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  1. 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.
  2. 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.
  3. 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!
  4. 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
  5. 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?
  6. 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
  7. Here is a rock with what I think are two invertebrate fossils from the lance formation in Wyoming. The rock is 2x1 cm 1
  8. 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?
  9. svcgoat

    Lance Formation Sediment #6

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

    Lance Formation Sediment #5

    1. Looks like frill possibly?
  11. 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.
  12. 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.
  13. svcgoat

    Lance Formation Sediment #3

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

    Sediment from Lance Formation #2

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

    Sediment from Lance Formation #1

    I'm going to need ids as I go through this sediment here are some things to start
  16. 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
  17. 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 s
  18. 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!
  19. 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 sug
  20. 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.
  21. 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.
  22. 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.
  23. Dino Dad 81

    Lance fm egg shell ID

    Hi All, Any thoughts on what type of animal this came from? It's from Weston Co, WY lance formation.
  24. Hello Eveyrbody! I have a question about Tyrannosaurus rex teeth. A recent study has shown that T.Rex accounted for about 24% of the creatures in the hell creek formation. T.Rex were more common then edmontosaurus. Yet it is usually the most expensive fossil you can get from the hell creek/lance creek. So if Edmontosaurus were less common then T.rex then how come their fossils are way cheaper?
  25. Dino Dad 81


    Hi and thanks for taking the time to check this out. I've got a Dakotaraptor prospect from the lance formation, Weston Co, WY. I think the biggest challenge in IDing is the condition of the tooth--particularly the serrations. The specs look good to me and I think there's just enough left of the tooth to have some confidence in the specs being as follows: CH: 19.2mm CW: 10.2mm Mesial serration density: about 5 per MM Distal serration density: about 4 per MM Base cross-section: Almond, no pinch whatsoever Mesial carina: straight and serrations ap
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