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  1. svcgoat

    Lance Formation Sediment #5

    1. Looks like frill possibly?
  2. jpc

    Jellyfish Impression?

    Hi all.... A visitor brought this into our museum this morning. Very unusual. Of course she wanted to know what it is. Two of us independently thought jellyfish impression. But things like that are super rare. It is from the Jurassic marine deposit here in Wyoming. The Fm has some invert impressions and tons of belemnites and the occasional ichthyosaur bones and ammonites. There are worm traces on this surface that you might be able to see. Anyone have any insights into jellyfish fossils? I am familiar with the Mazon Creek Essexellia and such, and Solnhofen jellies, but this is different.
  3. 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.
  4. tperry

    Fossilized Pine Cone?

    I found this a few years back and never looked into what it might be and thought this was the perfect group of folks to share it with for a possible ID. My best guess is a pine cone but I'd love to hear what everyone thinks here. I found this in the Ferris Mountain Range, south central Wyoming
  5. Fullux


    Hi, these are two pieces of a femur of a Camarasaur. It was found in the bone cabin quarry in Wyoming. The first piece is 16 × 9 × 7 and the second piece is 13 × 5 × 7, measured in centimeters. The femur was found in September 2020. I just wanted a second opinion on this one as I've made poor judgement in the past.
  6. I have a question on "restoration". I have a limestone slab from the Green River fm with a palm leaf imprint. I say imprint, because the leaves have no coloration remaining. I have been trying to decide on the best way to add color back so that you can actually see the leaves without needing some oblique lighting. Because of the porosity of the stone, I worry that trying to paint them will leach the paint outward and make very blurry looking leaves. I was thinking that using a very thin consolidate should seal the stone without obscuring the detail and allowing it to be painted over th
  7. hey! I would like to work on some fossil fish from the green river formation, does anyone know where I can find some that ship internationally. Please PM me any suggestions Cheers Leon.
  8. Hello, I have what was traded to me as an ornithischian jaw from the Morrison Formation of Wyoming. It measures 5 cm high and has 2 teeth sockets. I believe it may be a Camptosaurus (due to being the only large ornithischian there) partial jaw, but I cannot exclude the possibility of it being a partial theropod jaw. May I have your thoughts? Thank you.
  9. Hello all, As a belemnite collector, I am looking for the American Jurassic species Pachyteuthis densus (Meek & Hayden, 1858). Does someone have this species and is willing to trade some examples of this particular species? Kind regards, Ruben The Netherlands
  10. Picture heavy and pretty darn wordy heavy as well. You have been warned. The photos are by both caterpillar and me. In 2013 my wife and I went to France for a fossiling holiday. There, we met some great folks (allo coco, herve, capt nemo), one of whom came to visit us for some fossiling in 2016. Known here on TFF as ‘caterpillar’, Dominique was here again at the end of Sept into Oct for a two week Wyoming fossiling extravaganza. I took some vacation from work and did some organizing and called a few folks… and off we went. (Ok, it took a little more organizing than that, but you ge
  11. Jurassicbro238

    Lance Formation Fossil ID

    I was able to dig in the Lance Formation last summer and finally got the chance to look at this find more closely. I don't think this is a dinosaur fossil and I'm not familiar with the skeletal anatomy of the other vertebrates at the site. Anyone know what it is? I tried taking all the relevant angles. This one came from Niobrara County in Wyoming if that helps.
  12. Still_human

    Sauropod process?

    Hi there everyone, I just wanted to get some opinions on something. This is supposedly a sauropod transverse process. Can anyone confirm or reject that claim, or just give me your thoughts? It just says “a Jurassic site in Wyoming”, so that could narrow down the potential family/species. I’m sure you can tell it’s apparently the top and bottom of the same bone, just broken and missing a bit in between. Thanks for any and all help!
  13. Dino Dad 81

    Egg Shell take 2

    How about these? They're also from Weston co Wyoming (granted I bought these two, whereas I dug the previous-posted tooth and non-eggshell). Since we don't have anything from Lance to compare to, I suppose I'm really asking: (1) is it egg shell? (2) is it dino? (3) have you seen anything like it from JRf or HCf?
  14. Hello, I am making a great of in-situ pictures of my fossil hunting trips for this year. We now have a foot of snow in the ground so fossil hunting season is over. ☹️ These pictures occur in Wyoming, Montana, South Dakota and North Dakota. Mostly Cretaceous aged sites but some Eocene from ND. They are mostly tooth related. I hope everyone likes in-situ pics as much as I do!
  15. Grad student finds a new saber-toothed species, in a museum, University of Oregon, Department of Earth sciences Abstract The open access paper is: Barrett, P.Z., 2021. The largest hoplophonine and a complex new hypothesis of nimravid evolution. Scientific reports, 11(1), pp.1-9. Yours, Paul H.
  16. I know next to nothing about radioactivity-- enough to know licking fossils is inadvisable, although I'll admit that wasn't terribly disappointing news. What I'm wondering is whether specimens not radioactive enough to endanger a person are capable of damaging other specimens. Is there a need to segregate displays here, or am I just confused about the mechanics of this? My specific reason for asking is that at the moment I'm planning for my current favorite mineral specimen (which I am babying forever), an almandine garnet from Broken Hill, New South Wales, Australia, to share a small shelf ar
  17. Hello, this is a very small tooth that I had a hard time taking pictures of. I need a new camera or phone able to take nice up close pics!! This tooth was found at a site in Wyoming that I am unsure whether it is Lance or Mesa Verde formation wise. Anyway, this tooth is complete and very nice looking. I believe it is Ceratopsian but as to which species I am unsure. You can see the size of it as compared to my finger (sorry, I work with oil based materials and my fingers are stained up!). Please let me know what opinions y'all have!
  18. Hi I am going to Wyoming, Montana and maybe South Dakota with my brother in late May and very early June 2023. And we would of course like to look for dinosaur fossils. We know we are not allowed to collect on "State land". But can anyone help with contact to a private owner of land with dinosaurfossils. So we can pay for a couple of days and bring a few things home to Denmark. (I know of Paleoadventures). Hope someone can help us. Thank you and kind regards Torben
  19. jnicholes

    Coprolite identification

    Hi everyone, I am extremely sick today, so I decided to go through my fossils I found in Wyoming over the years while laying in bed. While going through my fossils, I found a piece of large exposed Coprolite. I thought to myself, “I might as well try to extract it. I’ve got nothing else to do because I’m so sick.“ After about 10 minutes of working with it, I was able to extract it in one piece. Then, it broke in my hand into two pieces. To my surprise, inside the Coprolite where it broke, there were bones. Looks like fish bones. Whate
  20. Here is a great video from a geologist that explains how purported giant tree fossils form. Reminds me of what we try to do on the Forum: using geological principles and logic to determine if a rock is a fossil. Debunking purported fossils seem to be a Sisyphean task around here.
  21. Hey all. I had these pictures sent to me by a friend, and we're both totally stumped over what this possibly could be. It was found pretty densely surrounded by other shattered bone. Any help at all would be greatly appreciated- we've really been scratching our heads over this one!
  22. Hello, I believe this bone shows evidence of teeth scoring from a predator Dinosaur (raptor or other theropod) and I am asking for a confirmation of this. I found this a few days ago in Wyoming in a formation I believe may be the Lance but I am not sure. Teeth there include Archeroraptor, other Dromeausaurid (sp), triceratops, avaceratops, paralbula, myledaphus, hybodus shark, edmontosaurus, borealasucbus, brachychampsus, fish, a couple of mammal types, large theropods, Aublysodon?, lissodon, Ankylosaurid, melvius as the most commonly found specimens. Of course, none are common but just in com
  23. A new polycotylid plesiosaur has been recovered from the upper half of the upper member of the lower Maastrichtian (Late Cretaceous) Pierre Shale Formation of Wyoming: Serpentisuchops pfisterae, the snake-like crocodile face. The interesting aspect to this new discovery is that this polycotylid, contrary to most other known members of this clade (that is, all with the exception of the Turonian Thililua longicollis and Manemergus anguirostris from Morocco), has a elongated neck, convergent on those of elasmosauridae. The pertinent article can be found here: Scott Person
  24. minnbuckeye

    Petrified Blue Forest

    I had the opportunity to cruise around Wyoming, Colorado, and Utah on my own for 5 days The first day of my fossil hunting excursion was to be spent at the Petrified Blue Forest site in Western Wyoming. Having been there before, I knew fragments of wood abound, many carrying the blue agate on it. But I was determined to find a “large” log this trip. I had researched how to up my odds and stopped at a hardware store the night before and purchased a shovel as step one. So early that morning, I found myself looking out at the vastness of this “forest” thinking where to start.
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