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Found 43 results

  1. Idaho Dinosaurs: They Dug Their Own Graves

    Idaho Dinosaurs: They Dug Their Own Graves Geologists of Jackson Hole Lecture by L.J. Krumenacker Krumenacker, L.J., 2017. Osteology, phylogeny, taphonomy, and ontogenetic histology of Oryctodromeus cubicularis, from the Middle Cretaceous (Albian-Cenomanian) of Montana and Idaho (Doctoral dissertation, Montana State University-Bozeman, College of Letters & Science). Krumenacker, L.J., Varricchio, D.J., Wilson, J.P., Martin, A. and Ferguson, A., 2019. Taphonomy of and new burrows from Oryctodromeus cubicularis, a burrowing neornithischian dinosaur, from the mid-Cretaceous (Albian-Cenomanian) of Idaho and Montana, USA. Palaeogeography, Palaeoclimatology, Palaeoecology, 530, pp.300-311. More dinosaur papers Yours, Paul
  2. Belated 2019 Road Trip Fossils

    Last year, to celebrate finishing my undergraduate degree, my girlfriend and I went on a long (9,000+ mile) road trip around the western US and at long last (a little over a year since their discovery) the last of the fossils we found are out of the refrigerator and I’ve finally gotten all of them photographed. Here are some of the highlights and best fossils we found. A rough map of the route of the trip While the trip wasn’t entirely fossil centric we wanted to hunt at a few cool spots along the way. We chose to visit 5 fossil locations, the first of which was Clarkia Fossil Bowl in Idaho, a fantastic location for Miocene age leaves (Langhian Stage, ~15Mya) tucked behind a motocross track. These poor fossils have been through it all in the year between when they were found and when I finally got them dry. They’ve been soaked several times, gone mouldy twice, frozen at least once and flown across the Atlantic Ocean, all before spending the last 8 months in the refrigerator. Amazingly all but two of them survived perfectly including one of my favourite finds, a tiny flower. A maple leaf (genus Acer) still partly covered in matrix but with the stem intact. At some point I hope to get this one prepared. The best leaf find of the trip, with beautiful red coloration and mottling from fungus. A partial leaf, with beautiful vein preservation. The next spot was the American Fossil quarry in Kemmerer Wyoming to look for Eocene fish (Green River Formation, Ypresian Stage, ~53-48Mya). Splitting though the material left out by the quarry we found a few fish, primarily Knightia and Diplomystus. The best Knightia, including the best fish of the day with its head still partly covered. Some of the Diplomystus. The first needs some repair as it broke through the tail. The second has a counterpart as well and I’m hoping to frame it soon. And a mystery fish, I don’t know what species this is, it could just be Knightia or Diplomystus but it doesn’t look like the others we found. The star find came close to the end of the time at the quarry, a section of a puddle layer packed full of Knightia, at least a dozen fish piled on top of each other. The quarry manager was kind enough to let me take the blocks without splitting them thinner since the material is full of fractures and likely would not have survived. The layer as it split in the quarry (US size 13 hiking boot acting as a rough scale). The three pieces I managed to recover. The blocks are currently in a storage unit in Washington until I can figure out how to get them prepared. I am hoping the first two pieces can be reunited and the part and counterpart can be mounted side by side but I’m unsure about how to accomplish this. If anyone who prepares Green River fish has any ideas please let me know. The third locality we visited was Westgard pass in Inyo California, hunting for Cambrian archaeocyathids (Poleta Formation, Cambrian Stage 3, ~ 520Mya). We were only there a short time as there was a lot of driving to do that day, but I still managed to find one example in cross section. My girlfriend was more lucky, finding four examples. These are our favourites, particularly the third, which exhibits some dimensionality in addition to the cross-section. I’m absolutely thrilled to find anything Cambrian, and to make things even better the fossil locality is just down the road from the Ancient Bristlecone Pine Forest, home to living trees more than 4,000 years old and one of my favourite spots on the whole trip. We also visited Capitola Beach to search for rolled cetacean bone. I found two examples with one clearly showing the cancellous internal bone texture. To cap off the trip I wanted to do a fossil hunt in my home state of Washington. Since I still don’t know where to go to look for the elusive Pulalius crab, we decided to search the West Twin River site for shrimp concretions (Pysht Fomration, Oligocene, ~22-33Mya). We found over a dozen of these containing partial shrimp. I think they are all Callianopsis clallamensis since this is a common species at this locality. The first concretion that I found after identifying the right material. Another shrimp nodule containing a large section of claw. The head of a shrimp. Two non-crustaceans, a gastropod internal mould and a beautiful white bivalve in a small concretion. A mystery concretion with something eroding out from both ends. And last, one of the strangest concretions I have ever seen. The outside is hardened but the inside is a soft clay consistency with several bits of shrimp shell, completely the opposite of the hard in the middle concretions I’m used to. In all, it was a fantastic trip. I would love to go back to all the sites we visited, and there is so much more to explore next time I’m stateside. I’m looking forward to getting out hunting again. Stay tuned for the next big trip to celebrate finishing our masters. Benton
  3. Fossil of Scat?

    I found this rock in an outflow stream of the Coeur d'Alene River in Idaho. I believe it is fossilized scat. On the first size are bone shards of something the animal ate who deposited the (believed) scat. On the opposite side, I believe there are faint small animal foot prints. There are claw impressions, slightly oval in form, with deep claw like impressions. I could be wrong. Can anyone help me?
  4. Reef fossil ID

    Hello, Ive been wracking my brains over this and I can't find anything close on Google but it really looks familiar. This is from what I think is early Triassic Thaynes group near Minnetonka Cave in St. Charles Creek/Canyon (from a paper I couldn't download so I lost it) (west shore of Bear Lake) but there is Ordovician St. Charles Fm immediately to the west. The geologic maps I can find don't even show the Triassic but I collected the ammonite locality south of Liberty so I know it's at least in the area. Anyway I collected this little bugger at the site and I'm stumped (honestly the only fossils I know well are Eocene-Miocene marine in OR & WA). The bivalve (brachiopod?) is from the same site. I got a lesson in how not to do acid removal of limestone matrix so it's a little over-soaked lol.
  5. Helicoprion Shark Fossil?

    Good afternoon, I would like to start off with saying that I know very little about fossils and Geology so please excuse me if I make any errors or misstatements. Recently I purchased approximately 10 cubic yards of rock from a local business to use for landscaping around my property. The business has claimed that the rocks they sold me were excavated from in or near the banks of the Snake River in Southern Idaho. I unfortunately do not have a more exact location but I would be willing to possibly follow up with the business if more information is needed. With the help of some friends we were able to determine that scattered throughout the 10 yards of rock I received were Agates, Jasper, Opal, Amber, Star Garnets, and small fish and crustacean fossils with some even appearing to be in a preserved state encased in a soft yellow translucent amber. Knowing some of the types of rocks I received, the general location of excavation, and a brief history of rare fossils that are found within Idaho I was stunned when I came across the specimen pictured below. Most notably the spiral tooth-like feature is what drew me to this rock and made me take a closer look. There are very distinctive features that appear to be eye holes, nostrils, gills and of course the famous spiral tooth pattern. The internal structure looking through the eye is a completely opaque white substance that resembles a mix of opal, amber, and other silica material. The silica based specimen appears to be sitting on top of a hard rock stone. Sunk into the very bottom of this stone is a 2nd spiraling tooth-like feature which I only guess could be the other set of teeth. After coming across this rock and with the little stated knowledge that I have on these subjects I took to the internet to attempt to research Helicoprion fossils and in general shark fossils. As many of you are probably already aware besides teeth it is very rare to find any fossilized portion of a shark of any species let alone a possible intact skull from one of the rarest sharks out there. The overall size of the specimen is also a little concerning as my understanding is that the Helicoprion shark was a rather large shark and was likely somewhere between 3-5 meters at full growth. After doing the research on whats out there and based off of what I already know I still remain rather skeptical that this is what I'm claiming it to be but at the same time remain hopeful that this is a fossil of some sort as I am having trouble coming up with an explanation for the content that this rock is made of among others in the rock pile and for a reasonable natural explanation for spiraling patterns. This is 1 of 3 rocks that I've found thus far with spiraling teeth-like features. The other 2 are made of similar material, resemble some similar structures, and share distinctive features other than the spiral such as eye holes, nostrils, jaw lines, and ect. The major difference between the 3 is the specimen that is pictured here is larger, more intact, and displays the most features. I appreciate any feedback that I can get because of the pandemic college campuses are closed and it has made it hard to get in contact with people who could possibly help me. I would like to have as much knowledge on what this possibly is before jumping in the car and driving to the nearest Natural History Museum which is over 3 hours away from me. I would hate to do something like that if this is only just a "cool" rock. I have many more pictures if needed displaying all of the features mentioned and many more as well as pictures of other specimen found in the same rock pile just let me know if they are needed or wanted and I can message them or make another post with them.
  6. Rock or Ammonite?

    Found this while I was fishing. Can't tell if it's an ammonite or a rock. It does have that spiral pattern very slightly. Plus, when I turn it on its side, it looks like there's some indication of a small chamber. What's your input? Ammonite or rock?
  7. Petrified Wood SCORE!

    So, me and my family bought a house. We are moving into it in June or July. While exploring the backyard and measuring for a garden, I scored a big fossil find. 5 LARGE pieces of petrified wood. Larger than I have ever found so far. They were partially buried in a spot where I was going to put some flowers. Legally, I can't take them until the deal closes, which we are certain will happen before we move in. As soon as the deal closes and I can get my hands on them, then I will post pictures. Apologies for keeping everyone waiting for the photos. Jared
  8. Moving today

    So, as the title says, I am moving to a new house today. I'm moving all my fossils, and loading up the truck with my stuff. I'm attaching a picture of my best fossil, just because I like showing it. I'm the person in the picture. The fossil is a Phareodus testis and probably a diplomystus on the bottom. Anyway, here's hoping I get all my fossils moved there safely!
  9. I haven't been on for a while. Reason is I'm getting ready for a move. I wanted to tell you all that while I was looking at a house, I found a 4.6 lb piece of petrified wood. The land owner said I could take it, to my surprise. The fossil is already pack with my other fossils. I'll upload a picture when I have a chance. May take a while.
  10. Slew of fossils found, help!

    Alright, these are from an area I frequent. I get all sorts of different kinds depending on how high or low I search. I’ve taken some to a professor around me and he said the red material is hematite. I’ll add them in the comments
  11. Petrified Wood?

    Me and my brother were walking near a waterfall, when we both found this. I thought it was just a rock, but it has a very strange visible structure that makes me suspect it is a fossil, maybe its petrified wood encased in sandstone, but I am not sure. I am attaching 3 pictures of it. In the second picture, you see why I think it is petrified wood. In the other two, you see the structure of the rock I was talking about. What do you guys think? Jared
  12. First find in a while

    My first find in a while. Been crazy because I am preparing to move to a new house. Here is how I found it. I was looking at a house with my mother. We were talking to the land owner about the house, when I saw a rock. Immediately my mind said, "petrified wood." I went over and looked at it. I was right. Petrified wood. I spoke to the land owner and said that he had petrified wood on his property. Without me asking to take it, he said that I could have it! SCORE!!!! Well, thats one way to find petrified wood! Jared
  13. Claw?

    Found this near Murphy, Idaho while looking at rocks. To me, it looks too curved to be a regular rock. There also seems to be a structure inside it. Is it a fossil claw, or something else, or not a fossil at all?
  14. Found an Ammonite

    So, an interesting story. I went to North Idaho for a funeral. I went to a thrift store after the funeral. I found this Ammonite there. No joke. It even had a Certificate of Authenticity next to it. 25 dollars? I couldnt pass up this opportunity. I was able to get it! Its a nice specimen!
  15. Trying to figure out what these might be. They would have been under water, the location still has a lake overtop of it, but the water levels were low when we found it. Soil has a lot of clay and there are tons of petrified or fossilized bones that litter the beach. Seemed larger than cow rib...any ideas?
  16. Petrified Wood?

    Hello, So, I was looking in my collection, and I found this. Its the first fossil I ever found. Found it in my backyard in Nampa, Idaho. I was looking at it today, and I was beginning to wonder if it really was petrified wood. I mean, it didnt look that much like it. It looks more like a crystal. While I was getting a picture under my magnifier, I discovered that it had lines like wood grains going in one direction. I never noticed them. The thing is you can only see these lines under a magnifier at maximum magnification. They are that faint. I have two questions. First off, is this really petrified wood? Second, if it is, why is it so black? I have never seen petrified wood this color. Any help will be appreciated, Jared
  17. Fossil Bones?

    Hello, So, awhile ago, I posted about going through a rock and finding a shell fossil, which turned out to be a Gastropod. In that same rock, I found these fossils that look like pieces of a spinal chord, and two other pieces that look like parts of a skull. These things are VERY small, I had to use a big Magnifier to get the picture. They are about 1/2 a centimeter long, except for the other two parts, which are 2 centimeters and 1 centimeter long. The rock was found in Nampa, Idaho. A friend of mine told me that the rock was likely brought in from Bruneau, Idaho, as I mentioned in an earlier post. He also was the first to point out to me that, "There are pieces of a fish skull in the rock." Anyway, I would like some input. I am pretty sure the 3 small pieces are part of a spinal chord. Attached is a picture of just one of them. I think the other two pieces are part of a fish skull, like my friend said. I would ask him for help on this, but he passed away last year. What do you guys think? Fish bones or something else? Are they even bones? If you need individual pictures of each one, I will get them. Jared
  18. A family of amateur fossil hunters from Utah -- the Gunthers -- found this fascinating fossil in the Spence Gulch shale part of Utah in 1992, and shared it with Richard Robison at the University of Kansas. The mystery of what it was went unsolved for nearly 30 years, until a team at Ohio State uncovered the telltale circle that showed the creature had attached to a shelly surface via a basal disc. It's the earliest/one of the earliest known specimens of a mat-sticker making the evolutionary move to attaching to a harder surface--a leap that makes some of our modern-day echinoderms, including sea cucumbers, possible. They recently published their findings in the Bulletin of Geosciences but this discovery wouldn't have been possible if the Gunthers hadn't found the fossil in the first place. Just fascinating stuff. (story here: https://news.osu.edu/scientists-discover-evolutionary-link-to-modern-day-sea-echinoderms/),
  19. Oviatt Creek Idaho

    Hi all, I am curious if anyone here has any experience at the Oviatt Creek Fossil Beds outside of Moscow, Idaho. I did not find any information on the Fossil Forum and an internet search turned up a only a few papers and more questions than answers. The composition of this area may be similar to the more famous Clarkia fossil beds. It seems that the Oviatt Creek beds used to belong to the United States Forest Service, but may have been turned over to the Potlach Timber company. Has this impacted recreational, non-vertebrate hounding? A call to the local Forest Service Ranger Station may be in order if no one here has any insight. Thanks!
  20. Identification

    Curious as to types of petrified wood this may be. Photos are not great but best as I can do for now. I love petrified wood and new to identification of types but trying. Most of my samples are found at really high elevation on mountain tops, which intruiges me when I read how it is formed. I'm no.longer able physically to go Out anymore, these are finds from many years ago that now I'm curious into more the types now. Excuse the spelling as I have my kid posting for me. I can't text with his hands hardly anymore.She Thanks for any comments.
  21. Mystery Fossil

    My dad got this from a friend and gave it to me. He has no clue where it came from other than it came somewhere around idaho. Me and him have been trying to identify it for days, and got nowhere. we need help. any hints on ID will help. Thanks!! (P.S. if you know anything about its worth, tell me please!)
  22. Triassic cephalopoda

    GUE SPATHIAN (LOWER TRIASSIC) AMMONOIDS FROM WESTERN USA (IDAHO, CALIFORNIA, UTAH AND NEVADA) Jean Guex Alexandre Hungerbühler James F. Jenks Luis O’Dogherty Viorel Atudorei David G. Taylor Hugo Bucher Annachiara Bartolini Mémoire de Géologie (Lausanne), n°49, 2010 about 16 MB the contributing authors are dyed-in-the-wool experts on the Triassic @andreas
  23. Found this in southern Idaho

    Found in a river bed at an elevation of 6,200 to 6,100 in owyhee county, Idaho. No known formation not sure if it's bark or what it is. Thanks ahead of time
  24. I peer into a small geode at 80x to look at what look like small blooms of crystals covering bulbous blue crystal mounds. Originally I wanted to see why the geode had white crystal patches on one side and the top side had darker spots. First I see that the "blooms" are actually super small stones that look to be growing their own crystals. I had to look further, I wasn't sure if the geode was opened when I chipped it free from the breccia or if had been open while it was encased. The crystallization was perfectly clean, so I surmise it was. Either way, how in the world does a geode crystallize and then later adopt a speckling of microscopic stones? So, I'm looking over the surface and there is this anomaly. does not match any of the features inside the geode. I look closer and it appears to have, internal organs, segmented legs, and antennae. Could this really be some type of shrimp? Or similar crustacean? I'm really curious to hear what you all think. Hopefully the images suffice, I have a biological microscope so it is not the best at 3D. Posterior Head/Antennae I know I've been looking at a screen all day, but this sure looks like a segmented/armored leg. And, I'm spent
  25. Fossils in Idaho

    I will be in Idaho Falls in August, what are some good spots for fossils within an hour or so?
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