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  1. 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
  2. BellamyBlake

    Torvosaurus

    I have here a theropod tooth tip from the Morrison Formation of Moffat County, Colorado. It's 1/2". The claim is that it's Torvosaurus based on the serrations. Is that a definitive way to identify this as Torvosaurus as opposed to another theropod? @Troodon Thank you, Bellamy
  3. HuckMucus

    Plant or?

    I found this on my place which makes no sense. I'm on a whitewater mountain river with gravel, rocks, boulders (granite). Most non-granite rock comes down from above and it's worn. This doesn't appear to be river-tumbled. The thing in it caught my eye and reminds me of wood but I'm not sure. Any ideas?
  4. HuckMucus

    What should I look for?

    I'm thinking on a trip to a spot where I saw a bunch of sea shells south west of La Junta, Colorado. I'll be prying rock layers apart looking for stuff that strikes my eye. However, is there anything in particular I should be looking for that would be a real score? I think the picture is the stuff if I have my dates right. Thanks.
  5. PaleoNoel

    Florissant Leaf- Cedrelospermum?

    Hi everyone, I wanted to confirm the identity of one of the leaves I found in Florissant, CO back in 2017. At one point or another I saw the genus Cedrelospermum pop up on here or instagram associated with a leaf which caught my eye in its similarity to my own. I would be interested in seeing your opinions. compared to images I found elsewhere online
  6. HuckMucus

    Fish Scales

    I know there is not enough to ID but thought I'd share. I used to hike the oil shale cliffs behind the Job Corps Center out of Colbran, Colorado, back in the 70s. The size of the scales on this fish were such that I knew it would be a keeper if I caught it. The oil shale there is such that you can actually light it and it burns. (The little one on the right I found out of Eden, Wyoming, sometime in the 80s).
  7. Billymachi

    Animal or Vegetable?

    This is a rock shop purchase. The owner is an expert in dinosaur gembone from the Morrison. He also deals in Hermanophyton ferns, etc so he also knows a bit about paleobotany. But this piece was a mystery to him. Its very well agatized and the fine details are preserved. At first it looks like a limb cast. The exterior is coarsely wrinkled, like bark. The cross-section does not preserve a convincing ring of a bark layer, but there is some kind of concentric character. It has some characteristics of a limb bone. The geometry and size fit that t
  8. Amanda88

    Coral in Colorado?

    I found this in my backyard. Is it fossilized coral? western Colorado
  9. AZPetrifiedForest

    Colorado dinosaur vertebrae???

    Hi guys, I found this dinosaur(?) vertebrae in a Phoenix, Arizona antique shop all by itself in a dusty, dark corner. I wanted to give it life back and purchased it for a bargain price. It was only labelled "Colorado dinosaur bone". To me, it looks like Morrison Formation material based on its surprising, beautiful color. Maybe sauropod or stegosaurus??? I know it's really worn, but it has a great shape in person and very heavy for its size. Talk about size, it's 7 inches long and 4.5 inches tall even worn down this much! Any help identifying it would be awesome! Thank you!
  10. Top Trilo

    Florissant insects.

    Nothing has been said in the Colorado section for almost a year now so lets kick it back up. A little over a week ago I posted some pictures of florissant stuff in the I.D. section. I got a lot of good help and then for the ones we couldn't figure out I tried searching for some that are similar but there's not many different photos online from florissant. I was wondering if anyone could help or if someone knew the florissant formation really well.
  11. CBDeMiller

    Petrified snake from Colorado?

    I inherited an interesting rock/fossil from my father and wondered if it was an authentic petrified snake segment. He was a physician, and received it from one of his patients back in the 1970's. The patient was a fossil/rock hunter in the Colorado region and said it was from the area. Those are all the details I have. Are there really fossilized snake segments like this around? It appears to have a segmented outer casing of 2-3mm around the whole piece. A circular (spine?) runs through the length of the piece on one side. The interior is fully crystalized.
  12. Dear Fossil forum members, I have recently acquired this bone. It is said to have been found at Mack, Colorado. I suppose it is from the Morrison Formation. The previous owner thought it might be a Stegosaurus neural arch, but now I have it in my hands I see more similarities with a supraoccipital. Especially these: (Eolambia, A and C) https://peerj.com/articles/1872/ (Fig. 12, A. Eotrachodon) https://www.nature.com/articles/s41598-019-41325-8 (Fig. 2, Q, R, S, T and their other sides, unknown hadosaurs) seem similar to me.
  13. Opabinia Blues

    Fossil Tooth Tip Restoration?

    Hello, I have a large canine tooth (~14 cm with the root, ~6.5 cm with just the tooth) from the White River Formation that I collected this summer on privately held land in northeastern Colorado, and though the fossil in its natural state is fantastic as-is I’m thinking about doing a little bit of restoration on the fossil and am looking for some insights. The tooth itself is from either an entelodont or the rhino Metamynodon, with the shape of the tooth and root strongly suggesting the latter to me (feel free to speak out if you have an opinion one way or the other, though I’m not
  14. I'm curious if anyone recognizes these structures. Found in Denver Basin, near fossil wood deposits. Lattice like structures, almost like giant ommatidia. Maybe a seed? Ticks in blurry scale are mm. Host rock is almost creamy, like chert/opaque agate. Thank you!
  15. aper

    Trace cloven toe half?

    I found this in quaternary alluviums but near a spot with a confirmed vert fossil find. It looks to me like half a cloven toe, but the mineralization seems sketchy. What do you experts think? Could it be a trace, like mud-filled footprint or is it another pseudofossil!? Thanks for humoring me!
  16. Top Trilo

    Petrified Wood Confirmation please

    Pretty sure this is petrified wood can you confirm this. And then the little hole on the one side is deeper than it looks in the picture (about as deep as it is wide) is there anyway to say if this was caused by erosion or from something living before fossilization
  17. Back In Time: Fremont County farmer discovered multiple dinosaur fossils in Garden Park https://www.canoncitydailyrecord.com/2020/11/22/back-in-time-fremont-county-farmer-discovered-multiple-dinosaur-fossils-in-garden-park/ https://www.newsbreak.com/news/2107473763723/back-in-time-fremont-county-farmer-discovered-multiple-dinosaur-fossils-in-garden-park Carpenter, K., 2002. Guide to the major dinosaur sites near Cañon City, Colorado. Trilobite Tails, 19(3), pp.7-17. https://www.researchgate.net/publication/314891708_Guide_to_the_major_dinosaur_sites_near_
  18. Since I live so close to the famous Morrison Formation I thought I would start doing some research on what it's like to fossil collect in it because I'm seriously considering finding a way to gain access to some private land and do a little bit of collecting. I have heard it said once that the rock of the Morrison is hard and requires special tools to dig in, and that consequently it's impossible to prospect for fossils in the Morrison the same way you would in, say, the Hell Creek Formation. How true is this? Is the only way to fossil collect in the Morrison to be in a quarry? My
  19. I found these pieces today, the one on the left is wood but unsure if it is petrified or not, it sinks but that might be because rocks are attached on the other side, I could light it but I’d prefer a safer method. The one on the right is most likely a rock but I find the shape strange like maybe a piece of petrified branch? Thanks for the help
  20. Somethingwicked

    Rocks or fossils?

    Hey all, I'm brand brand new to the fossil world. As in, went out to try to find fossils (on a legal collecting site) yesterday for the first time after a bit of reading. I'm in Colorado, and I was looking in an area that is known to have a lot of fossils and there is a lot of erosion exposing different layers. But I really don't know what I'm looking for. I presume all of what I found (or at best, most) is just different coloured rocks (the black spots maybe oxidation from iron content?) but how can I tell fossil from rock? So I thought I'd post some of what caught my attention he
  21. Jdeutsch

    mancos shale

    Mancos shale outside of Grand Junction Colorado 2 inches in length
  22. aper

    Scapula? Other? Pareidolia?

    Over the course of 4 trips to an alluvial outcrop in the Denver CO area I found these fossil-like pieces that ended up fitting together. No idea what it is. Would love expertise opinion. I found a fossilized cochlea near here so think it's a fossiliferous area. Also lots of fossil wood in the patch. Tertiary?
  23. buffs5

    Fossil Bone Fragment ID

    I wanted to see if anyone could tell me what animal this bone may have come from. Probably a shot in the dark for a bone fragment but I thought I'd try anyways. I found this on the shore of a reservoir in Westminster, Colorado which is a suburb of Denver. I've also found petrified wood in the same area. Let me know if any other info would be helpful for an id. Thanks.
  24. Turbidturtle

    What dinosaur does this bone belong to?

    Morrison formation, Jurassic period, grand junction Colorado
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