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Found 445 results

  1. This piece arrived by way of Copper Canyon in Chihuahua, Mexico. Its owner is inquiring if it's an authentic piece and the best way it could get appraised.
  2. This piece was located in the Copper Canyon in the state of Chihuahua, Mexico and we needed help in properly identifying it.s
  3. I was a bit curious about how they split ammonites, I first had a theory they might pour some sort of resin into it, partly to be able to split it aswell as preservation, before they use a thin saw to split it, then they make it shiny and nice, but I figured that might not work, so maybe anyone here knows
  4. I know this is a long shot, but I was hoping someone could identify these two fossils I know almost nothing about. Back in the 1970s and 1980s, my mother owned a lapidary and rock shop in Southern California. Her customers would sometimes give her samples of rocks and fossils they had dug. I believe that is how she got these. When she retired she packed everything up and moved it to her home. I inherited some of it when she passed away. That’s about all I know of them. The brachiopod looks like it might be a Mucrospirifer sp., but I really don’t have any idea about the ammonite. Perhaps something from the Goniatiida order? I know some of you will want to know the rock formations they came from. I’m not a geologist so I don’t really know. I can only tell you I found them in the Cardboard Box member of the Spare Bedroom formation, within the Old House group. (I thought I might apply to register those names with the USGS Geologic Names Committee).
  5. I've been looking for a lovely SD ammonite for awhile, and I consider them on par with Canadian ammolites. There are a plethora of incredible specimens from Fox Hills Formation, and I settled on a Jeletzkytes as I found their shape appealing. Imagine my delight when I chanced upon a positive + negative! Today, this pair is one of my favorite ammonites. Without the matrix base, it measures roughly 4.6 inches high. Jeletzkytes nebrascensis 70.6 - 66 mya (late Cretaceous) Fox Hills Formation South Dakota, USA
  6. Greetings all, My wife and I were heading back to Altus AFB (where I am currently training), after a weekend away in Dallas. We decided to make a brief detour to Lake Texoma, and the famous "Ammonite Beach." Parking by the dam, we followed the southern coast west for a little over half a mile. We passed a few (what I believe were) fossilized shrimp borrows and a couple of oyster shells. After turning the corner around one of the points, it was quite clear that we had arrived! The location absolutely lived up to its reputation, and we quickly faced a paradox of choice, in terms of which ones to bring back with us. Unfortunately we were only able to spend an hour searching, as we didn't want to contend with the storm system that recently hit the central part of the country during our drive home. All-in-all, it was a very productive trip, considering how briefly we were there. We found a few fragments, and a couple of relatively complete specimens. For one of those, we were able to extract both the fossil and the negative, which is always fun to show to people. I'm hoping that the central portion of the ammonite is present on the far right specimen, but don't want to touch it until I build my fossil prep station (e.g. micro sand blaster, air scribe, etc) after I move up to WA, later this spring. We will definitely be going back once more, prior to departing Oklahoma, to search for that "statement piece" for our collection. That being said, I've also heard that various echinoids can be found in the vicinity as well. I didn't see any, but I honestly didn't spend too much time searching closely for them. If anyone has any recommended sites for echinoids at or near Lake Texoma for a subsequent trip, I would love to hear about it. Cheers! -Nick
  7. A couple of years ago, while on a romp through the Rio Puerco Valley, I found this ammonite. Since then, I have attempted to find a proper i.d. for this specimen through literature and documentation of New Mexico's Late Cretaceous ammonites. With very little luck, the closest resemblance were ammonites in the subfamily Puzosiinae, which are not documented from New Mexico. Today I decided to show the curator and the ammonite researcher at the New Mexico Museum of Natural History and Science. Good news...they did not know what it was! ...pretty exciting. Anyhoo, I have donated it to be studied but figured I would post it here as well. Unknown ammonite from the Late Cretaceous (Cenomanian) Paguate Mbr. of the Dakota Formation - New Mexico, USA. I doubt they'll be jumping on this right after lunch, but I will let ya'll know the results as I do. Happy hunting, -P.
  8. Any chance there's a shell hanging on to this ammonite? I'm talking about the protrusion on the bottom right, at 5 o'clock.
  9. This came from a gravel bed in Travis county with a large bluish shale formation nearby. Any info on the material of the rock would be appreciated as well. Thanks!
  10. Good afternoon, I found this along the creek's edge near Del Valle Texas. Both sides are somewhat uniform. Plenty of shale formations nearby. Thanks
  11. I bought this ammonite in San luis potosi, Mexico. It comes from the geological formation of Taman. Which is late Tithonian- kimmeridgian in age. This ammonite looks weird!!! Can you'all help me identify the genus.
  12. Ochetoceras

    This species is found in the Taman formation. It has been recorded from there. Go to Fossilworks.org Type ochetoceras. Then click on Mexico. I made a post about it. It's called What ammonite? Special thanks to, Ludwigia for identifying the specimen here on the Fossil Forum.
  13. I Know I have done a What Ammonite? before, and this one is probably not going to be the last one. I bought this ammonite. I want to know more about it's Taxonomy. I don't know the age, or the locality where it was found. It measures 1.25 cm.
  14. Hi, I am posting a question to help my mom. She is very fascinated with ammonites after seeing my collection. She found this one online and she wants it but isn't sure if it's authentic or fake. I have a surriceras ammonite with similar markings but I can't personally tell with this one being uncurled. any help is appreciated
  15. For christmas, my husband bought me two ammonites. I'll show the second one in another thread. It is about 7 cm on 10 cm. The dealer told him this one was a placenticeras in aragonite from Madagascar, for me it more looks like a douvilleiceras, but i am not an expert so i need your help :
  16. Found this while walking along. Approximately 1 metre long, one of the rocks used to stop dune erosion, so unlikely from area. Any ideas? I have more images if needed, of all angles.
  17. Hello! First time posting here, my in-laws run an estate auction business in Idaho and they recently came upon this fossil. We're trying to figure out if it's real or fake. We were told it's from Morocco. It's about 70cm by 50 cm, somewhere around 25kg. Let me know if there's a better image to take. Any help is much appreciated! Jeff
  18. Hi everyone, So I made my first fossil hunting trip some time ago and was quite lucky to find a nice, almost pristine (well, sort of) condition ammonite. I want to make that into a necklace. What would be the best way to attach a loop for the necklace chain to go through? I am thinking of drilling a blind hole, sticking a "pin" in and then fill the hole up with some epoxy. Good idea? Note that it is quite small and I think it needs some kind of a polishing for it to shine, so any advice on getting it to look nice and bright are welcome too! Thank you!
  19. I found this in shoul creek, Austin, Texas. It looks like the bumps on the sides of ammonites, but I noticed it's not curved. I've also noticed things sticking out of the side, possibly ribs? I want to know what this is. It's broken and covered in rock so it's hard to tell if it's an ammonite or not
  20. Could anyone identify the attached ammonites...found in Cooke County, Texas
  21. Can someone tell me about the crushing that is seen in the walls of this ammonites chambers? Its odd to me that in the areas where the entire wall is gone, the geode/vug areas still occur as you would expect them to with chambers? I picked this up for $10 after noticing the crushing, because I don't have any like that in my collection
  22. Hi all! My son found this fossil in Pease Park, Austin ,TX, Travis County limestone. He wants to use it for our Christmas card! But we need to know what it is, so we can adjust the text on the card. It looks like an coilopoceras ammonite (see image below) , they are common in the region and the number of lines seems right, but someone in a fossil forum thought it was an echinoid, like a star fish? What could it be? Does anyone have an idea? Thank you!! Ammonites in the region:
  23. Bacculites

    From the album Delaware Fossils

    Bacculites ovatus Cretaceous Reedy Point (North side) Delaware city, Delaware Mount Laurel formation
  24. I could really, really use some help on this one! I found this 1.5" cephalopod in the Cretaceous MT Laurel sand at the C&D Canal, Delaware City, DE (north side). There are only four cephalopods listed for this site in the Delaware guide, the straight-shelled Bacculites ovatus, Oxybelaoceras (which is heavily ribbed and doubles over on itself tightly in a U shape) and the golden bullets of Belemnitella americana. There are two other cephalopods listed for the canal zone - at different sites- in the Delaware guide, but they are both tightly-coiled.This one was loosely-coiled, probably in a spiral, and lightly ribbed all the way around. Most of the ribbing has broken off of this specimen, but you can just make out how they go all the way around at the upper left edge of the first photo. The closest thing I can find to this is a lightly-ribbed, loosely-coiled Cirroceras conradi. It is listed in the Cretaceous Fossils of New Jersey, through which all the canal formations run, but the only specimens found in NJ were in the Navesink formation. C. conradi also gets smoother on the inside of the coil, at least in the image in the book. I'm not very good at figuring out the text descriptions. The C&D Canal isn't supposed to cut through the Navesink formation, either, but it is as close as I can find. I'm thinking this might be one specimen I should not lose in a drawer, but I have no idea what it is or where to turn once I figure it out. It just isn't supposed to be there!