jguten162 Posted July 14, 2021 Share Posted July 14, 2021 Hey everyone. I found these in a creek while traveling around Ohio. The areas are known for fossils, but I can't tell if these are actually teeth or if they are just some kind of rock formation. Any insight would be much appreciated. Link to comment Share on other sites More sharing options...
caterpillar Posted July 14, 2021 Share Posted July 14, 2021 Coral 1 http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
FranzBernhard Posted July 14, 2021 Share Posted July 14, 2021 (edited) Welcome to TFF from Austria! These are sweet rugosa corals, aka horn corals, of Paleozoic age. In the second pic, you can clearly see the so-called septa in many of them. Rugosa (link to wikipedia) Edit: Classification as rugosa corals (not scleractinia corals) is based on the state they were found in. Franz Bernhard Edited July 14, 2021 by FranzBernhard 1 1 Link to comment Share on other sites More sharing options...
jguten162 Posted July 14, 2021 Author Share Posted July 14, 2021 Awesome. Thanks for the help Caterpillar and Franz! 1 Link to comment Share on other sites More sharing options...
ClearLake Posted July 14, 2021 Share Posted July 14, 2021 If you were in SW Ohio (Cincinnati area roughly) they are almost certainly Ordovician in age and either the genus Grewingkia or Streptelasma. Link to comment Share on other sites More sharing options...
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