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Found 128 results

  1. Hi friends, I'm trying to learn more about Green River fish. Interested to know if anyone sees anything wrong with this fossil (repair, restoration, coloring/painting, composite). The color seems slightly darker to me than the typical Green River fish that I've seen but it's not dark enough for the 18 inch layer fish that I've seen.... so that's part of why I'm curious/asking. Thank your for your insights.
  2. Hello I'm a newbie fossil collector (and newly active member) who happens to several interesting fossils for a decent price from our favorite auctions sites 1st is are Knightia. The seller claims that they are not restored or enhanced 2nd set are 4 Spinosaurus teeth. The seller claims that cracks have been repaired, but no restoration or composition has been made (Pictures 2-9 of teeth in pairs) 3rd is a Lycoptera which the seller claims is not restored or enhanced 4th are plates of Elrathia Trilobites from Wheeler Formation 5th are Fossil Ferns from Llewellyn Formation 6th is a Hyracodon jaw fragment I would like to ask if the sellers' description of the items are accurate and/or if they are restored, enhanced or composites. Cheers!
  3. Ricky’s Field Museum prep

    Hey everybody! I realized I never made a thread for my internship at the Field Museum in Chicago this summer. I interned as a fossil preparator under Akiko Shinya in the McDonald’s Fossil Preparation Laboratory (that’s the “fish bowl” lab on the second floor right next to Evolving Planet with the big window). There were some amazing things being prepared in the lab - an Antarctic Lystrosaurus, lots of Dicynodonts, Green River fish (some massive Phareodus), Sauropod femurs and ribs, a massive slab containing several sturgeon and paddlefish - but I’m not sure if I am allowed to post pictures of them, so for the sake of confidentiality I won’t just in case. This is the lab, and I always sat in the red chair, right up next to the window. One of my favorite parts of this internship was seeing all the little kids so excited about what we were doing in there and interacting with them. I was preparing a Priscacara serrata (specimen PF 16961) from the Green River formation of Wyoming, Eocene (~52 mya). All I used was a pin vise and an Amscope stereoscope. This fish also seemed to have slightly “exploded” from the pressure of fossilization as well, it’s jaw was crooked and head smashed, thought most fins seemed surprisingly well intact. The prep took 199.5 hours to complete, from May to August. I finished the prep on the final day of my internship, staying late after the museum had closed to the public and all the others in the lab had gone home. But it was far worth it, because "your name will forever be associated with this specimen." -Akiko Shinya I took a picture at the end of every day and I made a time lapse with it to see the growth! The link is at the bottom of the post. (I kept that floating scale in front of its mouth because I thought it was kind of funny that it looked like the fish was trying to eat it!) You can watch the time lapse Here
  4. Hello Everyone, I am facing a bit of a dilemma. Husband is getting me a trip to go dig fossils for my 40th birthday!! Now, the dilemma of choosing where to go! My dream has always been to go to Green River formation for fishes.... however, here locally I am used to finding marine fossils only (North Texas), and another option would be to go with a certain Adventure group in South Dakota for some variety. I love prepping the delicate fishes, and think the Green River experiences would give more to take home with. Anyone here have any experience, or advice? I want TO DO BOTH!! Thanks in advance, Suvi
  5. Here is another update from my July 2019 solo Fossil run! (Edit...it appears some of the fossil pictures are displaying poorly....I will rectify this shortly.) PICTURE HEAVY Day 1: I drove solo from Omaha, NE to Fossil Butte National Monument. I left at 0300 local and made it to the Museum at the monument about 45 minutes before they closed at 1800 local. The museum is outstanding. Small, but amazing. Also, unlike most other national parks and monuments, it is FREE and open 7 days a week during the summer. I didn't take any photos as A, I was exhausted, and B, there are plenty of pictures of the museum already on the web. Sometimes, I like to just have memories I don't have to share. Anyway, after drooling over all of the great stuff to view (think complete two meter crocodilian skeleton), I got my second wind and had to find a place to camp before dark. Thankfully, you get about 18 hours of useful sunlight up in that area, so I set out for a "secret" campsite on the BLM land just northwest of the monument proper. I found the site and made camp. There was some promising looking shale exposed here, but not a fossil to be found. (I did bring a few samples back however as I discovered later that there was some interesting fluorescence in green, yellow, and orange on some of the rock!) I'm at around 2100 meters above sea level for the night! Either way, beat down and a bit light headed from too many years living in the flat lands, I caught a nice sunset and wolfed down four MREs. I planned to spend the next day in deep in the Green River Formation. Day 2. It was a rough night. I got about two hours sleep from a combination of exhaustion, excitement, and the strangest wind storm I have ever experienced. At right around 0000, a single gust of wind dropped the temp for around 22C to 8C in less than five minutes. I was prepared for this, however I wasn't prepared for what showed up 45 minutes later- sustained 40kph winds with 72kph gusts. Due to the hard rocky ground, I couldn't use tent stakes or bury the deadmen for my guy lines on the tent, so I spent the next three hours in a very noisy, semi-collapsed tent. As the storm continued, I realized I was going to have to set the guy lines under the tires of my truck if I hoped not to blow away. Imagine my surprise to discover that with all that wind, there was not a cloud in the sky. It was crystal clear out. What I had thought was rain hitting the tent was actually small bits of gravel! I carefully positioned the truck as a bit of a wind break and anchor for the guy lines. Ten minutes later, the windstorm quit. I made twelve cups of espresso in my trusty Moka pot and headed over to American Fossil Quarry at sunrise. I didn't bother taking pictures of the quarry as there are plenty on the web. I did a half day dig. I had a most excellent time. What follows is photos of about a third of the fossils I found. I have many many more that need prep work, but these were my "practice" specimens. I found so many fish fossils, I kept only the best ones, plus a similar amount to use as practice for preparation and preservation techniques. Sure, it is a pay-to-play quarry, but I got more than my money's worth I feel. I actually got a bit bored with finding fish, something I never thought would happen. I also found some scales and coprolites, but no stingrays or plants. One fellow digging while I was there ended up with a magnificent palm leaf however! Anyway, here are a few of the fossils I have prepped so far. Apologies for the less than perfect photos. I have only owned this macro lens for a few days and haven't quite figured it out yet. Also, you will notice that they appear shiny, this is because the fixative has not fully cured yet. I will share my best two specimens in other threads later on!
  6. Hi we are newbies, went to Kemerer and found a lot of fish, and a slab with a tree branch (about a foot long 6 " wide). YOu can see patterns of the bark, but it is very faint. I am not sure if we should remove the covering and see if there is a darker layer under the stone? As it was a fairly larger specimen it may be more 3 dimensional. Any Suggestions? Any one have ideas? (On the fish I have heard 1:6 and 1:20 diluted wood glue is that correct?
  7. Fossil Hash?

    I think I found tumbled fossil hash out near Green River, Utah (Jurassic?) and was wondering what exactly I did find? I appreciate all help! I have so many to identify... glad I found this forum.
  8. Douglas Pass Colorado

    Fossils found at Douglas Pass, Colorado this weekend. Seed?, Unidentified leaves. Shells. (Elimia tenera and unidentified clam). Plant fossils were found near the Radar Dome. The shells were found at a much lower level.
  9. Hey Gang, Was going thru another box and found a small piece that I acquired awhile back that I dont have a name for and looking for some help....if anyone has any ideas...much appreciated... Did some preliminary review of some of the Eocene pubs but nothing screamed yep thats it... From a quarry near Fossil Lake, Kemmerer, Wyoming. Green River Formation. Got some interesting fish bits in the plate as well... @piranha Thanks! Regards, Chris
  10. advanced wasp systematics

    Illustrating phylogenetic placement of fossils using RoguePlots: An example from ichneumonid parasitoid wasps(Hymenoptera, Ichneumonidae) and an extensive morphological matrix Seraina KlopfsteinID1,2,3*, Tamara Spasojevic2,3 PLoS ONE 14(4): e0212942. https://doi.org/10.1371/journal.pone.0212942 edit14/7:keywords added pone.0212942.pdf
  11. My new Fossil Fish

    Hello Everyone, I recently purchased a Phareodus encaustus from the Green River formation and it is currently in the mail. Just wanted to share it.
  12. Fossil Leaf ID Needed

    Thinking this may be a insect chewed on Bursera inaequalate ralis, any thoughts. Green River Formation.
  13. Well, I’m finally getting to dig into my truckload of fossils from my Wyoming trip with @RJB so it’s my turn to open up a prep thread. I spent a couple hours today poking around to find the perfect fish to start with. The 18” layer never disappoints. This good sized Diplomystus has 2 Knightia on top of it. I’m going to try to save both but I’m concerned that the right hand one is covering most of the Diplo’s skull. If that’s the case, the little guy will have to go! This is after about 90 minutes of scribe work.
  14. Fossil Leaf ID Needed

    Looking to ID this Green River fossil leaf if anyone has an ideas?
  15. Back in about 1992 or 93and for many years later and still to this day I took the whole family fossil hunting. I always made it a priority to take the family on a fossil vacation. I use to do 7 out of state trips for fossil hunting every year with one of those for the family and always in the last week of june or first week of July. Always had to wait for the kids to get out of school. Used to do trips that last up to 3 weeks. Ha! Now a 4 or 5 day trip is about all I can do. The misses doesn't go with me nowadays but I cant help it, I need to get out even if I cant do much because of this stroke. Ive gone on 2 fossil hunting trips already this year and still have 2 more to go. One to the Fox Hills Formation in South Dakota for more of those super nice and high quality ammonites and then my last one to Washington to get more crab concretions and to aquire more of those rare and most beautiful agitized Aturia!!! I used to keep everything but nowadays I only want quality and to grow the collection. Trimmin down some fish slabs Abssolutely LOVE this place!!! This creek changed paleo history!!! Was told that there would be a dusting of snow and a bit chilly. It got down to -12 degrees and got 4 inches of snow that buried everything!!! and yeah, we camped in that weather. I didnt see it then but now I can see that I was one of the tuffest dudes alive!!!! This was after the -12 degree night and I had to trim all the fish slabs. once in the truck with the heater on my fingers and toes were numb and then came that god awfull stinging when they thawed out. Lots of pain but came home with lots of fish! This is back when I thought split fish were cool. Not so anymore. Just too spoiled now but sure had a heck of alot of fun back in the day!
  16. Well,, it was just a couple of weeks ago when I was out on a fishing trip to the Green River Formation. We were invited back to the almost unknown 'Phareodus' layers!!! Very tuff layers for sure. We had to use special chisles for these layers along with the normal thin shims used for the 18 inch layers. We didnt end up with very many Phare's, only 2 but the boys did get some purty good B-Grade Phare's!!! What we did find was quite a few small diplo's and small Mio's in some very very nice high quality preservation. The one thing was,,, just how many small good preservation Mio's does one see? These are almost rare. What struck me also was the difference in the layers here! From one layer to the next can be completely different! Some of it was super nasty rock and had travertine on it. You find a fish in this travertine you simply toss it aside. That hurt! When the sun went away we had to go dig the 'mini' layers. The mini layers are very much like the split fish layers but you can get some really good hard layers there and you can also find some big fish there too along with the 1000's of little Knightia's. But the sun came back and again we dug the Phare layer. The boys also did some night fishing with lights in the famous 18 inch layers but only lasted about 3 hours. Still, some nice little prisci's for their efforts. It was also very cold! First morning was 32 dgrees. Tons of wind too and the second day destroyed out tent!!!!! Im gettin old and can do without the cold and wind, but for those of who know, after almost 14 months with this stroke I was for the first time able to actually do some work and for some hours. Quite happy to say the least about that!!! and even though I payed for that the next day, for me, it was Fantastic. And today, just one day after getting back I was able to unload almost all the fish, get them squared up with a square and pencil and now having a very deserved whisky and writing this! Wooooooooop Woooooooop!!!! I will pay for this tomorrow but I dont care. Ive always love getting out and fossil hunting and camping and its now finally gettting a tad bit easier. Here is my little set up before it got desroyed the next day!!! Here is a large Phareodus with some of the head missing from the 'mini' layers. The very first rock my middle son lifted. This fish is upside down. Had to build a wind block so we could have a fire for cooking baked taters with onion garlic and a slice of bacon. Makes for one heck of a baked tater!!! and some New Yorks too!!! The boys working the famous 18 inch layer. You can see in the lower left of this photo the small pad of the unknown Phareodus layer. Here is a small but very high quality Mioplosis from one of the 'Phareodus' layers! Im super excited to get these!!! To say the least!!! This fish, Diplomystus is one of the most awesome ive seen. Just fatter than a pig!!! Sad to have the tail end missing!!! This fish came from the 'mini' layers. If this had a tail I would have paid some serious moneys for it!!! Just check out the anal fin!!!
  17. Muddy Wyoming Fish

    FYI @Ptychodus04 @Kittenmittens @mamlambo @Fossilis Willis @Malcolmt @DevonianDigger Well managed to get out last Friday to dig up some Green River fish from the split fish layers. These layers aren't nice and hard like the 18 inch, nor are the rarer fish as obtainable (they don't preserve as well), but you can still find some pretty cool stuff. A family next to me found a foot long Phareodus in perfect condition with a dark red color (forgot to take a picture of that). I don't think they realize just how lucky they are because those are not easy to find. The night before it rained a ton so I had a hard time getting to the quarry. The oily lime based rock wouldn't split properly until about noon but I hauled some decent Knightia's out. These aren't your prized, rare, fish but they are still a blast to dig up. Pulled out about fifty and worked all day. With all the mud and rain I seriously didn't think anyone would show up but Friday was very busy. About fifty in total came. The morning was tough. Lots of muddy rock to split and it just didn't want to split evenly. Everything would crumble on me. As you can see in the picture below things were muddy and wet. This Knightia has some pretty nice curves. Another curvaceous fossil. I'm in love. The split fish come in their varieties. Usually I only keep the ones that are completely filled in then put a sealant over them. This one looks alright considering it's a bit patchy. This one will be fun to prepare with my new CP9361 and some very careful handling of the scribe. This is one of my A grade Knightia's from the trip. Great color. The tail can be teased out a bit more. I really like how the vertebrae pop out in a 3D manner. Keep on fossiling!
  18. ?? Bone or just interesting rock?

    Didn't pay much attention when I picked this up, just noticed it was interesting. It was a surface find and I guessed I would figure it out later. Any ideas? Found this somewhere south of Wamsutter, WY.
  19. I am headed to Kemmerer with my son to look for fossils. I am aware of the quarries in Kemmerer and want to know if there is anything that we should not miss on our road trip or around the area. We have 5 days to explore. Thank you!
  20. Fossils from the new guy

    I'm brand new to Fossil Forum, and can't afford the big splashy wall display fossils, so my "collection" is modest, but it's a start. I have three of these fern plates from St. Clair, PA, and two diplomystus fish fossils from the Green River formation in Wyoming.
  21. Hi all, I have been searching through posts in the forum about various types of abrasives, and I can't seem to find a comment anywhere where someone breaks down the pros/cons of the different forms of abrasive and their microns. Of course I realize everyone has their own preferences, I am just confused as to the objective benefits of what looks like the three main types of abrasives: dolomite, aluminum oxide, and just plain baking soda (besides the fact that baking soda is more delicate.) The Paasche Air Eraser comes with 240 micron aluminum oxide, but that seems to be a little extreme for fossil preparation, is there an appropriate time and place in which I could use that? What would be the max (or even a general range) micron of either dolomite or aluminum oxide that one would recommend I use for 1. Green River fish, 2. trilobites, 3. ammonites, or 4. just general fossil clean-up?
  22. Are these replica or genuine fossil? They look like the same.
  23. Help With Green River Bird Leg

    I purchased a fossil collection several years ago that contained a beautifully preserved bird leg with some feathers preserved. It is was collected in the Green River Formation of Southwestern Wyoming. I know very little about fossil birds and am hoping someone on the Forum might be able to narrow the ID down to what family of bird it might be. Any Help will be greatly appreciated.
  24. Green River Fish Painting

    I bought a small set of paints recently in a medium I had never used before, gouache. It's a lot like watercolor, but more opaque. I've always liked the look of watercolor but I've been more comfortable with acrylics. I thought I'd give the gouache paints a try, and I think I'm going to like them. Here's a Knightia I painted today, with an attached fossil Knightia. At least I think it's a Knightia. It's not preserved terribly well. I'm planning on painting some more knightia, probably a school of them, then a Diplomystus and maybe move on from there. It should be interesting.
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