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Found 97 results

  1. My wife and I just got back from a week’s driving tour through Nevada, Utah, and Wyoming. We stopped in at American Fossil Quarry outside of Kemmerer, Wyoming, for a few hours to dig for Green River fish. It was a productive day, and we both bagged some nice finds. Seth, the owner of the quarry and a TFF member, wasn’t there that day, but his assistant, Nick, was very helpful in getting us started. I brought a bag full of tools which were mostly unnecessary. As Nick pointed out, all you really need is a brick hammer and a thin chisel, both of which they provide. I noted that since this was the end of the season and the chisels had undoubtedly seen hard use all summer, they had pretty blunt tips. I had brought my own set from Geo-Tools (http://www.geo-tools.com/fossil-rock-chisels/custom-thin-rock-splitting-chisels) and found the 1/16-inch chisel with a single bevel was particularly useful. My wife used the chisel they supplied and was quite successful. The floor of the quarry was covered with a fine powder of shale. We worked for 3 hours before the wind picked up and started blowing the powder around so much we decided to call it a day. Nick loaded our fossils onto a cart and took me over to a line of saws that can be used to get rid of the excess matrix and trim the specimens down to a reasonable size. After a quick tutorial I was happily working on my own trimming down all my specimens. I noted the saw was a Chicago Electric 10”, 2.5 HP tile saw like they sell at Harbor Freight: https://www.harborfreight.com/10-in-25-hp-tilebrick-saw-69275.html. But the blade was definitely much better than you can get at Harbor Freight. It was a 10” blade designed for dry cutting without the need for water. I was very impressed with the saw and wouldn’t hesitate to buy one from HF if I had enough need for it. But I’d look elsewhere for a top-quality blade. About 10 years ago we had visited the Warfield quarry across the road, and they had us digging right up against the rock wall where you could either split loose shale or extract your own shale right from the wall (which was a bit of a chore even at my then-younger age). At American Fossil Quarry, they extract the shale for you with a giant excavator and lay it out in rows of piles for you to access. Probably a lot safer than being right up against a crumbly rock wall. You don’t get the chance to record exact location and orientation of the fossils in-situ, but unless you are a professional paleontologist you won’t care. As Nick said, this is a commercial quarry, not a scientific expedition. The fun is in finding the fossils, of which we found plenty, even in the space of only 3 hours. I’d strongly encourage anyone to stop in at this quarry. The dirt road is reasonable for the family car right up to the descent at the quarry entrance. It’s then a bit of an adventure if you don’t have 4WD (which we fortunately did), but at the bottom there were even large travel trailers that had made it down safely. Be sure to mention that you are a member of The Fossil Forum and they will give you a 10% discount. Here are some photos of a few of our finds. My ID’s on them are tentative, so if anyone has any corrections, please let me know. Full collection after trimming: Mioplosus labracoides: Diplomystus dentatus: Small Diplomystus: Diplomystus needing more prep:
  2. Show Us Your Green River Fossils!

    Hey everyone! I recently started planning a trip out west for next summer and was thinking of going to the Green River formation. One of those "keep all you find" digs. Thought it would be cool to see some fossils from there that some of you may have found. Or even some you could have purchased. Thanks!
  3. Knightia Prep

    I’m now prepping what appears to be a Knightia that I received from @RJB. Apparently, this fish came from the diamond layer of the GRF. Here’s what it look ones like to start:
  4. Could anyone PM me somewhere where I could purchase unprepared Green River fish? Thanks in advance
  5. Green River Coprolite?

    I recently purchased this Green River Knightia plate at an incredibly cheap price. I got it because of what I was pretty sure was some coprolite on the back. I am sure you know more about this stuff than I do- so was I right? Also is that bone infront of the fish? Thanks!
  6. Fish IG.jpg

    From the album Priscacara

    Vaniman <a href="http://www.yahoo.com">Vaniman</a>
  7. Fish and Snail

    Acquired two new ones today, nothing heart-stopping but just nice to have (and a change from trilobites). * A 6ish cm Knightia eocaena * A plump, mature Platyceras from Sylvania, Ohio (close to golf ball sized).
  8. Fish scale?

    I have not the slightest clue what this is. The seller never mentions anything about it. My first guess would be a fish scale but it's quite large. The whole thing is about an inch in diameter. From the green river formation.
  9. I was fortunate enough to be able to visit the American Fossil quarry in Kemmerer Wyoming this past week and had an amazing time. @sseth and his business partners do an incredible job running the quarry and made my experience there a memorable one by giving me the opportunity to find some beautiful fossils over the two days I was there. These finds include a nice Mioplosus, a beautiful Phareodus and dozens of Knightia. I highly recommend the American Fossil Quarry and I am looking to make a second trip back this next summer. Below-Mioplosus Below-Phareodus
  10. GR fish ID

    Hello! I'm super happy because I just finished my first self-prepared fossil fish! My original thought was Diplomystus, but as I finished the prep job I became suspicious it was a Knightia, possibly K. alta. just wanted to know if anyone could help me with the ID, and any help would be greatly appreciated!
  11. Green River Fish

    Hey guys!! My UPS box of everything I brought back from my pay-to-dig trip in Wyoming came in today!! Here's what I ended up with fully unboxed. I brought home a bunch of half fish to work on my preparing skills before I tackle the complete ones. The last two big pieces at the end measure 24x18 approx and have 6 or 7 fish on them. I'll take more pictures of them tonight as I un(bubble)wrap them.
  12. The Green River Formation is one of the most well-known fossil sites in the world, occupying present-day Colorado, Utah and Wyoming. This Lagerstätte has been noted for its well-preserved fish fossils, as well as numerous invertebrates, plants, and sometimes even reptiles and birds. Green River fossils are Eocene-aged, at 53.5 to 48.5 million years old. Thankfully, not only are Green River fossils attractive, they also remain affordable to the casual collector. Allow me to present my humble collection. Crocodile tooth Borealosuchus sp. Southwest Wyoming Water bird tracks (possibly sandpipers or plovers) Presbyorniformipes feduccii Vernal, Utah Bird feather Aves indet. Southwest Wyoming Crane flies & Mosquitoes Pronophlebia rediviva & Culex sp. Parachute Creek Member; Douglas Pass, Colorado
  13. Are these fish genuine? Any painting? They are said to be from the Green River Formation.
  14. Juvenile mioplosus?

    Hello. I did a double take when I saw this Knightia alta for sale. I see this fish has a pair of both dorsal and ventral fins. I'm thinking this may actually be a Mioplosus, but it could also be a priscacara but I'm not really sure. Would anyone have any idea what it is? P.S the picture quality is aweful, but it's the only picture the seller has posted.
  15. Hi, the two specimens shown below are said to be from the Green River Formation. I am not sure what species they are and if they are painted. Any advice would be much appreciated.
  16. Tiny little fish

    A nice surprise happened last night as I was putting my best fish finds away from a trip to Sseth's quarry in Kemmerer, Wyoming last summer. I accidentally dropped a nice Knightia and while piking up the broken pieces, this is what was hiding inside!!! Almost didn't see I due to the tiny size. Any thoughts to species??
  17. A new, distressing sight.

    I've heard of situations like this. This is the first time I've seen it in my feed: https://www.audubon.org/news/paleontology-and-private-fossil-collecting-can-be-odds-hills-wyoming
  18. Gone' Fishin

    Figured I'd share my current project here. I'm currently testing different sandblasting media and their effect on various matrices since this is a somewhat new application for us at Vaniman. The picture is an almost-finished Green River Fish that's roughly 4" x 2" in size. I will be doing a full-scale article regarding the entire process but wanted to share some of the work with you all for fun. I have a lot more pictures so if you're interested- let me know. It's only letting me upload one (?)
  19. I was looking through some GRF insects that I had, and wondered if anyone had an ID for this one? I am mostly familiar with insects from amber inclusions, so it is a bit different looking at them on rock. Some options I thought of were a species of beetle, caddisfly, or maybe a cicada? Any information would be great!
  20. Tiny fish ID

    Hey everyone, these are not my photos but ones from a listing on a popular auction site. There isn’t any info given about the fish, other than that they are a pair and weigh 35g. They look to be from the Green River Formation, but I’m not an expert so if you have a different idea, I’m all ears. My main question, however, is if anyone can identify the species? Judging by the coin size, I’m estimating that the size of the slab is about 4cm high and 6-7cm long. Any ideas would be appreciated, thanks!
  21. Air abrasive on GRF Fish?

    I have heard of using an air abrasive for GRF fish, but haven't been able to find any pointers on how to do it. Is this a safe method of matrix removal? I have one slab I am working on now (first try on a fish) and have been thinking of getting some more 18 inch layer fish to prep if I can. I am guessing you would use bicarb versus dolomite. If you do use this method, any pointers on PSI, and overall technique, when to use, when not to use? So far I have just been very sporadically working on it with an Aro. Nathan
  22. The Winter 2017 issue of Fossil News is a special focus on Kemmerer, WY — the Gateway to PaleoTourism, USA — the Fossil Basin area; the Fossil Butte Nat’l Monument; Dig-Your-Own quarries; and much more. There was so much great content that we added four additional pages to the issue! · In the Beginning: An Excerpt from Lance Grande’s The Lost World of Fossil Lake · A Photo Gallery of Specimens from the Extraordinary Collections at Fossil Butte · Kemmerer Area directories: Rock & Fossil Shops, Dig-Your-Own Quarries, and more · A Visit to the Westmoreland-Kemmerer Coal Mine · Discovering & Photographing Ostracods in Eocene Green River “Turritella Agate” · American Fossil: The “Education Quarry” · A Monitor Lizard from Green River The Find of a Lifetime · SVP to Sue to Block Reductions to Grand Staircase & Bears Ears National Monuments · and more! Get your copy or subscribe: tinyurl.com/fnsubscribe. From now until the end of the 2018 Tucson shows, mention that you saw this notice on Fossil Forum and get the trade rate of $44/year (instead of $50).
  23. Hello everyone, A geologist friend of mine roped me into his love of all things ancient, so here I am new to the fossils, and new to the Fossil Forum. I received my first Green River fish slab yesterday and spent most of the day on and off working off the layers with dental scaler that I've used for in the past for Roman coins. Must say that this matrix is much easier than the stuff encrusted to the coins! So far I'm pretty happy with the progress, but am looking for advice on how far to take this so that I don't overwork the piece. Here are a couple of photos of the progress. Note the series of three stages use lighting from the top to highlight the 3D effect of the specimen. The other photo uses light from the lower left to show a more natural visual look if you just look at it laying on the table. I believe I still have a lot of detail work taking off sediment between the bones and along the spine, etc. Any advice on around the head and eye socket, the border? How about surface finishing? If the slab is dampened, the fish stands out more, so would a mat clear coat of something be a reasonable finish, or should I leave it alone? I believe I read that a 20% solution of white glue in water might create a good effect. Any experience with that? Again, there seem to be many schools of thought. Thanks in advance for your help. Also, I believe this is a Knightia, but wouldn't mind confirmation from someone in the know. The fish is almost exactly 4" head to tail. Again, thanks.
  24. Moving away from Trilobites, I wanted to try my hand at a fish. This is my rendition of Priscacara serrata, a common species of the Miocene, in the Green River Formation. The fish looks like a Perch, or a Bass, because all three are in the Percinae Family. Priscacara is an extinct member.
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