Matt_Digz Posted October 20, 2017 Share Posted October 20, 2017 Link to comment Share on other sites More sharing options...
ynot Posted October 20, 2017 Share Posted October 20, 2017 First impression- trace fossil. Would like to see the end views. 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...
Matt_Digz Posted October 20, 2017 Author Share Posted October 20, 2017 Found this in southern indiana Link to comment Share on other sites More sharing options...
ynot Posted October 20, 2017 Share Posted October 20, 2017 I still think it is a trace. It has the same texture as the surrounding rock. Track or burrow. 1 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...
piranha Posted October 20, 2017 Share Posted October 20, 2017 Actually it is a stromatoporoid: Aulacera (=Beatricea) undulata figure from: Shimer, H.W., & Shrock, R.R. (1944) Index Fossils of North America. Massachusetts Institute of Technology Press, 846 pp. 4 Link to comment Share on other sites More sharing options...
westcoast Posted October 20, 2017 Share Posted October 20, 2017 I was going to go with groove cast. Link to comment Share on other sites More sharing options...
ynot Posted October 20, 2017 Share Posted October 20, 2017 8 minutes ago, westcoast said: I was going to go with groove cast. Good thing @piranha came along with the right ID. He is so good at this. 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...
abyssunder Posted October 20, 2017 Share Posted October 20, 2017 excerpt from T. E. Bolton. 1988. Stromatoporoidea from the Ordovician rocks of central and eastern Canada. Contributions to Canadian paleontology, Geological Survey of Canada Bulletin 379:17-45 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
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