Travis K. Posted September 10, 2017 Share Posted September 10, 2017 I found this while hunting for arrowheads and petrified wood in a river bed in CO. It seems like it might be fossilized coral but I really don't know. Any ideas? Thanks Link to comment Share on other sites More sharing options...
Arizona Chris Posted September 10, 2017 Share Posted September 10, 2017 Those photos are so tiny, can you give us a blow up especially #2. Looks like syringopora tabulate coral but hard to tell. ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
Travis K. Posted September 10, 2017 Author Share Posted September 10, 2017 Thanks for the reply Chris! Are these photos bigger/better? 1 Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 10, 2017 Share Posted September 10, 2017 Welcome to The Fossil Forum; thanks for posting your fossil puzzle. What is it made of? Does a knife scratch it. If a knife sctratches it (calcium carbonate?) then I lean towards a marine fossil. If silica, I wonder if it might be an incompletely silicified piece of wood. The subparallel lines that go from the top to the bottom of below photo might be growth rings or other wood structure. What formation and age is the fossil from? Use this website and point out where you found it: https://ngmdb.usgs.gov/mapview/ My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
ynot Posted September 10, 2017 Share Posted September 10, 2017 Welcome to TFF! It looks like a piece of limestone that has a bunch of worm bore holes in it. Does not look like coral or wood to Me. Does it fizz when You put a drop of vinegar on it? I wonder if it is a colonial tube worm(?)? 2 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Rockwood Posted September 10, 2017 Share Posted September 10, 2017 Feeding traces of cornulites is what they look like to me. Without the tubes it is speculation though. 1 Link to comment Share on other sites More sharing options...
Travis K. Posted September 10, 2017 Author Share Posted September 10, 2017 28 minutes ago, ynot said: Welcome to TFF! It looks like a piece of limestone that has a bunch of worm bore holes in it. Does not look like coral or wood to Me. Does it fizz when You put a drop of vinegar on it? I wonder if it is a colonial tube worm(?)? I soaked and cleaned it with vinegar then power washed to get the moss off and it didn't fizz or erode in any way. It didn't clean up very well either. Ha Link to comment Share on other sites More sharing options...
doushantuo Posted September 10, 2017 Share Posted September 10, 2017 The holes look slightly like acrothoracid cirriped borings to me edit: alternatively,possibly bark beetle????(or insect,anyway?) edit: Xylokrypta ?? Link to comment Share on other sites More sharing options...
Travis K. Posted September 10, 2017 Author Share Posted September 10, 2017 2 hours ago, DPS Ammonite said: Welcome to The Fossil Forum; thanks for posting your fossil puzzle. What is it made of? Does a knife scratch it. If a knife sctratches it (calcium carbonate?) then I lean towards a marine fossil. If silica, I wonder if it might be an incompletely silicified piece of wood. The subparallel lines that go from the top to the bottom of below photo might be growth rings or other wood structure. What formation and age is the fossil from? Use this website and point out where you found it: https://ngmdb.usgs.gov/mapview/ I cant scratch it very easily. It doesn't seem to be the same composition throughout. I can somewhat scratch some areas an others are very hard. I scrubbed it using vinegar and a stainless steel brush and power washed it and it didn't damage it at all. I have no idea how to pinpoint is origin. I found it in the S. Platte river northeast of Denver, so it could have come from anywhere in the drainage basin. I have been finding loads of petrified wood of all different types in the same area. Sorry, not much help. 1 Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 10, 2017 Share Posted September 10, 2017 I'm now leaning towards petrified (silicified wood) possibly palm. The holes may be the vascular bundles. Palm wood has been found near Denver: See my photo of palm wood below from California. Notice wavey vascular bundles- sort of like the ones in your fossil. 2 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Travis K. Posted September 10, 2017 Author Share Posted September 10, 2017 14 minutes ago, DPS Ammonite said: I'm now leaning towards petrified (silicified wood) possibly palm. The holes may be the vascular bundles. Palm wood has been found near Denver: See my photo of palm wood below from California. Notice wavey vascular bundles- sort of like the ones in your fossil. Thanks! I appreciate the info. I searched for other examples of petrified palm wood and it looks similar. Link to comment Share on other sites More sharing options...
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