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  1. David in Japan

    Shark cartilage?

    Dear TFF friends, It's been a while since I visited our fossil lovers community. I hope you're all doing well. Few months ago, I went to my favorite late cretaceous spot in Japan. Himenoura formation is a marine formation from the late Cretaceous (Santonian) where ammonites, bivalves, shark teeth, and crustaceans can be found. Last time I went there, I found the following fossil. In is quite small, and at first glance I thought it was some kind of bone fragment or small tooth's enamel negative but after observing it under microscope, I was able t
  2. JoetheJerseyGuy

    Tooth - Big Brook NJ

    Tooth found in Big Brook, NJ. Sheared down the middle so the back provides a cross section.
  3. Titan

    Titan's Preps

    Over the spring and early summer I got my prep lab set up and am having a blast with it so I wanted to start sharing some of my preps with the forum. Here we go! Fish vertebrae, possibly Xiphactinus: Late cretaceous. The larger of the two, in situ under a few inches of water. The smaller was about a foot away. Preprep: I tore them up getting them out of the matrix - bad collecting on my part as I could have been more careful. Post prep: I used baking soda as blast media at about 25 psi and had some trouble trying to clea
  4. Troodon

    Polar Dinosaurs - Alaska

    A new study reveals that nearly all types of dinosaurs that were present in the Arctic reproduced in the region, and remained there year-round. These dinosaurs encountered ~4 months of darkness per year, temperatures below zero, and snow https://www.cell.com/current-biology/fulltext/S0960-9822(21)00739-9?utm_source=EA
  5. Nothing new but this was presented at the SVP conference late in 2020 and could be of interest to some. Nothing has been published the and all based on one isolated humerus. Additional discoveries are most likely needed to demonstrate they were in that fauna. A POSSIBLE LAMBEOSAURINE (HADROSAURIDAE: DINOSAURIA) HUMERUS FROM THE LATE MAASTRICHTIAN HELL CREEK FORMATION OF SOUTH DAKOTA Rolleri, L., Gates, Terry A., Zanno, Lindsay E. North Carolina Museum of Natural Sciences, Raleigh, North Carolina, U.S.A. Both hadrosaurine and lambeosaurine hadrosaurs were common components of Camp
  6. Ernest

    Southern Alberta fossil I.D.

    Found this on an outcropping in southern Alberta with various other dinosaur fragments. Never seen this before not sure what it could be. Any suggestions would be appreciated
  7. Dakotaraptor steini was found in a multi-species bonebed in the Hell Creek Formation and lots of questions have been raised around this material since it was described. Elements of the holotype were found to belong to a turtle (furcula) and Anzu (Tibia) and questions raised on others. To make matters worst the holotype is not available for study.. So its been shrouded in controversy. A good review of where we currently stand is presented in the attached Twitter thread
  8. Hi all Some of you may remember that I used to (and still do) research on fossils from the Late Cretaceous chalk of Denmark... Now there are 2 main chalk sites in Denmark, Møns Klint and Stevns Klint. My work focuses on the stuff from Møns Klint, but in all honesty there's some spectacular fossils coming out of both localities. One thing that both Møns and Stevns have in common is that fossils of mosasaurs (giant lizard-like marine reptiles) are extremely rare, with only a small handful of specimens found every year. A few years ago, I went to the Geomuseum Faxe (south of Copenhage
  9. JoetheJerseyGuy

    Big Brook, NJ - Bones

    Beyond the shark teeth I acquired these two bones from a recent trip looking for fossils in Big Brook, NJ. Not sure how to differentiate if this is recent or from the Late Cretaceous associated with the others fossils found in the brook.
  10. When looking on a muddy day in the maryland late cretaceous marine site. Found a small 2 inches 5-6 cm long bone. all help will be appreciated. I am not sure what bone it is, let alone what species. Like most bone from this site the surface texture is in general rough.
  11. Excellent paper describing the osteology of the Mongolian ornithischian Haya griva Good reference document for other Hypsilophodontids https://Haya grivadigitallibrary.amnh.org/handle/2246/7253 Troodontid tooth found in matrix. Possibly enjoying dinner
  12. Edmontosaurus annectens may have been the largest dinosaur in the Hell Creek/Lance Formations not T rex. Here is an article that gets into the specifics. https://thesauropodomorphlair.wordpress.com/2021/02/10/size-of-the-duck-titans/
  13. There are two Tyrannosaurs described in the Hell Creek & Lance Formations, Tyrannosaurus rex and Nanotyrannus lancensis. Teeth from these animals are the number one sought after and coveted item by collectors. I don't understand all the hoopla and prices they command since my friends who I collect with know that I'm not a tooth person and prefer bones and claws. However I've been fortunate to find and acquire a few teeth and will post a several of my nicer ones. My two most favorite T-rex teeth are my biggest and smallest: The Baby (one of the rarest teeth around) is 1 1/8" and w
  14. I found this specimen along with some other fossils during a fossil hunt. This vertebra is very peculiar and unique, due to its small size, and it’s composition. It is completely permineralized by hematite, making it feel much heavier than the average rock. It almost feels like a chunk of metal. Probably belongs to one of the endemic hadrosaur species of the Cerro del Pueblo Formation, such as Velafrons coahuilensis, or Latirhinus uitstlani.
  15. For Pachycephalosaurid lovers this paper documents the morphology & ontogeny from +20 specimens of Sphaerotholus buchholtzae. It also evaluates the systematics to show that it's a distinct and valid genus in the Hell Creek Formation along with Pachycephalosaurus wyomingensis. https://academic.oup.com/zoolinnean/advance-article-abstract/doi/10.1093/zoolinnean/zlaa179/6125117
  16. I'm offering for trade about half a gallon of microfossil matrix collected from Post Oak Creek, Sherman, TX. It's rich in marine fossils from the Late Cretaceous Interior Seaway (Eagle Ford Group ~ 90 Ma). I cannot guarantee what you will find. I however can comment on what you can find based on my experience with this site. Sawfish oral teeth are very common. You may also find a variety of sharks' teeth, with about 8 genera that I've found so far in similar matrix (Squalicorax, Cretoxyrhina, Cretodus, Cretolamna, Ptychodus, Scapanorhynchus, Hybodus, Cantioscyllium, ...). Reptile teeth are unc
  17. A new small dromaeosaurid dinosaur, Shri devi, from the Late Cretaceous deposit of the Barun Goyot Formation at Khulsan, Mongolia, is described here. Pretty cool unfortunately no skull but teeth should be small and very similar to Velociraptor Paper provides a good reference source to ID dromaeosaurid bones from other regions http://digitallibrary.amnh.org/handle/2246/7251 Check out that Digit II killing claw
  18. RooBug

    Hell Creek Fossil ID Help

    Hello all, it's been a very long time and I'm posting from my phone in an area with no wifi, so I hope I've followed all the rules as best I can. I was out fossil hunting in the Upper Hell Creek in eastern Montana last year, and found this bone. (Sorry for the images, I will not be able to retake them for months.) It was found in a sandy mudstone and appears to be hollow (and very crumbly). Its about 10 inches long.My best guess is a Struthiomimus femur, but if anyone knows different please let me know. Thank you for any help you can give!
  19. Calcanay

    Hell Creek vertebra

    Hello! I got this dinosaur vertebra from Hell Creek (Montana) a few years back. It was sold to me as a Triceratops vertebra but I don't know how that ID was made. It's not in the best condition (has moss(?) on it and has been broken and then glued back together) but it is about 13-14 centimetres across so it is clearly from a big dinosaur, but there were plenty of those in Hell Creek (even two large ceratopsids - Triceratops and Torosaurus). Looking for any insight into how an ID could be made here and if Triceratops (or even just ceratopsid) is correct
  20. Praefectus

    Tyrannosaur Tooth

    Premaxillary tooth EDIT: Changed from Tyrannosaurus rex to Tyrannosaurid indet.
  21. Praefectus

    Indeterminate Tyrannosaur

    Dimensions: CH = 41 mm CWB = 10 mm CBL = 16 mm MC = 18 denticles/5 mm DC = 14 denticles/5 mm DSDI = 1.29
  22. A new paper is out online that you may find interesting: Verónica Díez Díaz, Géraldine Garcia, Xabier Pereda Suberbiola, Benjamin Jentgen-Ceschino, Koen Stein, Pascal Godefroit & Xavier Valentin (2020) A new titanosaur (Dinosauria: Sauropoda) from the Upper Cretaceous of Velaux-La-Bastide Neuve (southern France). Historical Biology DOI: 10.1080/08912963.2020.1841184 The Provence region of France is best known for its wine and Impressionist painters, but it also has yielded many of Europe's last sauropods. Garrigatitan constitutes the latest addition to southern Fran
  23. Hey everyone, I am curious to see your largest complete sawfish rostral spines, Xiphactinus sp. teeth, and Enchodus sp. teeth. Here are mine:
  24. I recently found this at Big Brook in NJ, USA. I am not sure what this is. The outer layer appears to have a spiral formation towards one end. It's just about 1 inch long (maybe a little less). Thanks for any help!
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