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  1. I have often seen Edmontosaurus annectens teeth labelled as having come from the Lance Formation in Wyoming for sale online. It is my understanding that the Hell Creek and Lance Formations are very similar in many respects, and given their proximity to eachother it's no doubt quite easy for sellers to confuse or conflate the two, so I was wondering if there were any reliable means by which material from the Hell Creek and Lance Formation could be distinguished. Thanks in advance for any guidance Othniel
  2. Chodge613

    Theropod or Turtle Toe Bone?

    I found this fossil toe bone in the Lance Formation of Wyoming. Is it a theropod toe bone or a turtle toe bone? It seems hollow.
  3. I found this tooth on private property in the Lance Formation, and I wanted to know what y’all think. Dr. Bakker told me ceratopsian (Lepto if I remember correctly). He said it was one of the teeth oriented toward the front of the mouth. I’m inclined to believe him, but has anyone else seen this before?
  4. Dino Dad 81

    Strange rock from the Lance formation

    Hi all, This rock comes from the Lance formation in Weston county, Montana. It's fossil-caliber solid feeling (as opposed to clay-like matrix in this area), but it's obviously not a solid fossil (unless it's a coprolite of mashed up stuff). There seem to be many fossils in it. The only thing recognizable to me is a couple of ceratopsian teeth. I just wanted to make sure it wasn't something I should leave intact (such as a coprolite) before I try to dismantle it...lol It's wet in these pics.
  5. Hi guys, I made this post about this small theropod tooth from the lance creek formation, Wyoming, USA. I bought it years ago and it was sold to me as belonging to a dromaeosaurid. It doesn't seem to me that it corresponds to any "raptor", but to a baby of Tyrannosaurus rex/Nanotyrannus lacensis. What do you say? Thanks in advance! Ps: the tooth is 1,2 cm/0.47 inch long and 0,6 cm/0.24 inch wide.
  6. Dino Dad 81

    Tooth in jaw?

    Hi all, Any thoughts on what this chunk might come from? It was found in the Lance formation in Weston, WY. Thanks!
  7. Ericlin

    Herbivore tooth?

    I found this strange tooth in Lance formation matrix. It is very small so I apologize for my image quality. Not sure what to make of it maybe some herbivore dinosaur tooth or lizard tooth? It’s .1875 inches. Interested to see what other people think. Thanks
  8. svcgoat

    Theropod tooth fragment?

    I see what I think are serrations on this very small tooth fragment. Is this Theropod? If so is it possible to id?
  9. svcgoat

    Lance Formation Sediment Box 3

    I got another box of sediment will be going through it over the next week or so. If @Troodon or @jpc could help would be appreciated
  10. Nanotyrannus35

    Possible Ankylosaur or Nodosaur Osteoderm

    I have this piece of bone that due to the texture and shape I think might be an ankylosaur osteoderm. It also seems like it might have some predation, shown by the circled area. It's from the Lance fm of Weston Co. WY. Thanks for any help.
  11. Here is a rock with what I think are two invertebrate fossils from the lance formation in Wyoming. The rock is 2x1 cm 1
  12. Fragment takes up most of the sediment which is 1.5cm please not the serrations in the photos. All photos are the same with different lighting. @Troodon @jpc Is this actually a tooth fragment or are the serrations fooling me?
  13. svcgoat

    Lance Formation Sediment #6

    1 Last picture is cleaned up the groove was interesting
  14. svcgoat

    Lance Formation Sediment #5

    1. Looks like frill possibly?
  15. Jurassicbro238

    Help on ID for Lance Formation Fossils

    Hello, I've got some fossils from Niobrara County, Wyoming in the Lance Formation that need some ID if its possible. The scale bar is in inches (top) and centimeters (bottom). Thank you for your time. #1 I'm confident is a skull piece but I was wondering if anyone knew what bone or perhaps what group of animals it belongs to? I see a hole on the inner side that was most likely a passage for a vein, and there are smaller holes on the outside as well. I'm hoping it's identifiable because one of the edges is not broken and is natural. #2 At first I thought was warped gar scale. After cleaning it however, I found that it seems to have an articulation point on the end. I haven't seen any gar scales like that and I'm wondering if it's another fish I'm not aware of. Or maybe its not a scale at all?
  16. Dino Dad 81

    Tiny vertebra

    Hi all, This tiny vert comes from the Lance formation in Weston co, Wyoming. It's about 0.25"x0.25"x0.25". I'm wondering if the relatively large pleurocoel suggests that it's a tiny dromie. For all I know, it's not even dinosaur.
  17. Hello! As I've gone through what I've collected this past summer, I'm finding really interesting things that I took home with me. These come from Niobrara County in Wyoming. I've taken pics of various angles of the fossils. Scale bar has inches (top) and cm (bottom). I'm not completely sure what some of these pieces are so any ideas or suggestions would be helpful. Thanks in advance! Set 1: Vertebral Process Is it possible to ID a process this broken up? I'm thinking it's Edmonto but really holding out for Triceratops Set 2: Triangular bone A friend suggested it might be a Triceratops epoccipital so I wanted to see what you all think Set 3: Skull fragments? There's a lot of blood vessels that would've run through these bones. I'm thinking they might be Triceratops frill (haha can you tell I want some Trike material?) Any thoughts or should I leave the ID at unknown? Either way, they look really interesting. Set 4: Scute? I don't see an identifiable pattern on it but that line running through it makes me think turtle scute. Set 5: Unknown I'm not sure what these are. They both have a really interesting textures running on the surface and they are very thin. Set 6: Jaw piece? Finally, this neat piece that I found on an ant hill. Looks like a jaw piece to me but not holding my breath.
  18. svcgoat

    Sediment from Lance Formation #2

    Here are more interesting looking items that I got through sifting
  19. svcgoat

    Lance Formation Sediment #3

    Here are a few more finds from sifting. #1
  20. svcgoat

    Sediment from Lance Formation #1

    I'm going to need ids as I go through this sediment here are some things to start
  21. I got a big box of unprepped material from the lance formation here are a couple pieces I started cleaning off. First piece Approx 6x5cm
  22. I've had these crocodilian teeth from Niobrara County in the Lance Formation for a while now, but I'm not sure how if its possible to ID them beyond "Crocodilian tooth." I've generally heard that the "sharp" morphology are Borealosuchus teeth and the short bulbous teeth are Brachychampsa. Is that a safe rule to follow? I've also noticed that there are some slight differences in the teeth I have (hopefully the pics make it visibile). They're small, but the two on the lower left have noticeable raised striations (not sure what to call it). However, the one on the lower right and on the top are smooth. Is this just a difference in preservation? Identifiable traits to the species level? Positional characteristics? Individual variation? I'd like to hear any opinions on this. Thank you for your time
  23. Jurassicbro238

    Lance Formation skin impression?

    Hello! I was wondering if this is a soft tissue impression. The specimen is about 2cm long and I think the rock around it is sandstone. It was found in Niobrara County, Wyoming in the Lance Formation. I would like to know what you all think!
  24. Dino Dad 81

    Baby Triceratops Frill?

    Hi, We found this roughly 1" x 1" x 0.2" piece in a box of rock and dirt I ordered from the Lance formation in Weston co, Wyoming. Could this be a frill section from a baby Triceratops? Such a beautiful little thing, whatever it is.
  25. Nanotyrannus35

    Possible Tyrannosaurid Bone

    I have this piece of chunkosaur from the Lance Formation. It looks like it might have the trabecular structure of tyrannosaur bone. It's from the Lance formation of Weston County, WY. Thanks for any help.
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