New Members JDW Posted June 26, 2023 New Members Share Posted June 26, 2023 Hello all, I am an amateur scientist from Southwestern Indiana and came across this interesting sandstone boulder while hiking an old surface mine area near me. I first thought it was man made but it has too many layers and definitely sandstone. Any one know more about this type of pattern? Thanks for any help. 1 Link to comment Share on other sites More sharing options...
Darktooth Posted June 26, 2023 Share Posted June 26, 2023 Without close-up pics, hard to say for sure, but looks like a cluster of coral. I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
New Members JDW Posted June 26, 2023 Author New Members Share Posted June 26, 2023 Definitely not coral as it's all the same sandstone material. It's very brittle and falls a part easy as I couldnt retrieve a good piece. There are layers with in the boulder. I should have taken better pictures with measurements but was unprepared. The "tubes" are about 1 cm to 1.5 cm wide. I will make another trip to the site with some tools and retrieve a slab hopefully. Link to comment Share on other sites More sharing options...
Kane Posted June 26, 2023 Share Posted June 26, 2023 Are you sure it is sandstone and not limestone? The matrix colour seems off for sandstone. I have encountered similarly busy ichnofossils that I generally call “worm burrows.” ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
New Members JDW Posted June 26, 2023 Author New Members Share Posted June 26, 2023 I am not certain of the stone material...but it rubs loose with the touch and is quite delicate like sandstone. Link to comment Share on other sites More sharing options...
Rock-Guy-17 Posted June 27, 2023 Share Posted June 27, 2023 I posted a smaller, but similar piece a few years ago from the Medina Group sandstone in NYS. A member here informed me the trace fossil burrows were called palaeophycus. Link to comment Share on other sites More sharing options...
westcoast Posted June 27, 2023 Share Posted June 27, 2023 These look like a very good example of trace fossils. Assigning a name may be difficult. 1 1 Link to comment Share on other sites More sharing options...
New Members JDW Posted June 27, 2023 Author New Members Share Posted June 27, 2023 Thank you all for your great insights and welcoming a fledgling. I plan to make a trip back to the sight and hopefully get some great samples for some detailed research. Keep curious. Link to comment Share on other sites More sharing options...
New Members JDW Posted April 25 Author New Members Share Posted April 25 It has been almost a year since I discovered this rock and the Fossil Forum (awesome site) asking for help identifying it. I revisited the site to get better pictures and have done some research on the trace and found a research paper describing the formation (Spirocosmorhaphe, A New Graphoglyptid Trace Fossil) https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/spirocosmorhaphe-a-new-graphoglyptid-trace-fossil/392963AD0F84A65435AE91F94B049E56# 2 Link to comment Share on other sites More sharing options...
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