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  1. Fossil Fen

    Lobster Prep Advice

    Hello All, I came across this fossil at a local rock and gem store and I'm having a go at preparing it. Apparently it is from Indonesia and I believe is a Thalassina, although with the spindle like legs I haven't seen anything that looks like an exact match. Here's my question; the fossil is covered with a sticky coarse sandstone, and I'm wondering how much of the matrix I should leave between joints in the tail and between the legs on the main body. I'm not sure if removing too much matrix will just cause the fossil to fall apart, but I suspect it might. Has anyone had
  2. Late Start Fossil Girl

    Are these tracks??

    My husband purchased this landscaping rock in a pallet from a Bath/Bethlehem, PA area supplier about 20 years ago. Most of the supplier’s stones are from Pennsylvania. I’m guessing this is sandstone??? I’ve been staring at this rock for sometime and before I place it back, I wanted to get some opinions if anyone sees any type of tracks on this rock? I feel like my fingers fit in the specimen very nicely. Can’t tell if I’m seeing 3, 4 or 5 “toes” ? Maybe I’m just an imaginative newbie. Thanking anyone in advance who looks at these photos.
  3. Given a sample of sandstone that appears uniform to the naked eye, how can one determine where the bedding planes are? Are there magnification/chemical or other tricks in our tool box?
  4. Dblackston

    Ireland Sandstone Ripple Marks

    We found this yesterday outside of Sedan Kansas on a 4-H Geology field trip. It was with a thinner layer of sandstone just below a thick layer of Ireland sandstone. One of the leaders thought it was ripple marks. I also thought it looked like ripple marks but wanted a second opinion. We would hope to be able to display this in her geology exhibit as a fossil if it is truly ripple marks.
  5. Lone Hunter

    Trace fossil ID

    Eagle Ford sandstone, found a cool trace fossil and curious what made it. Could only find one somewhat distinguishable thing and really can't tell what it is other than looks like shell. Lots of burrows and maybe worm? Found several little circles with dot in the middle but hard to get all images. The trace looks like a sperm best way to describe it.
  6. aasandy

    ID help

    Hello I found this piece of sandstone along the Athabasca river just south of Fort McMurray, Alberta, Canada. Since it’s sandstone I’m assuming it came from either the Mcmurray (late barremian or early Aptian) or Grandrapids (Albian) formation although my geology skills are not great. I tried to do some googling on what it could be but I found no results since I couldn’t be specific enough since I don’t really know what I’m doing. Any ideas? I attached an image of the location for fun that I took a while before I found the rock. I found it to the right of the creek tha
  7. JohnDoetheDJ

    ID Ceratitida Ammonite?

    Hello everyone I wanted to know what exactly I have inhereted from my great-grandfather, he mainly collected minerals and other geological stuff and I never really managed to talk with him about the stuff sadly. While I don't know the exact location of where it was found I am able to pinpoint the region to the southern region of Palatinate in Germany due to the Red Sandstone found in the region and (what seems to be) a small Melanite on the stone with it, which is common in the neighbouring state where I also have relatives which he often visited during his lifetime. All help
  8. Lone Hunter

    Indian artifact?

    Went down to the creek this morning to release some fingerling blue gill I raised and stumbled across this. Picked it up because I liked the unusual shape but then noticed one of the grooves looked altered, like it was rubbed or ground. Last year I found a Trinity sinker and Castorville arrowhead in same spot, so started researching artifacts and saw arrow shaft straighteners which this resembles. It doesn't look straight at first glance but a pencil fits in there perfectly. Coincidental and geological? Also found this neat peice of rock and wondering if it's flint? This area of creek is QAL
  9. MIrocky

    Lake Michigan Help Please

    Greetings all! Recently pulled this from south shore Lake Michigan near the Mack Straights. Curious as to what the fossilized material is inside the upper shell half which is approximately 2.5cm across. Any ideas? Bonus points if you can identify the shell too Thank you!
  10. Rock-Guy-17

    Trace Fossil ID from Western New York

    I found a few plates of sandstone that I really liked a few years back in Lockport, NY. I believe they are from the Silurian Grimsby formation. I don't remember nearly anything about trace fossils. My first guess from just googling before making this post was arthrophycus. Can anyone tell me what kind of trace fossil is present in these pieces? 1. 2. 3. 4.
  11. TheSilverWolf98

    Mineral or Fossil?

    Hi all. Yesterday, I went on my first fossil hunt in about fourteen years. Went back to one of my old haunts, Jan Juc beach on the south coast of Victoria, Australia (Oligocene deposit - mostly mud and sandstone). I was expecting to find the usual - sea urchins, small crabs, coral, sponges etc. Instead I found a big, dark thing. A thing is all I can describe it as - buried in sandstone with the eroded top showing, I initially thought it could be a toe, or maybe some petrified wood. Once I moved the boulder to my garden and attacked it with a small hammer, what popped out was a little puzzlin
  12. Normally this sandstone is filled with bivalves and snails of various species in the loosely consolidated. The "rust" color almost always is a biological marker in this sandstone. All of the bivalves and gastropods have that coloration. This specimen was found when a smallish piece of sandstone was separated in half. This half has the "head" I think, the other part has most of the cast of the body (this whatever it is, is bilaterally symmetrical). The only paper I have does not mention annelids. Anyone want to take a guess what this is, sending it to a "real" paleontologist to get an opinion
  13. Hi everyone, Sorry if this is a bit of a basic question, but I'm fairly new at this and seem to be finding conflicting information about what I'm looking for. I recently found a number of fossil urchins, and what I think look like will probably turn out to be shells enclosed in sandstone on a beach. Some are pretty clean and only have a small amount of sandstone adhering to them, but others are almost completely buried in the piece of rock with only little bits of the fossil exposed. I was wondering what the best way to remove the rock is without damaging the fossil? I've tried soaki
  14. A friend likes to pick up rocks and other assorted things at estate sales. Then he brings them to me for ID. But this one is not in my areas of expertise. It seems like I've seen these for sale at rock shops, not sure. And, I'm not certain it isn't some kind of nodule or pseudo-fossil. The matrix is sandstone, with rusty iron color when scratched with fingernail. Also, because it was purchased, its natural location is unknown. il.
  15. Cibarnes

    Petrified Wood?

    Ok, this is my first post, and I think I read the rules right, so if I didn't do anything right just let me know and I'll fix it. So I bought this boulder off a guy. It's about 3 ft long, 2 ft wide, and weighs about 200 lb. The guy told me that it probably came from Kansas or Minnesota. He couldn't remember very well. But I am in Lincoln Nebraska so I suspect it's probably Kansas. I asked a guy for information about it here in Lincoln. Specifically I asked him if this was a petrified log and if the big lump on the side was a concretion. He said that "This is a weat
  16. FossilNovice34

    animal impression/footprint?

    Greetings- I found this rock with kids in Montgomery County, Pa., USA, along creekbed. I believe it's a type of sandstone- the Brunswick and Lockatong formations run through county (apologies-I'm just learning geology, it's red-brown). Curious if this is an animal impression? Footprints are known to be found in the area. Photographed at different angle lights, as it looks so different depending. My son showed at school as a fossil- wanted to give him an informed answer. Thanks so much!
  17. I think I've found my "home" here. I have well over 50 pieces (a couple are large - 10-25 pounds) of formation that I've collected over the last three months to "investigate". Mostly sandstone and what I think is deep water mudstone (thought it was shale at first but no layering). Will try the Hydrogen Peroxide to dissolve the sandstones but am at a loss for the mudstones. the mudstones are extremely hard but contain lots of micro deep water (>200 meters) fossils. Any advice? I've included an image in the what I think is a softer mudstone higher up in the Keasy. This is juvenile
  18. Jamie Kenton

    Intrigued

    I have come across a fossil and i’m curious to know a bit more about it with the help from you guys! Many thanks
  19. Andy Craddock

    Calamite

    I’m a landscape gardener & came across this fossil in a piece of new quarried sandstone walling. I’m assuming it is some form of Calamite but what’s puzzling me is the solid form that weaved through the middle of it. The specimen is approximately 100mm long & 40mm across the stem. All opinions welcome, I’m keen on geology & fossil hunting in general but I’m no expert! Thanks, Andy
  20. BluesharkRay

    Teeth? Bone?

    Teeth? Or am toothbrushing rocks? Sand continues to shed and seem to be shaping. Hunt County. Bazaar Sedimentary rock. Only one I've seen like it. Looks like sea coral . Hunt County. I would have completely discounted this because of how white it is except for how it was found and how it looks.
  21. Hi all, Upon examining some of my finds from this hunt about a month ago, I realized that there was an anomaly on one of the Neuropteris ovata pinnules. Initially I brushed it off as nothing more than an anomaly, but last night while I was doing some reading I came upon an intriguing paper on insect galls from the Carboniferous. Some of the gall fossils included bore a striking resemblance to the gall on my frond, and so I figured I would make a post to see if any of you had an idea on what it could be. Here is the frond, in full view:
  22. Hello everyone! Just got home from my weekly vacation and started immediately the preparation. The matrix is soft, mostly loose sandstone and once wet you can process it easier. Right now I have no power tools, only some screw drives and picks. The process seems that will take a lot of time. Any advice is welcome. I also need advice concerning some issues. 1. One urchin that after making it wet, a crack was revealed. There is possibility that the crack expanded by half millimeter. How I treat that? Naturally dry it and application of 20% paralo
  23. gdsfossil

    Vertebrae or Concretions?

    Still learning my formations. Found these close to the bottom of the Dakota Sandstone formation in Kansas.
  24. nikkisixx

    Bone or Sandstone with shell bits

    Found in clay soil, Cerritos, California.
  25. Winter Hobby

    Removing hard matrix

    I dug this up in Wyoming and was told it's a Mioplosus. The soft sandstone came off with only a bit of effort. Now I'm on to a harder crystalized matrix around the most delicate areas. I don't want to lose any of the carbon so I'm asking for help. I've used dental tools and pen razors so far. I see amazing, beautifully completed fossils on this site with no sandstone on them at all. Is there a method or tool I am unaware of?
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