New Members JerBer Posted November 9, 2009 New Members Share Posted November 9, 2009 (edited) This was found on the Yellowstone River in North Eastern Montana. It resembles a mushroom cap. I understand that mushrooms do not fossilize. I suspect that it might be a tooth, but cannot explain the ridges on the underside. Any help would be appreciated. Edited November 9, 2009 by JerBer Link to comment Share on other sites More sharing options...
Nicholas Posted November 9, 2009 Share Posted November 9, 2009 That looks to be a worn Horn coral. Link to comment Share on other sites More sharing options...
Xiphactinus Posted November 9, 2009 Share Posted November 9, 2009 That looks to be a worn Horn coral. I'll second that... Link to comment Share on other sites More sharing options...
barefootgirl Posted November 9, 2009 Share Posted November 9, 2009 Horn coral is my best bet. Congrats on your find and good luck in the future finding more. In formal logic, a contradiction is the signal of defeat: but in the evolution of real knowledge, it marks the first step in progress toward victory. Alfred North Whithead 'Don't worry about the world coming to an end today. It's already tomorrow in Australia!' Link to comment Share on other sites More sharing options...
Bear Posted November 9, 2009 Share Posted November 9, 2009 Agreed. The bottom is the narrow part that shows where the coral broke off of the rock it was attached to in life. The ridged section faced up to catch detritus for the colony to feed on. Link to comment Share on other sites More sharing options...
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