Northern Sharks Posted April 9, 2008 Share Posted April 9, 2008 I have 3 patio stones around my patio (DUH??? ) and they are all covered with these fossils. They are about 1 cm long, give or take, and likely from either Ordovician or Silurian origin as that's what I'm surrounded by. Since I bought these at a landscape place, I can't be a whole lot more specific. Any help with identifying my slabs is appreciated. There's no limit to what you can accomplish when you're supposed to be doing something else Link to comment Share on other sites More sharing options...
Guest solius symbiosus Posted April 9, 2008 Share Posted April 9, 2008 Hmm, hard to tell. They could be worm burrows, or Bryzoa colonies. Crack a small piece off and see if there is any internal structure. Link to comment Share on other sites More sharing options...
Northern Sharks Posted April 10, 2008 Author Share Posted April 10, 2008 Hmm, hard to tell. They could be worm burrows, or Bryzoa colonies. Crack a small piece off and see if there is any internal structure. Ooooh. Probably not gonna happen. The stones are cut square, not rough, so breaking a corner off would show. These are all fairly consistent in length with none longer than the penny. I would think worm burrows would have more variations. I don't know a thing about bryzoa. My thinking was maybe some kind of coral, so bryzoa seems more likely. Also, the stones are about 1'x2' and covered in these. Do worm burrows get that concentrated? There's no limit to what you can accomplish when you're supposed to be doing something else Link to comment Share on other sites More sharing options...
Guest solius symbiosus Posted April 10, 2008 Share Posted April 10, 2008 Yes, burrows do get very dense. When taking a chip, take a very small chip off one of the "burrows", and put some magnification to it. If it is Bryzoa, you should see small tubes radiating out from the center. This is one mag. 10X Link to comment Share on other sites More sharing options...
PaleoRon Posted April 10, 2008 Share Posted April 10, 2008 My impression of your impressions is that they are burrows of some type. Link to comment Share on other sites More sharing options...
Guest N.AL.hunter Posted April 10, 2008 Share Posted April 10, 2008 Again I am no expert, and it is hard to tell much from pictures, but they might be crystalline in nature and not fossils. Even sedimentary rock can have crystalline structures, specially if they have been exposed to pressure when solidifying. Look for finer details to see if they have anything resembling parallel lines. If they do, then fossil. Link to comment Share on other sites More sharing options...
jkfoam Posted April 10, 2008 Share Posted April 10, 2008 Interesting structure. I would think that burrows would not be so straight or short, but I don't really know that much about burrows. My first thoughts on seeing the photo was that I was looking at sponge spicules. But again, sponges are a fossil group that I have never been that interested in. JKFoam The Eocene is my favorite Link to comment Share on other sites More sharing options...
MOROPUS Posted April 10, 2008 Share Posted April 10, 2008 I agree with some kind of burrows.Cruziana? Link to comment Share on other sites More sharing options...
CURT Posted April 10, 2008 Share Posted April 10, 2008 I have 3 patio stones around my patio (DUH??? ) and they are all covered with these fossils. They are about 1 cm long, give or take, and likely from either Ordovician or Silurian origin as that's what I'm surrounded by. Since I bought these at a landscape place, I can't be a whole lot more specific. Any help with identifying my slabs is appreciated. Sure look like worm burrows to me. Link to comment Share on other sites More sharing options...
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