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Found 11 results

  1. I dont know if this is the appropriate place to ask but I thought I would go to the source to ask. Looking for people that have some crab from NZ that they wouldn't mind working a deal. trade or sell. PM me if you or someone you know can help. It's one of the fossils I'm looking to add to the collection and since I love to prep it should be a win win.
  2. I went on a fossil trip to the state of Washington and bought a bunch of fossil concretions, agatized Aturia and clams and a couple other odd things. Whilst buying and making trade deals, part of one deal was to do my majic on this large crab in a concretion. Funny thing is, I knew this crab from several years ago. I offered the guy who found this crab money for it every year for a few years but he just didnt want to let go of it. I cant blame him, its a really big crab. He had traded it to my new freind for a really really nice and really exspensive agatized Aturia. As part of a trade I offered my services and told him I go do my majic on it. He had heard of me and seen some of my work so he let me bring it home. Seems like im getting known as the 'Crab Guy'? Nice. So, today I went on the prep attack on this rock. Its got a really soft 'rine' and trying to save it is really hard. Lots of glue. also removed lots of rock to get it to where I want so I can do the 'smoothing' and make the rock contour to the crab. The guy who prepped this out went really deep in places, so its making for more difficulty and not what im used to. Gunna be interesting to see this play out. 1sr pic is how I received it. 2nd pic is me trying to save the 'rine'! 3rd pic is after a bunch of rock removal. A long ways to go still. RB
  3. It was 2 or 3 years ago right here on The Fossil Forum when guy posted a picture of this crab concretion and I got sooooooo excited that I had to message him and ask him if we could make a deal. yWell, we did make a deal, and its been sittin in my garage since then. Ive looked at it many, many, many times and was always scared to get started on it. Well,, today, I brought it out again and took a really good look at it. and yes, i was scared all over again! I could not read ventral or dorsal for the life of me just like all the other times ive looked at this thing ! Being a very big concretion I knew that I would have to 'dig' a hole and hope I hit dorsal and that would take a lot of time removing lots of rock just to find out! I made a drink and then made some phone calls and talked to some folks just to stay away from the actual beggining of getting this dang thing started. Then it was time. I did the best I could do at guessing what side was 'dorsal'? Did this about 20 times in the last 2 or 3 years and always put it back in the box. Ive always known with the Washington crabs that the flatterside is dorsal, but with these Tumido crab concs from New Zealand, the flat side can sometimes be the ventral side. I learned that the hard way, so now you see how I can be so scared. Maybe im just a chicken? Here is almost 4 hours of prep work removing rock. and I hit carapace!!! WooooooHoooooo!!! and its not calcited!!! thats a triple diple WoooooooooHooooooo!!!! Life is just gooder than pecan pie!!! oh, hard to tell by the ruler from the camera angle, but this rock is over 10 inches wide!!! yeah, a big concretion. RB
  4. Kath001A.JPG

    From the album Fossil Crabs

    Best one of these ive ever seen. Lots of leg. New Zealand.
  5. I.D. help - Fossil crab

    Crab is in a tile
  6. Been doing some preparation work on this and it was the best gold crab I've done to date.
  7. Hello What Is This Id Of This Fossil Crab?

    Hello what is this id of this fossil crab? the seller told me he dont think this is a asia crab fossil though has he never seen an asia crab fossil like this one before.
  8. Tumido Prep Number 3

    Time to start crab number 3. The first one was a "starter crab" incomplete but good to practice on. The second was a big sucker - finally got the proper tools towards the end. Took over 200 hours using engravers - never again! Engravers do nowhere near the same job as the ME-9100 and microjack. The rock just doesn't flake offf as well. Particularly for bulk matrix removal. I spotted this concretion and no evidence for a crab was there. No legs. So I split it open It's about 30 cm across. So quite a large concretion for this locality. Looks like all the legs are there, right to the tips. Yay! I then glued and clamped after supergluing in any frags that had fallen off. I used a 2 part epoxy to give me time to work. I then scribed a score mark and got to work with the chisel. This is the best way to remove bulk matrix if you don't have a mighty-jack or similar larger air chisel. I could tell where I might encounter crab since I had a preview via the split. Got to allow that the legs might be on weird angles and I stopped when I saw the tip of a leg, and then scribed a "window" down to the top of the carapace. You can just see it in the middle. Luckily in this concretion the rock starts to change colour just before the shell - goes a rusty orange. Here's where I am at now. Exposed the hind end - articulation of the hind legs and started to work out where the hind legs go. Next to expose the rest of the legs and the front - the two pincers. The only issue with this crab is that the carapace is very fragile at the front end, a thin (< 1mm) layer of the darker brown shell peels off. I found this on my previous crab, the rest of the shell is robust and the matrix flakes off easy - with the ME-9100. Just around one particular area on the front end in an area about the size of a nickel where the distinctive patterning tends to be. Last time I just had to go easy with a low setting on the Microjack. I guess this is where an air abraider would come in handy. You can see I've left the matrix on there for now. I've left that bit for later at the start of a session when I'm fresh - also might skip the coffee before that session!. Stay tuned - more work this week after a Sunday break.
  9. TFF member MB has coauthored another excellent paper on a spectacular crab from the Grayson Formation in Waco, Texas. This exciting discovery represents one of only a few times a fossil crab with composite eyes is preserved and probably the first occurrence of three-dimensional crab eyes in the fossil record. Congrats Àlex!! Vega, F.J., Jackson, J., & Ossó, À (2014) Exceptional preservation of a late Cenomanian (Late Cretaceous) crab from Texas, U.S.A. Boletín de la Sociedad Geológica Mexicana 66(1):215-221 OPEN ACCESS PDF
  10. I'm looking for a very experienced crab prepper for two concretions I've had sitting in my garage for a while. One I believe is some type of Raninidae from the Lincoln Creek formation. The other is a Cretaceous lobster from the Bearpaw shale which based on the preservation of the tips of the claws and tail protruding I think it's going to be a killer one. I'd prep them myself but I've got years of trilobite prep projects already lined up.
  11. Another boxed up find from cleaning out the garage this weekend. It's a crab concretion I collected years ago from the Lincoln Creek formation. It's certainly not one of the more common crabs from there, and based on some initial research appears like it could possibly be a Raninidae. Kinda hard to tell because it's broken on the underside and there's a jumble of legs and claws. Any insight would be appreciated.
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