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Found 1,358 results

  1. Marble Mountain trilobite id

    Many years ago I found this trilobite on Marble Mountain in California. It is roughly 1 cm across at it's narrowest and 2cm acrossat it's widest.. It is probably cambrian age without much detail preserved. I am unsure of what layer it came from exactly, as it was found loose as is. Any general ideas would be appreciated.
  2. Back in January while I was working through my prep queue, I was working on some Penn Dixie material. As a lot of this stuff is easy for me to get and fairly common, I wanted to get a bit fancy with some prep. The goal was to make a sideways mounted pedestal, and eventually square the tiny block. This was how it looked originally:
  3. Illinois Silurian Trilobite Cephalon

    This partial cephalon was found in rip rap near a quarry that exposes the Silurian Racine Dolomite in Kankakee County, Illinois. I have seen similar examples listed on the auction site, but without IDs. Looking at older publications leads me to think it is Dalmanites, but I'm not positive, and definitely unsure what the species designation would be. Thanks for any help!
  4. Okay so I have some questions on what you can and can't do with your typical trilobite in shale fossils. To help direct the discussion, I am interested in setting a small trilobite in silver as a gift. I make silver jewelry both using PMC (Precious Metal Clay) and traditional cutting and soldering. So, first question: Can you use high percentage (70% or higher) rubbing alcohol to clean all the dust and debris before sealing a trilobite? If not, what should I use? (I know you shouldn't use water) Question 2: What sealants can/should you use on a trilobite? I am looking for something that will be both waterproof and help prevent chipping. Question 3: Does anyone have any experience exposing them to high heat? It is common in jewelry making for heat to be involved, from both direct flame and indirect radiant heat. Is there any kind of precautions I should take and if so, what? What type of heat did you expose them to and what was the result? Different minerals act differently so remember we are talking about soft-medium shale. Question 4: Do you have any other advice or precautions you can give me regarding the use of fossil trilobites in/from shale matrix regarding their use in mixed media projects? The information I gather on this will help dictate my methods and help me create a plan for my project. There are many different ways I can do this and want to get a better idea of my options. Thanks. Picture is not of the exact trilobite to be used. It's just a reference for the kind of material/fossil I will be using.
  5. So I just started playing with fossil prep and wanted to share what I have learned so far. I have a bunch of air tools coming in but couldn't wait to start so I started using my hand tools. I work with silver so I have quite a few. The wooden handled set is from online auction and cost under $9. The silver soldering pick I can't remember. I have 4 small Symphysops that were sent to me unprepped, 3 of which are in a softer shale. The matrix of the other one is more crystalline and too hard for hand tools. I did my homework like any good fossil lover regarding hand prep (or any prep for that matter) but found out very quickly that it's a hands on learning experience. The way the matrix rock responds to tools and the hardness of it vs. the fossil are something you can only know in person. As I am brand new to all fossils I was terrified to take tool to rock for the first time. I chose my least complete specimen to get a feel for it so that if I ruined anything I wouldn't be too heart broken. For any person brand new the excitement and terror comes in equal measure! After staring at the rocks and test poking with different tools for at least an hour, I finally felt ready. (Okay not READY, but I was never going to be ready!) First I established a perimeter about .5-1cm away from the fossil. I used a strait pick to dig a small border down into the matrix to establish the area I was looking to remove. I will be removing the trilobite from the matrix completely for a project so I decided to dig down around it and will eventually go under it to free it completely. I found that using a plaque scaling tool works very well for scraping away sections to create a "plane" around the fossil. For the edges I first tried a strait pick but quickly figured out that if I gently moved down and away from the fossil with a semi-blunt spade shaped tool it would uncover the edges better without hurting the trilobite. I do this a bit then switch over to a modified round pick that I curved to smooth around the perimeter of exposed fossil material to clear away ridges and dust to see how much I have exposed so I don't go to far or too deep with the spade. So far I have exposed the top and about half of the sides of the trilobite and have caused no damage. As I said the matrix is pretty soft so no heavy pressure is needed. Every minute or so I stop to blow the dust off and brush the fossil with a velvet cloth to get a look at where I am at. I was given the advice to stop every 15 minutes or so to rest my eyes and move around and have found this to be invaluable advice. After staring up close at the fossil for 20min my vision gets super blurry and takes a couple of minutes to return to normal. I find that when I come back I notice details I didn't before and it helps me chose my next move. Every time I stop I stand up, stretch my back and neck, touch my toes, flex my hands and wrists, and then go limp for a minute before returning to the fossil. I have to say I am loving the "focused relaxation" (fellow member's term) of working on a small specimen by hand and can see myself continuing to do it regularly even after I get my tools. It does wonders for my PTSD and am shocked to say it is even more effective than meditation or CBT. I will update as I go and learn and if I get into trouble. I hope this can serve as a starting place for other new people and would love to get tips and advice in the comments for me and future readers.
  6. So, I found this guy on the auction site, really only this one representative photo. These are often fake or frakenfossils, but I didn't see anything that screamed fake to me in this one photo. Just wanted to put it out to the room for other people's input. It doesn't matter as I basically stole it for 9$, so even if it's fake, I don't much care. Just curious what everyone thinks. (I don't have more photos, I just bought it this morning, this is just the provided photo. I'll be able to tell if it's fake when it arrives this weekend for sure, but the suspense is just too much, lol.) Also, it's about 5" long, not that that matters.
  7. So I just started practicing my fossil prepping with just some basic dental tools on this little trilobite! I just got sent a set of 4 small, unprepped trilobites and as my new air tools still haven't come in yet I thought I would play with the dental tools for a bit. I'm going very gentle and very slow. I am finding the curved edge of an angle pick to be pretty good for going around the edges without running the risk of gouging anything. It's very relaxing! I'm sure my tools will arrive before I finish freeing this little guy but I couldn't wait to play with him! I need to fully extract a couple for a small display project I have planned involving the trilobites and some microfossils in a tiny glass case. I am putting sand down on the backing and placing very small shark teeth around the edges and then arranging two trilobites, a tiny ammonite, and some VERY tiny shells! As I am determined to prep everything myself it's gonna take a while but I think it will look awesome when done. Say hi to George! (I named him George )
  8. Day Three ; Locality One (Or Eight if you include Days One and Two) Ait Benhaddou, Morocco. 21st February 2019 We spent the second night in Ouarzazate, where the biggest film studios in Africa can be found and many famous films have been shot. In the morning we went briefly to the Atlas Studios where Anouar took some photos of the exterior for his blog, but non of us actually wanted to go in, so we headed for the kasbah of Ait Benhaddou. The road going south from Ouarzazate, at Ait Saoun, just before one reaches Agdz is a fossilized and genuine stromatolite reef, but it was out of our way on this occasion, so that's one for another day, but here's a photo courtesy of the Universities Space Research Program who test out Moon Buggies, Mars Rovers and stuff there. Just before we reached Ait Benhaddou, we stopped off at a viewpoint, I wanted to look at the rocks and hillside as fossils can be found in this area. I can't remember what they were as i didn't find any, but one of the hills next to the kasbah is quite famous, so i'm told. You can see the kasbah in the distance here and i think the hill just to the right of it is the fossil location. Hunting around, I did find lots of pieces of what I think is a porphyritic gabbro. Nice phenocrysts!
  9. My first fossil hunting trip was a success! I have a tone of amazing material from Grand Isle VT! I have no idea what most of it is though. LOL But it's going to be so much fun learning what I have. I even got one complete 1.5cm trilobite! and some kind of head thing! Here are some of the pics!
  10. It's been about five months since I've been able to get out and dig, so when my collecting comrade and I arranged it, off we went. The weather was perfect, although it was muddy going. Spent about a day and a half at our site. Finds were not the best for some species, but the focus was more on site preparation. Pictured here are some Greenops widderensis. Both are missing parts, so will likely be in the grafting pile:
  11. Trilobites in Norway

    This year's second hunt was successful, considering the snow. There is still a bit of snow covering some places. I was still lucky enough to find some ok fossils. The area where I found these trilobites is called fossildalen/fossilvalley in slemmestad (i`ve showed pictured from the area before). The fossils here in the area stem from the time periods of Cambrian, Ordovician and Silurian, a period of 541 million to 419 million years ago. At that time, Slemmestad was a seabed in a relatively shallow sea. The trilobites fossils I found are about 420 million years old I believe. I found around 10 trilobites or parts of them.
  12. Chinese Trilobite

    I have seen similar looking Trilobites from China listed as Illaenula vietnamica & Ductina vietnamica (on different websites) Are both these names the same species?
  13. Beltzville State Park

    The Delaware Valley Paleontological Society got a permit to explore the restricted area at Beltaville Dam in Lehighton, PA today. The spillway for the dam is immense! The 20-50ish foot walls of the spillway are covered with rubble in swaths of hard blue-black and red stone, soft colorful clay stone, and the occasional bit of tan sandstone. All are from the Upper Devonian Mahantango Formation. The sun was shining, the air was warm and the wind was still. Perfect day for prospecting! Everybody spread out along the walls. There was more than ample room for everybody to claim a big spot to explore. I walked along the north wall until the smooth, flat stones started showing texture. I had expected to find very little in the harder material and lots of things in the colorful clay. That’s been my experience on the beach in the adjacent state park*, anyway. Quite the opposite! As soon as I found a promising spot in the hard matrix, I sat down and examined every rock. The trilobites were lurking watching me from all directions. I found eyes from at least 8 animals. Most I kept, just for the sake of counting. A couple I tossed because this was getting silly. One I gave to someone nearby, “So he can keep an eye out for you.” The best was this 2-inch Phacops sp. cephalon. I now officially claim to have the PA State Fossil. I don’t know if I’ll ever be able to figure out if it’s P. rana, but the right genus is close enough for me. Such a cute little froggie face! I found one tiny brachiopod or bivalve among the buggies that still had the whole shell intact, albeit a might smoothed during its time under water. It's not silicified. It's not pyritized. It's still CaCO3 after all these ages. I tested it. I showed it to our trip leader who said that there was coral preserved like this shell further down the wall. Nifty. There were also some very nice, red-stained bryozoa and hash plates. Unfortunately, the hash plates were mostly at the narrow ends of long rocks, arranged 90 degrees from the plane of the layers in the splitting stone. Most I admired and left behind. There are only so many big, mostly-featureless rocks I can store in the house. After a couple hours, I appeared to exhaust my trilobite supply. People had walked past me with some pretty horn corals molds, so I headed towards the clay to see if I could find any. No luck. There was plenty of colorful stone, buy almost nothing as far as fossils, so I kept picking my way across the wall where I could get footing. I kept getting higher and higher until eventually I needed all 4s to navigate in any direction and abandoned my collection bucket. Another quarter mile or so down the wall, I found a good spot to slid tom the spillway floor. And there they were. In a space covering maybe 5 horizontal feet of the wall were rocks littered with preserved coral bodies. Jackpot! I spent at least an hour at the top. I tried to slide down a little and slid all the way to the bottom, unable to climb back up the steep pile of flat pebbles. There was definitely more at the bottom, but the middle eluded me. While poking around for corals, I found a couple of ½” brachiopods with both sides intact and a preserved crinoid stem. I walked across the spillway and back up the other side but found nothing. I somehow totally missed that the rest of the group had left, with just Rick and Steve watching me from a distance. Typical for me to be the last one out. I'll post a link in the comments to my Beltzville album when I finish sorting through my finds and photographing them. *Yes, I know it is illegal to collect fossils in most states' parks. Pennsylvania is an exception.
  14. Hello everybody I would love to hear your thoughts on those two Trilobites from KemKem/Morocco (I can't provide a more specific area). Any red flags visible? I can give more pictures with different angles and details. Just tell me what you need. And again: Thank you for the help First Trilobite in Matrix. Length 6,3 cm (2.48 in) Second Trilobite rolling around without Matrix Length 3,5 cm (1.38 in)
  15. Onnia prep

    So a while back I purchased an Onnia superba in matrix from @ReeseF. I decided the other day to put a few hours into it, as I'm getting really tired of prepping Eldredgeops, lol. Before:
  16. I have up for offer this little fella. He's not perfect, but he's a cute little ~2cm prone Eldredgeops rana with a nice little coral in association. He's got something weird going on on the right portion of his cephalon into the first few pleurae, but has really nice color and a great personality. I prepped him out to a degree, but I don't want to risk losing any more of his already damaged glabella. I'm offering him up in trade for another equally disrupted trilobite. Message me with any interest!
  17. Hey everyone! I am about to be on a business trip for the next week so I made sure to try out a new location this past weekend. I went fossil hunting on Saturday and Sunday. Both days! I doubt I’ll get to do a double header like that for a while. Once summer hits I’ll have to figure out a way to fit in all these outdoor activities lol. I went to DSR to play for a little on Saturday morning. I only had until 11:30am to hunt, I had to help wedding planning with the fiancé. I only stayed at DSR for a little and gave myself enough time to go to Briggs rd for a first time hunt. Ive never been to Briggs rd but I’ve seen some trips posted by Dave @Darktooth and the location was very close to DSR. It was a site I was told to visit if I wanted to find Eldredgeops. Greenops are the more common trilobite at DSR and Eldredgeops is the more common trilobite at Briggs rd. I must say...very interesting site. Not very “pretty” as far as roadside quarries go, but she’s a beauty I tell ya haha. I’ll follow with pictures of Saturday’s DSR and Briggs rd finds after the text. I took my nephew out fossil hunting on Sunday cause he’s been pretty aware of my activities lately lol. I took him, my sister and brother in law to DSR and Briggs rd on Sunday. I went to the diamond mine last year with my nephew and we didn’t do so hot so I needed him to take home something this time! We sure my nephew Dylan went home with some nice trilobite material. I gave him a nice folded over greenops from DSR and my brother in law found a killer Eldredgeops at Briggs rd. So Dylan was a happy kid with some nice fossils. Ok time to show pictures. Trying to find a way to streamline this process lol. First Saturday’s take homes
  18. I'm visiting Texas from California where fossils aren't readily available and I wanted to bring back an ammonite and trilobite for my girlfriend. This is the first time I've been out of the west coast and want to make it memorable. I was in Mineral Wells Sunday and did find a tiny, partial trilobite but no ammonites. I'm in Austin but I'm willing to drive snarge near anywhere in the state to go on a dig. If anyone wants to show me your collecting sites with the knowledge I'll keep the location to myself I'd greatly appreciate it, and so would my girlfriend. That aside, thanks all for the great posts! I don't think I would've found what I've collected so far without them.
  19. Redlichia mansuyi (Reese & Endo, 1937)

    From the album Trilobites

    Redlichia mansuyi (Reese & Endo, 1937) Cambrian Chengjiang biota, Yannan Province, China
  20. Palaeolenus lantenoisi (Mansuyi 1912)

    From the album Trilobites

    Palaeolenus lantenoisi (Mansuyi 1912) Chengjiang Biota, Yunnan Province, China
  21. A number of possible trilobite eggs from the Middle Ordovician Sueve Formation of the Cantabrian Zone were found and studied, during the construction of a tunnel in northern Spain. They found many pyrite spheres which they believe to be eggs from members of the pliomeridae family of trilobites. They also found different post-embryonic stages of calymenacean trilobites. I do not know as much as I would like to about trilobites, but I found the idea of fossilized trilobite eggs interesting. Does anyone know if trilobite eggs have been found before? I left links to the paper below! Thank you for reading. https://scholar.google.com/scholar?as_ylo=2019&q=trilobite+&hl=en&as_sdt=0,33&as_vis=1#d=gs_qabs&u=%23p%3D8GgXRgHLIFUJ https://books.google.com/books?hl=en&lr=&id=12qNDwAAQBAJ&oi=fnd&pg=PA23&dq=info:8GgXRgHLIFUJ:scholar.google.com/&ots=ndL4Yvl33A&sig=77hwzzM82cT_-YA_qeGIEKx1Z5Q#v=onepage&q&f=false
  22. Interesting Bug # 1

    Let's go on what may turn out to be an extended journey. It is my intention to try to take pictures ever few hours along the way while prepping this little guy. In a few minutes I will post a picture of an unprepared trilobite exactly as found with no preparation whatsoever. What is a bit exciting about this one is that it is actually my bug and eventually when finished I will actually get to keep it for my own collection. Unfortunately for me, most of the really nice bugs and crinoids I prep end up not being mine, but at least I get the chance to experience them and see them come alive in person. I actually have 4 bugs and a nice plate sitting beside me right now that are not mine and waiting for a couple more to be done before packaging off to the owner. To set the scene a piece of matrix a little larger than my fist was split very cleanly into two pieces. The trilobite was cleanly dissected into two pieces across the split as are many trilobites when they are found. I am very hopeful from what I can see that the trilobite will be essentially complete; but that is really only known by the fossil faerie's at this time. You know those little gnomes that during the night hide the fossils for us to find, But they often try to trick us with those pesky partials. To help you out a little bit I have placed the picture with the trilobite roughly in the correct orientation. Eventually the two halves will be reunited by using a super thin cyanoacrylate that is made for Radio Controlled airplanes. So to answer a prep question that is often asked , Do you glue first then prep or prep then glue. The answer is it depends on the type of split you have, the amount of matrix to be removed and the quality of preservation of the fossil. In about 80% of the fossils I will do some prep first , then glue. I specifically want to see that I do in fact have the correct orientation for the fossil. I am also at this point trying to determine how complete the bug is. You do not want to spend 100 hours on a bug only to discover it is a partial. I once prepped 3 Oklahoma dicranurus for someone and sadly they all turned out to be partials. For example once you determine where the cephalon or pygidium is, go to where you think the opposite end of the big should be and see if it is there. If you are dealing with a spiny bug like a dicranurus look to see if the free cheeks are there and check that the long pygidial spines are there. If they are not you may be better off investing the 100 plus hours it might take in a better specimen. You will often find partially prepped dicranurus for sale that have been abandoned at the point the preparator discovered that something that should be there is missing. It takes almost as long to prep a dike missing say 1 free cheek as a perfect one, but the price difference between the two bugs when finished could easily be double. It is very important that you know the anatomy of the bug you are prepping. If I am working on a less common bug I will always have a picture of that bug at my prep station . However, reality is that I end up prepping the same 5 types most of the time (eldredgeops, greenops, ceraurus, isotelus, flexicalymene) as this is generally what I and my clients actually find. If it is a spiny bug you must know where the spines are likely to be on your matrix or you will without any doubt destroy them. If the bug is say a phacopid then you are off to clear sailing and can use very different methods to get down to the bug. I for instance on a non spiny trilobite will often use a Dremel with a diamond wheel to quickly remove a lot of the overlying matrix. I would never do this on a spiny trilobite. So without further rambling delay here is the mystery bug prior to any preparation. I am not at this point going to even tell you what the bug is, but if you would like to hazard a guess then send me a PM and I will let you know if you are correct Now here is the same side of the bug after about 15 minutes of preparation. At this point I have not discovered anything that would lead me to believe that the bug will not be complete. Note that you can see black sharpie lines on the left. I always put sharpie lines across the split to make it easy to line them back up when time to reassembly. You cannot see it here but all sides have them If you have anything interesting that you would like to consider having prepped you can always send me a PM and we can discuss. My next plan of attack is to spend about 15 minutes on the opposite side of the split. Following that I will come back to this side and use a Pferd MST31 air scribe with the fine stylus to remove some of the matrix well away from the actual fossil. Note that at this point I already know where the head and tail should be on the fossil and the correct orientation that I am going to prep from.
  23. Ammolite with trilobite??

    Ammolite with trilobite? It can be real?
  24. Hello, I found this trilobite on a estate sale and since I’m new to fossils I was wondering if anybody here could help me out and shed some light on it, is it a Cambropallas? And most importantly I was wonderingif it was real or fake The matrix seems weird... What do you all think?
  25. Back in May 2017, I brought back some nice fossil plates from Ohio, I believe Ordovician in age. First photo is plate 1. Next photo (of plate 1) shows a close-up of parts of the trilobite Isotelus, next photo - a nautiloid (unknown species), next photo shows valves of the brachiopod Strophomera, along with many bryozoan fossils. Next photo is a close-up of crinoids on plate 3. (Not much on plate 2). And last photo is of quite a few crinoids on plate 4.