIA, UTAH AND NEVADA) Jean Guex Alexandre Hungerbühler James F. Jenks Luis O’Dogherty Viorel Atudorei David G. Taylor Hugo Bucher Annachiara Bartolini Mémoire de Géologie (Lausanne), n°49, 2010 about 16 MB the contributing authors are dyed-in-the-wool experts on the Triassic @andreas
  10. The Republic of Washington

    PALEOALLIUM BILLGENSELI GEN. ET SP. NOV.: FOSSIL MONOCOT REMAINS FROM THE LATEST EARLY EOCENE REPUBLIC FLORA, NORTHEASTERN WASHINGTON STATE, USA Kathleen B. Pigg,1,* Finley A. Bryan,† and Melanie L. DeVore‡ Int. J. Plant Sci. 179(6):477–486. 2018. Pigg-Bryan-DeVore-lagerstUSAcenozoi2018-Paleoallium.pdf IMHO a nice marriage of paleontology and neontology,and pretty well illustrated,too RECOMMENDED
  11. Pamunkey stratigraphy and Mollusca

    WARD Lauck W.Ward Stratigraphy and Characteristic Mollusca of the Pamunkey Group(Lower Tertiary) and the Old Church Formation of the Chesapeake Group,Virginia Coastal Plain United States Geological Survey Professional paper 1346 About 25 MB As such things go:detailed!!!
  12. Ordovician taphonomy, Iowa

    maquordovicusavanitphosphjt049-web.pdf Heyo Van Iten, Michael Lichtenwalter, Juliana de Moraes Leme,Marcello Guimarães Simões * “Possible Taphonomic Bias in the Preservation of Phosphatic Macroinvertebrates in the Uppermost Maquoketa Formation (Upper Ordovician) of Northeastern Iowa (North-Central USA)” Journal of Taphonomy, vol.4, issue 4/2006 *all diacritics omitted
  13. Microgastropods of the USA

    p295-308GARVIE.pdf Microgastropod population changes from the early Cretaceous to the Recent in the Gulf Coastal Plain of the USA CHRISTOPHER L. GARVIE Zoosymposia(1),2008
  14. Campanian gastropods

    LINKdocker David T. Dockery III THE STREPTONEURAN GASTROPODS,EXCLUSIVE OF THE STENOGLOSSA, OF THE COFFEE SAND (CAMPANIAN) OF NORTHEASTERN MISSISSIPPI BULLETIN 129 MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY OFFICE OF GEOLOGY size:approx. 27 MB NB: dedicated to Norman F.Sohl(and containing biographical details)
  15. Montana, a shortish faunal review

    EASTON W.H.Easton: Carboniferous Faunas and Formation of Central Montana A study of the stratigraphic and ecologic associations and significance of fossils from the Big Snowy group of Mississippian and Pennsylvanian rocks Geological suvey Proferssional paper n.348/1962 Number of pages 157 PLATE two: stratidistribplate-2.pdf PLATE ONE(correlation/logs) plate-1.pdf to be used with some care with regard to (at least)the taxonomic aspects
  16. an Ordovician impact in the usa

    JGSL The Winneshiek biota: exceptionally well-preserved fossils in a Middle Ordovician impact crater Derek E.G. Briggs, Huaibao P. Liu, Robert M. McKay and Brian J. Witzke Journal of the Geological Society, 175, 865-874, 24 September 2018, https://doi.org/10.1144/jgs2018-101 Cannot recommend this one highly enough size:about 8,5 MB Note:the Ames impact straddles the Arbuckle/Simpson Boundary
  17. Do you think this item has any repairs and is it a genuine t-rex tooth? I t is 2 5/8 in lenght.
  18. I have this tiny shark tooth in my collection from America, but it kinda looks like a tiny, worn meg?
  19. decapodal delights

    Carrie Schweitzer Additions to the Tertiary Decapod fauna of the Pacific Northwest of North America Journal of Crustacean Biology,21(2),521-537/2001 jcb0521.pdf newly designated species are mentioned in the tags size:0,245 MB,approximately an outtake:
  20. bathyurus and Eomonorachus

    ontariomusbathyurtrilobitesbathyureomonorbiofacies00ludv.pdf about 2.1Mb Rolf Ludvigsen The Trilobites Bathyurus and Eomonorachus from the Middle Ordovician of Oklahoma and their biofacies significance Royal Ontario Museum Life Sciences Contributions 114 (1978) As far as I could ascertain,not posted previously.
  21. Hey guys, Hello I am from Germany. That's why I apologize for my bad English. This tooth (top right in the picture) I have recently screaked from the US. The tooth comes from the Hell Creek Formation (Wyoming). It was sold as a "Raptor" tooth. He is about 7mm (0,28") long. I´m not sure, to which dinosaur the tooth belongs, thats why I asked my question in this forum. I hope, that you can help me! Thank you in advance and kind regards!
  22. Stack&Sallan 35 Mb An examination of the Devonian fishes of Michigan Jack Stack and Lauren Sallan How to cite this article: Stack and Sallan (2018), An examination of the Devonian fishes of Michigan. PeerJ 6:e5636; DOI 10.7717/peerj.5636 contains: -Rockport Quarry species list -a nice bit on Protitanichthys NB :the remains are mostly disarticulated
  23. Acanthoceras Amphibolum

    From the album Bobby’s ammonites

    Nice
  24. Acanthoceras Amphibolum

    From the album Bobby’s ammonites

    Acanthoceras Amphibolum Upper Cretaceous Dakota Formation Sandoval Co, NM USA
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