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Found 86 results

  1. 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.
  2. 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
  3. Are these fish genuine? Any painting? They are said to be from the Green River Formation.
  4. 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.
  5. 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.
  6. 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??
  7. 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
  8. 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 (?)
  9. 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!
  10. 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!
  11. 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
  12. 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).
  13. 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.
  14. 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.
  15. Sycamore leaf?

    I have a nice little leaf fossil. I just wanted a quick ID on the species and time period it is from, if possible. It is from the green river formation. I was thinking Macginitiea wyomingensis? Thank you!
  16. This is a huge announcement I have to make. It has been under wraps for quite a few months now and some of you may recall my damselfly find from the July 2017 Fossil of the Month contest. Well a HUGE thanks is in order for @oilshale for pointing me in the direction of one of his friends to help identify this beautiful specimen. Turns out this is not just a new species, or even genus, but an entirely new FAMILY that will soon be published!!! This damselfly will be labeled as the type specimen (Holotype) for the Family, Genus, AND Species. I donated this beautiful bug to my friends over at Fossil Butte National Monument where staff has been working to catalogue and name many of their unidentified insect specimens. This Damselfly will be a great addition for them as they build a new exhibit focused on insects of the Green River in the next year or so. This bug was a very special find for me, and knowing that it was going to be the type specimen adds even more to it. I haven't been able to post this in part because it was meant as a Christmas present for my wife. She was speechless to find out that the species will be named after her. I have no idea how I will ever up myself from this, but here's to trying. This has definitely been a highlight in my fossil career and I can't imagine ever finding another type specimen. I am happy to know that you all will share in my excitement and when the paper is finally published I will make sure to share it here as well! Attached is a copy of the letter from Fossil Butte National Monument, edited of course, and if you read it you will see why!
  17. Cleaning a fish

    I got an unprepared fish fossil from my grandparents as an early Xmas present, and I've been working on cleaning it up. This is what I have after a few hours' work. I've been using the dental scraper pictured, mostly just trying to find the general outlines of the body so I can figure out what species this might be. Thing is, I'm a bit confused. The area above the cleaned area to the left is where the head is supposed to be, and you can see raised areas that seem to indicate the structure of a skull, but I'm finding what looks like skin way past that. I also don't seem to have any ribs yet. What's going on? Could the skin somehow have come loose and been moved?
  18. I will be going to Utah in a few weeks. I will be spending about a month there and will have time to get out and fossil hunt. Are there areas of the Green River Formation that are open to fossil collection?
  19. Douglas Pass Mystery

    I have another Douglas Pass mystery. I kept all the pieces that I could find not knowing what it was. I am really confused as this does not look like plant material to me. It almost looks scaly like a fish or lizard, but I can't really identify any parts that would lead me in any direction that would really suggest that . Interested in any info or speculation. Thanks Oh. And this as about 6" long
  20. Utah Ammonite Help

    I found what appears to be a small (1 cm) ammonite in Green River, Utah back in 1993. Anyone have any idea what genus it is? I don't know the geologic horizon I found it in but looking at a geologic map of the San Rafael desert, it's probably Cretaceous. I do remember it's from the East bank of the Green River, near the Old Highway Elgin Road. Matrix appears to be limestone if that helps (reacts vigorously to acid). Thanks for the help.
  21. Green River Fish contents

    I had the time of my life at Seth's Quarry this summer. Everyone should experience what the Green river formation is like. Here is a 8 inch fish that I am curious about. Look at the enlarged picture of it's abdomen. I have white dots on the structures to be identified. My guess is intestinal contents, but maybe release of coprolites as the fish died, or I am even considering eggs???? Eggs are a long shot but it doesn't hurt to ask!!
  22. As above. I am considering getting a Green River fossil. The slab is much bigger than the fossil, so I intend to cut it down. However, the seller declined to cut it, saying it was a thin slab, and he feared cracking into the actual fossil. Has anyone here done prep work on GR fossils? Can I use a hand saw, knives, or scissors to cut down thin-slab Green River fossils? Or are there other methods you would recommend?
  23. Framing a Green River Fish

    We are back home now after being evacuated for a week because of the wildfires around Santa Rosa. Before we were evacuated I had started working on a Christmas gift for a friend who likes my fossils but is not a dedicated collector. In searching through my collection, I found a Knightia eocaena fossil fish I had dug from the Split Fish Layer near Kemmerer, Wyoming. It’s not the greatest specimen, but since I had both the part and counterpart I thought it might be interesting to put them together into a single frame. I thought I would fill you in on what I did. Original fish slabs The first thing was to cut both slabs into identically-sized rectangles using an old tile saw I once picked up from Harbor Freight. The next step was to figure out how I wanted to frame them. To do the design, I used PowerPoint to create various size rectangles into which I pasted JPEGs of the fossils. After a bit of experimentation, I came up with this design I liked. PowerPoint design of framed fish Since the design didn’t fit within a standard commercial frame, I needed to construct my own. I started with ¾” pine corner molding I picked up at the local Home Depot for $0.78 per foot. I bought 8 feet worth so I had plenty of extra in case I made a mistake. I used a small miter box to cut the 45-degree angles on the frame pieces. While the cuts were pretty good, I knew they wouldn’t be perfect. So I made each piece slightly longer than necessary and used the disk sander on my Harbor Freight belt sander to sand the edges flat at the correct length. I used a 45-degree triangle to set the guide so I got a perfect 45-degree angle on the sander. Next, I glued the frame together using wood glue. I picked up two corner clamps from Harbor Freight (notice a trend here…) so I could glue two sides together at a time. Once the glue dried I removed the clamps and used them again to glue the two halves together into the final frame. To paint the frame, I used a can of spray paint in my custom-designed spray painting booth. Custom designed paint booth built from materials in my garage. Note it is obvious I live in wine country. I considered several options for how to mount the fossils in the frame. I finally decided to cut a piece of ½” plywood so that it just fit inside the frame. Then I used my Harbor Freight scroll saw to cut out two rectangles just the right size for the fish. I glued the fish into the plywood using Duco cement along the edges, making sure the fronts of the fish slabs were flush with the front of the plywood. The next step was to cut a window mat out of mounting board that would fit between the plywood and the frame to give it a finished appearance. To get the desired orange color I took ordinary white mat board and glued a sheet of colored artist’s paper onto it. I have a Logan Compact Mat Cutter that I use to cut mats when mounting my photographs. It wasn’t designed to cut such small mats but with a little creativity I was able to make it work. You can see all the lines I drew on the back of the board showing where to make the cuts. I also cut a piece of 1/32” clear acrylic to fit between the mat and the frame for protection. The fossil slabs were too thick for the frame and I needed to thin them down. So it was back to the Harbor Freight belt sander. Although I had never tried this before, I figured the matrix was soft enough that the 80-grit sandpaper would make short work of it, and besides, the sanding belt would be inexpensive to replace if necessary. As predicted, it worked fine. Finally, I cut a piece of ¼” red oak I had laying around to serve as the back, painted it the same color as the frame, added a sawtooth picture hanger, glued a laser-printed label on the plywood, and screwed it all together. Here is the final result: It was such a fun project I decided to take the same approach to construct a homemade version of a Riker mount:
  24. Priscacara?

    Found this for sale, green river fish that has been placed in plaster for some odd reason. It looks to me two have two knightia and a large fish that is headless. It was not identified in the listing, it looks like a cockerellites or priscacara to me but I know nothing about these fish (if it is what I think it is its way underpriced so I'll buy it). Also, is there any restoration apart from the wierd plaster around it?
  25. I was fortunate to be the winning bidder on a rolling auction lot of two Knightia eocaena, one prepped and one unprepped, generously offered by @FossilDudeCO to benefit this awesome forum. It took me awhile, but I finally finished the prepping of the unprepped fish, and I wanted to share it here. These rolling auctions are nearly always great bargains, and the best part is they all help to keep the lights on here at TFF. Here's a link to the original posting for these Knightia. Here's how it began: And here's the result of my novice efforts (this was my second attempt at prepping a fish from the 18-inch layer): I'm happy with the way it came out and I'm proud to give it a little space on my crowded shelves. Thanks, Blake! I didn't keep track of the time it took, probably about 15 hours, more or less, with my "primitive" tools. I started with a dental pick, but this fish was already so close to the surface I didn't need to remove a whole lot of matrix. Most of the prep was done with a sewing needle held in a mechanical pencil, at first, and then in a pin vise of sorts. Actually it was an X-acto knife handle. I took lots of photos along the way, with the idea that I might turn them into an animation someday, but getting everything to line up properly might be more work than I want to tackle. I greatly enjoyed the whole prep process, and I'm looking forward to another project. I'm sure it's much slower than and air abrasive system, and not quite as "finished", but I do prefer the peace and quiet of the pick and needle. I wouldn't want to tackle a monster fish that way though! Mike