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  1. citronkitten

    Peace River: types of turtle shell IDs

    Greetings, I am working on my next display and am trying to sort through the various pieces of turtle shell. I have attempted to divide and label them as much as I can, using references I will post. This is my first attempt at turtle shell and have relied entirely on examples and available resources, so any correction/confirmation/explanation would be most appreciated. On my paper (in case it's unreadable - tendonitis flaring up so handwriting quality going down), the upper half of the page is carapace, the lower half is plastron, the left half is softshell and the right half is hard shell. I included a composite image which has better focus on each quadrant (terrible lighting today), and a larger image on which I wrote my attempts at further identification. References: This whole thread: This image (location directly on image): This image was very helpful: And these hand-drawn diagrams I found to be most accessible:
  2. Hello all, Im stumped on this little bone. Originally I thought it was part of giant tortoise because of the similarities in internal consistency between it and the various osteoderms I have. still not ready to abandon that idea. Then I started looking at it like a carpal or tarsal bone but I can’t find a good match there either. Spent a long while In everything from deer to bison. Sesamoids too. Seemed like a nice groove for some soft tissue to pass over on the arched side of the bone (bottom left panel of first photo) Now I have myself pretty frustrated. I know enough to know it’s something that was important. Too many articulation locations. Just can’t tell what. Any leads for research appreciated or ID appreciated. Thanks! Jp Here are images of the mystery. It’s about 25mmx20mm depending how you measure it but it would fit snugly into a box of those dimensions. second panel are some additional images with it next to a couple tortoise osteoderms examples. One small and one larger. (It’s the middle size of the three)
  3. citronkitten

    Alligator osteoderm?

    Attempt 2 for organizing queries regarding Peace River fossils from 26/12/23. I've set the fossil on 1cm grid paper, included a 1cm ruler underneath (or is the mm side better? my ruler has both, so easy change), and used my husband's newer iPhone to try to get a sharper image. I realize some bits are still blurry/dark and have tried to play with filters to get them as sharp as possible. Please let me know if this is heading in the right direction. These are all images of the same fossil, so I haven't done any numbering/labeling on the images. I believe this is an alligator (Alligator mississippiensis) osteoderm due to the deep 'pock' marks. Confirmation or correction would be much appreciated! Cheers!
  4. Sisco Kid

    Ankylosaur Osteoderm

    Discovered in 2023 in northwestern New Mexico, I found what is believed to be an ankylosaur-type osteoderm. Compared to many other fossils of that type, it is rather small and thin, with a diameter of 88mm X 75mm, and measures 21mm thick from the flat basal surface to its peak on the opposite side. The thickness of the edge is 8mm. The basal surface is remarkable in that it is essentially intact, and displays an intricate web of structural fibers. These photos were referred to a prominent paleontologist in Switzerland who believed the osteoderm may be from an ankylosaurus in the family Ankylosauridae. A local paleontologist was also notified of the find. Any observations or additional information on this osteoderm is invited.
  5. Maxaurus

    Ankylosaurid scute ID

    Hello there, Today an ankylosaurid scute was in my mail Information from seller: Euoplocephalos tutus Cretaceous Judith river formation Alberta, Canada One question about this: is Judith River fm the correct name if it is from Alberta? Isn't it Oldman Fm, or Dinosaur Park Fm then (territories of the Judith River group in Canada)? Based on the information I found online.. in these two formations in Canada the following ankylosaurids were found: Oldman fm: Scolosaurus Dinosaur Park fm: Anodontosaurus, Dyoplosaurus, Edmontonia, Euoplocephalus, Panoplosaurus, Platypelta, Scolosaurus I will ask the seller again for the exact location but I also wanted to ask some experts here.. Thank you in advance. Best regards Max
  6. Hi all, Here's a conglomerate fossil I found on the depots of Romontbos on September 24th. It dates to the Maastrichtian stage of the Cretaceous and probably derives from the Romontbos Horizon of the Chalk of Eben Email. On the bottom left is a piece of crustacean leg, with a piece of echinoid test lying inside out on top of the large orange fossil, a spine lying on top of that. The large orange fossil itself, however, is a bit of a mystery as it seems to have a cylindrical shape - that is, both round and deep - with wavy colour pattern, is incomplete on the left side, and is hollow based on a single projection on the front of the piece. Is this just a large fragment of shell, of something else? And then there's this greyish roof-like fossil on the top right. Originally, I thought this was a fish scale, since it's got a bony texture exposed on one side and is rather thin. However, I then got told yesterday that it's too big for a fish scale - which, in these deposits, are thinner and of a reddish-brown colour to boot. I'm now wondering whether it could be the dermal denticle of a ray? Any interpretation of any of these fossils is welcome! @Manticocerasman @Mart1980 @ziggycardon @Jasperfossils
  7. Shellseeker

    Box of Chocolates

    Out hunting today, Found lots of different fossils, most of which I knew. I thought I knew this Osteoderm from the edge of the carapace, but my friend disagreed . Unusual after hunting together for the last 10 years. I decided to let TFF decide. Armadillo or Glyptodont and why? Found a variety of teeth, most broken and worn. Megs, Equus, Tapir, Camel, Mastodon, Mammoth, Tridactly, Whale, Baracuda.... Makes for an exciting day. Here are some of them..... Certainly , in the Peace river, you never know what you are going to get... At the end of the day, we had a visitor, who decided to sit on my friend's discard pile pretending to be a rock or a leaf blowing in the wind. Refused to leave until after we did. This one was rocking to the music, dancing in the breeze...
  8. Sonickmonx

    3 Crocodilian/Borealsuchus Scute ID

    I collected these 3 crocodilian scutes from the bank of the Pee Dee river recently. They come from a lag deposit at the base of the PeeDee formation that immediately overlies the Donoho Creek formation. This lag deposit would be in the range of 65-75 mya, towards the end of the Cretaceous. I am curious about the noticeable differences in the 3 scutes and wonder what they came from. Borealsuchus and other crocodilians are known from this locality, and in my opinion the 2 with the larger holes look like borealsuchus more than anything else I've seen. Would love any input from people more knowledgable than me!
  9. Shellseeker

    Hot Day, small fossils

    Another hot day when it is nice to be in the river water. Zolfo is a little over 6 feet and so we try to exploit those spots which were lower than average 2-3 months ago. A lot of interesting finds, many on the smaller side. A spit tooth and a small Meg I almost recognized this as a large version of a Tilly bone. Hopefully some can confirm or comment... Rostral Tooth.. Is this identifiable to Pristis pristis ? A dolphin periotic, have to work on which dolphin. It has some variation on what I normally find. I think the next is a sponge (silicified). Not clear what else it could be... I see many of these endocasts of shells over time. Decided to attempt the specific shell this time... Finally , an interesting Osteoderm.. I would like it to be a Glypodont tail Osteoderm, but it might be from a Giant tortoise.... Should be other Peace River hunters who have seen these...
  10. Fissiletag

    Turtle Shell Fossils

    I'm trying to identify a couple fossils that were labled as turtle fossils. Does anyone know what they are?
  11. Dino Dad 81

    Nodosaurid osteoderm?

    Hi All, Having gotten an idea of what the outer texture of Nodosaurid osteoderms looks like from my last post, I'm wondering if this looks like one. It's from the Lance formation of Weston co, WY. I think there are two finished sides there and two cracked sides. Thanks!!
  12. 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.
  13. Daze

    Large crocodile osteoderms?

    These are sold as Elosuchus osteoderms from the Kem Kem, Morocco. I have seen a lot of crocodile osteoderms, but never this huge. Can they really get this big and are these actually osteoderms or are these parts of the crocodile skull? #1 Length: 21.1 cm (8.31") Width: 7.6 cm (2.99")
  14. Thomas1982

    Venice Beach, Florida Fossil ID

    Hi all, I found this possible osteoderm on Venice Beach last month. What do you guys think?
  15. Hi! I've recently collected a number of osteoderm fragments and I'm trying to identify what organism (s) they came from. These were all collected from Holden Beach, NC USA. Holden has recently had the beach "renourished" which stirred up a lot of specimens from the Peedee formation. I think the majority of these are from a soft shelled turtle, but I'm very novice
  16. Dino Dad 81

    Ankylosaurs osteoderm

    Hi all, I'm looking to confirm whether this specimen from the Hell Creek--Powder River county, Montana--is from an Ankylosaurus. I'm also wondering if its position can be determined, since it has such an unusual shape. Does the hollow proximal side suggest it was part of the tail? Thanks,
  17. njcreekhunter

    New Jersey Nodosaur Osteoderm

    Recently I visited paleontologist Ralph Johnson. Ralph gave a tour of the MAPS (Monmouth Amateur Paleontologists Society) collection and shared his extensive knowledge of New Jersey Paleontology. I also brought a few of my finds from the late Cretaceous of New Jersey hoping Ralph could identify them. One of which was a piece of bone with an interesting texture and shape. Ralph identified this piece as the second nodosaur osteoderm found in New Jersey. We compared it with a cast of Ralph’s nodosaur scute and it was a match. Here are some photos of this specimen. I'm thrilled to have this piece identified.
  18. Dino Dad 81

    Morrison osteoderm?

    Hi All, This thing comes from the Morrison formation in Crook county, Wyoming. It's about 2.25 x 1" x 3/8". Any thoughts on what it is? With the veins on both sides, I'm wondering if it's an osteoderm. Thanks!!
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