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Found 640 results

  1. Interesting how something you read now can cause you to go back and have a look at something you put aside long ago because you did not think it was all that good or all that special. Last week Devonian Digger made a post "Trilobite in Need" This post got my interest because I did not realize any type of Dechenella was found at Penn Dixie. It got me to thinking that I should check out a box I had that contained what I believed to be a number of less than perfect greenops from Penn Dixie. I had put these away over the years as only being worth prepping on a rainy day and after I am caught up. I am way too far behind in my prepping for myself and other people to even think about prepping what I know is not going to be complete or at least better than my current display piece of that species / locality. My current best greenops is about 95% complete but a little distorted. A quick sort through them and this trilobite jumped out at me...... I had originally thought it was a damaged juvenile Greenops and was not likely going to be worth the effort that it would take to put it back together and then prep down from the top. You see the trilobite was split between two pieces of matrix and the front of the glabella was damaged and its genal spine was missing. I had found this at Penn Dixie in the summer of 2015. Here it is as I had put it away two years ago Note that I had originally trimmed the top piece in the field to reduce the carry back to the car weight. Those of you that know me realize that I take my saw pretty much everywhere. The good old boy scout in me "Always Be Prepared" So this morning, I got out my dremel tool with a diamond cut off blade and trimmed the top half of the matrix down to a manageable size. When you do a top down prep you want to remove as much of the upper matrix as possible before gluing the parts back together. The more matrix you leave the longer it is going to take to get down to the trilobite again. It is actually quite worrisome when you take an exposed trilobite and cover it all back up in the hope that the end product will be better than what you started with. Here is the trimmed piece of top matrix back in place. Seeing that the two parts had been separated for about two years they fit quite well. I used a thin non gap filling cyanoacrylate to do the bonding . Which I clamped for a few hours. Note that I mark the boundaries of the bug with a black Sharpie. Usually I put an "H" or "T" to let me know the orientation but I could still see part of the bug so this was not necessary. Next comes the boring part of scribing down to the approximate area of the actual trilobite . This was accomplished with a CP 9361 until I got close and then a German Pferd MST 31 with a fine stylus to get closer. The Pferd has a very fine stylus and a very high cycle rate (60,000). The scribing process took about 10 minutes After about 30 minutes of air abrasion here is where we are in the process As you can see the air abrasion of the bug is now complete. COMCO unit using 15 PSI .015 nozzle and 40 micron dolomite under 20x magnification. I am now at the point of deciding how much if any restoration I will do to this bug. It is cute and a species obviously that I did not have from Penn Dixie (or at least know that I had). It would probably benefit from some restoration So what is it. I am leaning towards it being a Pseudodechenella rowi. The dimensions of the bug are 14.7 mm long 8.7 mm wide at pleura 11.8 mm wide at tip of genal spines. Not being familiar with other specimens I suspect that this is a juvenille as the other examples I have found are twice this size. I am sure that Scott or Gerry will likely jump in to give me the correct identification. All in all not bad for something that until this morning was sitting in a shoebox wrapped in tin foil.
  2. This is a Zagora's Asaphidae that I began to prepare yesterday. Can anyone helpson it's ID, please? And what are the existing papers about Asaphidae in Morocco? I have several to study and ID. Thanks in advance. Miguel
  3. Today my poor boys suffered. All because their father felt the need to find a trilobite. Yesterday was my nephews birthday. He lives almost three hours away. We left about 8:30amand didn't get home till almost midnight. I already knew that they would be exhausted in the morning and when they are tired it is hard for them to get excited about anything. BUT good old Dad had big plans so I got them up at 7:30 and I could tell it was going to be a rough day. We arrived at 10am and I debated on were to start. There was a lot of debris sitting on top of my favorite layer. I decided to try working a bit higher then I normally do. I was finding some decent things right off the bat. Then I started finding a lot of parts and pieces of Dipleuras. I just knew I would find a whole one. The boys didn't even get into it all all. They just wanted to leave. I tried to talk words of encouragement. They weren't having it. Then I told them we would leave as soon as I found a whole one, and I'm getting close, so it shouldn't be long. Well at about 1:00 I thought it wasn't going to happen and I should end their suffering and take them home. But just a couple more minutes. And then it happened! I grabbed a piece of matrix and it all crumbled into a hundred pieces and I saw the pygidium and partial thorax hung upside down from the cliff face. My heart started pounding, I had high hopes it was all there. I gave a couple gentle whacks with my hammer and then pryed it off with my prybar and Whalla! A semi prone, approx. 3 3/4 inch Dipleura. Unfortunately the left eye and cheek is missing. I tried in vain to find it, but to no avail. But most off the cephalon is there and its enough too make me happy. And my kids were happy that we could finally leave. A win for all! Here are some pics enjoy!
  4. Hello, is there in Morocco any other species of Onnia? Or just Onniasuperba? Those ones in the pictures are from Blekos. Thanks in advance, Miguel
  5. Hello, found this one and it seems a Zelliskella. What do you think? 5,1 cm @piranha Miguel
  6. Hello, I received this fossil as a gift over ten years ago. It came in a box with a small piece of paper that labeled it as a Psychogype Elegens from the Atlas Mountians in Morocco. (I'm also not sure if there was a typo on the card and it's supposed to say elegans) I was packing up my collection of trilobites and decided that I take an inventory. I was poking around on the internet and found someone who was asking if they had purchased a fake one, which I thought looked similar to mine and made me curious about its authenticity. However, it could be that I'm unfamiliar with fossils and unable to tell because I have no clue what I'm looking for. Any help would be greatly appreciated. I'm also new to the website and unsure how to add more pictures, so I'll try to figure out how to add more photos if this one isn't clear enough. (╥﹏╥)
  7. As it doesn't look like I'll be able to get out to collect today, I thought I'd throw the ol' shoulder into some basic prep, and this one presents a few challenges. I did manage to find two full Flexicalymene senaria prones in Brechin, but lost one in the field (doh!). This one is pretty kinked up, almost as though a cartoon iron bar was dropped on its thorax. So, it undulates and stretches accordingly, and it is unclear just how much of it is tucked in the matrix. The first pic is pretty much how I found it.
  8. http://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=2338805&fileOId=2338806
  9. Has anyone purchased the shale that U-dig ships out? Me and the lady are considering getting some but don't want to bother if it's no good and I'm also curious about the sizes of chunks. I work with some guys that buy "pay dirt" for gold and never seem to get anything and I want to avoid that. I realize there's no way of telling but if there's been positive experiences it'll ease my mind. Thanks!
  10. So, the Director of the site (Penn Dixie), recently sent me a photo that was provided by a visitor to the site. This bug was collected from the Windom in May, and before you ask, this is unfortunately the only photo I have to go off of. From what I can see, I am thinking a Dechenella sp., but it has been requested that I try to find a little more info. I thought I would send it out to the bug experts on the forum. I realize that the lack of prep and the existence of only one photo may make this impossible, but I said I would try regardless. The pygidium would be useful, but is not visible. Thank you in advance!
  11. Before I start my story I have to explain something. My wife has been on me about going fossilhunting at Deep Springs so much. She is complaining that I am burning up to much gas on all these trips. So today I told a fib about going fishing at a local stream instead. After I got home I talked to @Ropterus on the phone and when I started to tell him about my morning my wife happened to come out to where I was so I had to give him a different story. So Scott when you read this post this explains why. Anyways I got to Deep Springs about 6:15 am within 15 mins I found another Dipleura thorax and pygidium. I dont know why I keep finding these without the cephalon, but hey I was happy none the less. I found a few poor quality cephalons and a couple Greenops which unfortunately split in the middle. This was another short trip, I left after two hours so I could get back home and spend the rest of my day with my family. This was a great start of a wonderful Fathers Day! The first pic was the Dipleura as found. The rest of the pics were after I got home and trimmed it up a bit.
  12. This is a interesting piece with two specimens (a complete Kettneraspis aff. pigra and an unidentified one) fossilized facing ventrally with respect to one another. Two questions: 1) What period is this matrix?; 2) What species is the incomplete one? Dimensons of cranidium plus first thoraxic segments at the pictures: 1,3 x 1,9 cm Thanks in advance for your opinions. Miguel
  13. LAURIDSEN, B. and NIELSEN, A. (2005). THE UPPER CAMBRIAN TRILOBITE OLENUS AT ANDRARUM, SWEDEN: A CASE OF ITERATIVE EVOLUTION?. Palaeontology, 48(5), pp.1041-1056.
  14. I just finished up a prep for @Fossil-Hound of some E. rana trilobites from Penn Dixie. It was a lot of fun and they were cool to prep. I got to really put my Micro Jack to work! Here are a few pics of a before and after.
  15. Wasn't 100% certain where to put this, so I figured Q&A was as good a place as any. Does anyone here have access to legit Moroccan trilobite material? Specifically unprepped? Ironically enough, I would actually be more interested in incomplete bugs than guaranteed complete ones. I have never prepped any material from Morocco and would really like to take a crack at it. In a perfect world, someone out there has a source and imports flats of quality material and happens to have a pile of "discards" laying around that they would consider parting with on the cheap. I'm on a budget as I'm trying to upgrade equipment, AGAIN! For reasons that are likely obvious to anyone who is into trilobites, I am super interested in getting my hands on some of the gnarly, spiny species out there. But simply purchasing a display piece lacks the romance of having cried over breaking off spines accidentally during prep! I would do unspeakable things for a Walliserops or Comura cephalon, (or something like that.) Alternatively, I would also be interested in similar bits from Black Cat like Dicranurus. Thanks in advance guys! I know it's a tall order, but it can't ever hurt to ask, right?
  16. Flexicalymene, Gravicalymene?... Thanks in advance for your help. Miguel
  17. Llanvirn Series
  18. Acquired from @PaleoPat during a recent trade. This trilobite is originally from Arkona and is uncommon.
  19. Four specimens presented for discussion. I studied several possibilities and, with a huge risk of error on this tricky ones, I present my hypotheses till now. By now just for the genera, of course. 1st and 2nd pics - Kingaspidoides sp. ? 3th and 4th pics - Kingaspidoides sp. ? 5th and 6th pics - Ornamentaspis sp. ? 7th and 8th pics - Latikingaspis sp. ? (a risky call and Geyer, 1990 don't help as all plates with this genus have just partial cranidia). I found just one photo browsing the web to compare (last attachment). Thanks in advance for your opinions. Miguel
  20. I don't have much experience with splitting rocks (just about zero), but I got this nice trilobite in the mail recently. Looking at it, there are some negatives in other layers, so I am wondering what my odds of finding more inside the rock would be. It is fairly thick, but I don't want to damage the big one. Do you think it is a good idea to split it more, or should it be left alone? Is I were to split it, what is the safest way to go about it?
  21. Just got my sand blaster in the mail today. I was looking for some powder, not quite sure where you usually buy it. I have heard dolomite is good. I will be prepping trilobites and fish mainly for now. Anyone have a good place to get it, or any other powder recommendations?
  22. I have no clues, neither information about this one. Any help? Thanks in advance for your opinions
  23. Morocco, Trilobite. bought as part of a lot of fossils. thank you