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  1. Here is a rock/fossil from Moffat co. Colorado USA. Any ideas if it is a bone fossil? If so, what might it be from? It was found on the surface of a very rugged old road with no other similar looking rocks in sight. I did find a fossilized shell not far away (20 m).
  2. Found these teeth while hiking at Pawnee Buttes last year and am unsure what they belong too. My top guess would be Oreodont though.
  3. Mochaccino

    Green River Formation Larva?

    Hello all, Need help ID this insect larva from the Eocene Green River Formation of Colorado. It's 1.5cm long, about 2cm if outstretched. As far as I can tell it has a series of large, bulbous protrusions spiraling along the length of its body, and one end has a sharp taper/point, though I'm not sure if that's the head or tail end. It has a very distinctive look so I feel like it would be recognizable if it's something that's been described before. Any help appreciated, thanks.
  4. Hey, headed into Denver tomorrow, passing Dinosaur Ridge in Morrison, then down to Colorado Springs. Can anyone point me in a direction to search for a few fossils along the way? I have heard Florissant is productive, but anywhere else between Denver and Colorado Springs? Thanks for any help,
  5. My first fossil hunt post. Yesterday (May 29 2022), I went down to the Florissant Fossil Quarry in Florissant Colorado. Its about a 45 minute drive west of Colorado Springs. Its a very well know site partly because of the very well preserved fossils and relative abundance but also because of how easy it is. You pay a small fee and they give you the tools and you pick up shale and start splitting, that simple. You're guaranteed to find something if you try. If you are in the area I would definitely recommend stopping by, its just not really on the way to any popular stops. There is also th
  6. I'm going to be taking a trip to the southwest (Colorado, Utah, New Mexico and possibly Texas) pretty soon, and I was wondering if anyone could give me some ideas as to where I could go fossil hunting. I'll provide the specific areas we'll be traveling to; I also previously lived in Colorado and have already found a few good sites, but would definitely be open to any other suggestions. Colorado seems pretty promising with some good fossil quarries (Florrisant Fossil Hunting and the Morrison Museum), and I grew up with the Denver Museum of Nature and Science as well as Dinosaur Ridge. I'll
  7. Brett Breakin' Rocks

    Baculite Mesa - WIPS Field Trip

    It has been some time since I posted anything of note. I'm still adjusting to my new surroundings here in Colorado but I did at least join a local Paleontological Society (WIPS) Western Interior Paleontological Society. My first field trip with the group was out to Baculite Mesa in Pueblo, CO. A location that is famous with a storied history, that is still giving up its ancient treasures. The weather here in Colorado can be touch and go at best, and our trip was almost delayed/cancelled by a late winter storm. This was our neighborhood in Denver the day before the trip. But temperatures
  8. sharkysaurus

    Possible shark tooth?

    I found this tooth today in Colorado Springs. In the Pierre Shale formation. It looks very shark tooth like. I prepped it out a bit to expose it more. I think it might be Pseudocorax granti ? ... but I'm not sure. Could this be a shark tooth and if so what species?
  9. yardrockpaleo

    Crane fly larva? from Florissant CO

    A rather strange insect from the Florissant Formation of Colorado, looks like a larva or some sort of soft bodied insect. The first piece, in better condition: And the second piece: I can definitely see segments and it seems to be a close match to this Tipula hepialina (crane fly) pupa from the iDigPaleo system: Do you guys think it fits? Thanks in advance!
  10. Hello! I'm traveling to Colorado Springs this summer. And I'm hoping to do some fossil hunting within an hours drive of Colorado Springs. I'm a geology graduate from James Madison University in Virginia and I love to collect invertebrate fossils to share with the kids I teach. Anything from ammonites to crinoids to leaves. Any advice on where to look? Thanks!
  11. fossilsonwheels

    Mesaverde Formation Round 2

    I have been a little bored lately and missing micro matrix searches. It’s been awhile since I’ve gotten to enjoy hunting for tiny shark teeth. I got some more matrix from the Rollins Member of the Mesaverde Formation. My first time through that matrix produced one of my favorite finds, a 1mm Scyliorhinus tooth. This formation doesn’t provide much in the way of complete teeth but it is a fauna that was really quite diverse. The first search was with less matrix but I found enough to want to do it again. This time I have more matrix and in varying states. Some is broken down, some i
  12. I’m wondering if these two teeth (both are from the Morrison Formation in Moffat County, Colorado) have been identified correctly as Allosaurus and Marshosaurus. Here are the measurements of both: Allosaurus: 4cm long serration count is 10/5mm on anterior and posterior carinae base length is 21mm and base width is 13.5 mm (note from dealer: Please note that the base of this tooth is broken and the transition of enamel to root is not present. The base measurement may have been larger.) Marshosaurus: 4cm long se
  13. Hi everyone! I have my eye on a nice size sauropod tooth from the Morrison but before going for it was hoping to get some insight from an outside source as I have zero experience with the Morrison. The seller claims the tooth is 2 inches and was found in Moffat County, Colorado. He can't tell if it's Diplodocus or Apatosaurus either so any potential insight or tips on that would be greatly appreciated as well for this and future reference.
  14. Opabinia Blues

    White River Formation Carnivore Canine

    Hello! This is a canine tooth (that has been split in half) that I collected from the White River Formation (I believe Poleslide Member of the Brule) from Weld County, CO. I think it is a carnivore’s canine rather than simply an Oreodont canine just due to its size, but I could be wrong there I suppose. My best guess is Daphoeneus or similar due to its shape, it does not look like Hyaenodon to me, but again, could be totally off there. Pictured is the tooth’s lateral surface, interior (because it was split when I found it) and the “cutting surface.” Thanks!
  15. I have finally come to the end of my fun with the “Mesaverde Formation” matrix. There are a few unidentified shark fossils left. I know they may remain little mysteries and that’s ok but still worth a try. It was labeled Mesaverde by the seller but I strongly suspect it could actually be Mancos Shale. It did come from Delta County Colorado. As far as age goes, the best guess I have is Cenomanian-Turonian but it could be younger. There were Cretomanta teeth present but I honestly don’t know if they are found beyond the Turonian age. Thats all the info I can provide about the
  16. Hi All, This past summer, my daughter and I went to a couple of sites in the Green River Formation to look for leaf and insect fossils. Here's a video we made about our trip and findings. We also visited the Field House of Natural History in Vernal and the curator took us on a tour of the collection. cheers, Lloyd
  17. Hi all, new member here! I was exploring "Dinosaur Ridge" in Colorado near Red Rocks and found this interesting looking piece - any ideas as to what the cut-out bit might be? It's from the Morrison Fossil Area, which I believe produces Cretaceous period fossils. The part in question is about an inch long. Let me know if anybody needs more info/pics to help ID, thanks to all!
  18. kgbudge

    Creede Formation

    Some leaf remains from the Creede Formation, Colorado. This is an Oligocene lake sediment formation, rich in volcanic ash, that preserves a fair number of leaf fossils. Most are conifer needles, but you get the occasional broadleaf fossil.
  19. Jeffrey P

    Douglas Pass, Colorado Finds

    My partner and I visited Douglas Pass, Colorado last August: Eocene, Green River Formation, Parachute Member. The site represents a very shallow lake bed and is known primarily for fossil plants and insects. Recently I unwrapped her finds. The first one I think is some type of fossil seed. It is about a half inch long. The second, I think is a partial insect larvae, about an 8th of an inch. Let me know what you think. Thanks.
  20. mdpaulhus

    Douglass Pass Leaf

    I collected this at Douglas Pass last year. Can anyone identify it? I was thinking it was Lygodium, but seeing other images of Lygodium I am now not at all sure and am thinking maybe Sapindus? Obviously I am not great on the plant IDs I am not hiving great luck in finding a good paper to identify flora from this site. I was really hoping for something like the Daniel Axlerod papers which are very comprehensive. I do have one called "Fossils from the Green River Formation" by Dayvault and another called " Common Plant Fossils from the Green River Formation at Douglas Pass, Co
  21. PaleoNoel

    White River fm. Mini Claw

    Hi everyone! I found this claw while anthill hunting on the White River formation of northeastern Colorado. It's about 6 mm in length and 4 mm tall. Honestly I'm not certain that it's a fossil, but if it is I'm really excited to have found it. My first guess is that it's a small bird, but it could very well be mammalian or reptilian. Any input is appreciated.
  22. kodpkd

    Got wood?

    Found in northeast Colorado next to WY border. This looks like petrified wood but I have been fooled before.
  23. sharkysaurus

    What is this fossil?

    I found these two neat little fossils in La Junta, Colorado. I'm not sure what they are but I have two guesses what they might be: barnacles or fish scales. I think it's from the Morrison formation but I'm not 100% sure! Any help would be appreciated
  24. My family calls this a petrified egg, but a researcher called it fossilized (well, it is all speculative on what the heck it is). What would be the difference, or is that the same thing, fossilized and petrified? I googled it and it said there wasn't a distinction. Also looking for any info on what you think this egg might be, and wanted to share it with the community too. When I was growing up, once a year my mom would get out this petrified egg, and my brothers and I were allowed to hold it. It was always a very special treat! We would wrap a magazine around it, hold it
  25. kodpkd

    New find today

    If this is stone, it's very strange. Found in NE colorado near the WY border.
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