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  1. ThePhysicist

    Hell Creek collage

    From the album: Hell Creek Formation Microsite

    A representative sampling of the diversity captured in microsites - everything from Tyrannosaurus to mollusks.
  2. hadrosauridae

    Hell creek rib prep

    During my trip to the Hell creek formation of South Dakota last year, I found this large rib weathering out of a hillside ("cliff side" is a better description). I jacketed what was still in situ, and collected all the surface float at the site, and at the bottom of the cliff it was in. The length in the jacket was 32 inches. Can't determine which species this rib belongs to, most likely from Edmontosaurus or Triceratops, but it will have to remain indeterminant. After removing the excess matrix in the jacket, I discovered that the rib was far more fractured than I thought. Because the rib ended up being pinched by the jacket, I had to remove it in sections instead of a single piece. That worked out for the best anyway, for prepping it in my blast box. I have 40 hours into the removal and gross cleaning of the sections. Another 10 hours and still counting for separating all the breaks and cleaning out all the matrix in between bits so that everything can be reassembled properly. It looks like the rib has a healed fracture, but of course, one of the modern breaks goes through the remodeled bone. The jacketed portion looks to be the main shaft of the rib, only missing a few centimeters of the distal tip, based on the the end has thinned and flattened. The collected float should be the majority of the head, but reconstruction of that will be much harder. I wish I had a cast of a complete rib head to correlate the bits of float to their original position.
  3. hadrosauridae

    Hell creek rib

    This unknown rib was recovered a couple months ago from a private ranch near Faith, SD. I haven't had time to start work on it until a couple days ago. I'm keeping track of my hours on this one just out of curiosity. I never tracked the work on any previous prep projects. So this was found partially exposed with a number of pieces found as float at the bottom of the hill. Everything surface was collected, then the rest of the rib was jacketed to remove. It took me 3 hours to uncover and remove it from the jacket, and then 5 hours separate and clean the pieces of the first section. 12 hours total to clean 3 sections, and then another 3 hours for the micro cleaning and reassembly of those sections. Its only going to get harder, because much of the rest of it looks to be heavily crushed and displaced. It also looks like there is a healed fracture to this rib, but of course, the modern break goes through the remodelled bone.
  4. Came from a box of Lance Creek Formation Triceratops bones. Any idea what it is? Im guessing it’s a skull fragment but not sure.
  5. Dimensions: To begin, the specimen is 36cm long, 19cm wide at the base (widest point), and about 7cm thick at the thickest point (base). Background: I am a student doing research in the Museum of Biodiversity at Notre Dame. I have begun a project to try to identify many of the fossils in the collection. Many years ago, there was a faculty member who was a paleontologist who collected specimens for many years, most of which now reside in the museum. The issue is that he passed away suddenly and left many fossils without much or any information attached. From what I have been able to gather, most of his fossils have come from the Hell Creek Formation in Montana (66-65 mya, late Cretaceous), due to all of his fossils in field jackets coming from this location (like this one, that I removed from the jacket). All other jackets (that are currently opened) in the museum contain remnants of a triceratops. There are many more that have not been opened from the field, which I believe were collected in the mid 1990s (unimportant). Because of the ambiguous nature of the fossil and my inexperience with fossils (I have just started exploring the field). I am the only person in the museum who has touched the fossils in at least 5-7 years, as there is no full-time geologist or paleontologist on faculty at ND, and the collection is solely taken care of by students who have interests. Identification?: When I first started working on the fossil, it was labelled with an identification as "Fish?". I have absolutely no idea who tentatively identified it as such, and in looking at it, I have no idea what led them to the conclusion. I, personally, do not see anything fish-like about it, sans the vague shape resemblance. Because of this, and my suspicions about where it was found and what other fossils are found at Hell Creek, I thought that it was unlikely a fish. From the concentration of ceratopsidae that are found in the formation and the amount that we have in the museum, I started to explore the possibilities of it being a part of one. Because the museum also has other parts of the same triceratops skull such as two horns, the beak, and one small skull fragment. I first thought that it may be a frill, due to the lines that I thought might be blood lines, which are found on most frill fragments, but the patterns appeared to be different (see photo 2). I then looked into other parts of the skull that might fit this fossil fragment. Following this, and based on the ridge that runs along what I assume to be the back of the specimen, I theorized that the it may be a piece of the squamosal bone morphology of the skull of a ceratopsian. Also, because there are parts of an ankylosauridae in the museum, I thought that it may be an armor fragment. Please know that these preliminary identifications are based on my limited knowledge of the morphology of late Cretaceous animals, and the lack of information I have on this specific fossil. Any help will be appreciated, and I will be looking closely to respond any questions on the subject. Lastly: As I am beginning in the subject of paleontology, where do you suggest that I can get my information? Are there any preferred resources, textbooks, or databases where I can increase my knowledge? Thank you for your help, and I look forward to learning more and maybe eventually contributing to the Fossil Forum when I learn more in the future. I have been using the one textbook in the museum dealing with fossils of these sort, where I read about the frills and skull morphology of ceratopsidae: Romer, Alfred S. (1966). Vertebrate Paleontology. The University of Chicago Press.
  6. Hi All, First time posting! I need help with a fossil I found in the Hell Creek Formation of Harding County, SD this year. At first I thought it was a piece of Triceratops frill, but the more I prepped it, it appears to have edges with bone surface most of the way around it. If it was a piece of frill, I would not expect the edges to taper off (unless it was from a juvenile I guess). If it is a scute then it is absolutely huge and not like anything I have seen before. Hopefully the fossil community can help shed some light on this mystery. Any photos or links to reference other fossils would be helpful as well. Thank you in advance for your help! - Ryan
  7. Mjq8

    Triceratops frill?

    From hell creek fm Looks like frill to me? Bottom half looks broken or weathered?
  8. Hello everyone. I was flipping channels last night between an old western and other channels when I came across this show on the public t.v. channel. (mpt.org) It caught my attention because they were talking about fossils. I wasn't aware of the title, yet. I wonder if anyone saw it also. If not, the show followed the discovery of "the largest Triceratops" ever found. Big John. In the Badlands of S. Dakota. They interviewed the gentleman who discovered and, extracted it. I'm sure a lot of you know who this is. Then, the show follows Big John's journey to Italy, after it was purchased from the discoverer, where it was prepped. It was there that they determined how big "Big John" really is. Guinness Book of World Records was approached by the curator to classify it as the largest Triceratops. And, then the show follows the media firestorm created by Big John as it heads to an auction in France where it was sold for an unreal amount of money. Fortunately, it was purchased by an American and brought back here. The show reveals the purchaser at the end, and, where Big John is currently displayed. In a children's museum in Tampa. I'm sure this could be a sore subject for the professional paleo people on this site. But, I'm just curious to know everyone's thoughts. I feel, in a way, the story had a happy ending in that Big John is here and not in someone's living room on the other side of the world. I have other thoughts, but, will wait to see how this conversation develops. Thanks for reading.
  9. FF7_Yuffie

    Triceratops frill

    Hi, what are the thoughts on this? It looks like other frill sections I see online. But I would like another,m more knowledgeable opinion in case it is something else. Lance Formation. Lusk, Niobrara County, Wyoming, 32 x 20 x 3 cm. thanks very much
  10. ThePhysicist

    A vantage over paradise

    From the album: Hell Creek / Lance Formations

    The Hell Creek formation exposed in Montana - a fossil-lover's paradise.
  11. ThePhysicist

    My first (self-collected) dinosaur tooth!

    From the album: Hell Creek / Lance Formations

    A shed Triceratops tooth found at a microsite
  12. Good morning, friends. I believe I posted this in the wrong forum originally, and it should be posted here. A VERY reputable paleontologist has prepared a triceratops scapula out west. It is massive. I’m curious about any thoughts you have on how to find out species ID (T. Horridus or T. Prorsus?).
  13. Frightmares

    IMG_4300.jpeg

    From the album: Dinosaur Teeth

    Triceratops tooth from Garfield Couny, Montana.
  14. Frightmares

    IMG_6804.jpeg

    From the album: Dinosaur Teeth

    Some of my herbivorous dinosaur teeth. I need to fix a couple of the labels, as I've recently learned that "Tegana Formation" isn't actually a thing.
  15. Frightmares

    IMG_4304.jpeg

    From the album: Dinosaur Teeth

  16. Frightmares

    IMG_4306.jpeg

    From the album: Dinosaur Teeth

  17. Frightmares

    IMG_4301.jpeg

    From the album: Dinosaur Teeth

  18. Triceratops horridus (or prorsus) (Marsh, 1889 /1890) Late Cretaceous, c. 67 Ma Hell Creek Formation, Powder River Co., Montana After acquiring a gorgeous T. rex tooth, I could not resist the opportunity of acquiring a tooth of its likely prey - Triceratops. I’m aware of the difficulty in identifying ceratopsian teeth and the impossibility of distinguishing between T. horridus and T. prorus. As Triceratops is the most commonly encountered genus within the HCF, this is labelled as being Triceratops horridus or prorus in my collection. I understand that the locality is known for T. prorus so it may well be that this is T. prorus. I love this specimen for it still having the root - so unlikely to be a shed tooth.
  19. ThePhysicist

    An ecosystem on my desk

    From the album: Hell Creek / Lance Formations

    Microfossils are the means by which we can most fully appreciate the diversity of a past ecosystem. From salamanders to Tyrannosaurus, an ancient river captured and preserved dozens of species that lived in Montana 66 million years ago, at the terminus of the time of dinosaurs. In this small collection alone, I count at least 27 species of dinosaur, lizard, crocodile, fish, shark, salamander, turtle, mammal, and mollusk.
  20. https://www.bbc.com/news/world-europe-58998367
  21. Good afternoon! I'm new to the forum and was hoping you all could help me with framing advice. I wanted to get a very special gift for my little brother for his birthday (his twin passed away a few years ago so I always try to make it a super special day), so I purchased a trike "spitter" tooth online. It's 1 - 1/8" in size and I was thinking about purchasing a floating frame to display it but I'm stumped as to which size I should purchase. I'm including a photo of the type of frame I was interested in using and the tooth I purchased. Is this the best way to display the tooth and if so, which size frame should I get? If there's a better way to display, please share any suggestions! Can you tell I'm new to this? Thank you all in advance, Amy
  22. Hello guys, I recently bought a triceratops ceratopsian frill fragment. The seller said it's a squamosal piece from Hell Creek Formation, Garfield County, Montana, USA. The size is 15x10x4,5cm I read several threads about frills to check authenticity and I see important characteristics on this piece. The blood vessels and blood grooves (a bit smaller than on other frill fragments I saw) are visible. Also the thickness is good. So in my view it looks genuine. What do you think about it? Thanks and have a nice weekend. Max
  23. ThePhysicist

    Ceratopsid Tooth

    From the album: Hell Creek / Lance Formations

    A rooted Ceratopsid tooth - either Triceratops or Torosaurus (though it's more likely to be Triceratops since it was far more abundant in the HC ecosystem).
  24. Dino Dad 81

    Triceratops horn section?

    Hi all, Do you think this thing from the Lance formation in Weston co, Wyoming could be a proximal section of young Triceratops brow horn? Thanks!!
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