Sam S Posted April 20, 2018 Share Posted April 20, 2018 I found these two fossils at my camp in munising, Michigan thinking that they were horn coral fossils. But now I am having doubts and am thinking they might be calamite fossils (or some sort of plant fossil). Link to comment Share on other sites More sharing options...
caldigger Posted April 20, 2018 Share Posted April 20, 2018 Looks to be horn coral impressions. 5 Link to comment Share on other sites More sharing options...
Rockwood Posted April 20, 2018 Share Posted April 20, 2018 Agreed. The nodes wouldn't be that close even if such a three dimensional external mold of a calamites were formed. Link to comment Share on other sites More sharing options...
Carl Posted April 20, 2018 Share Posted April 20, 2018 +1 for horn coral Link to comment Share on other sites More sharing options...
Sam S Posted April 20, 2018 Author Share Posted April 20, 2018 Ok thanks for all of your help! Most of the fossils found at this site are corals and bryozoan so it doesn’t make much sense that these two specimens would be calamite. These are definitely horn corals but I think the way that these fossils formed threw me off as this formation of horn coral is uncommon for the site at which I found them. Link to comment Share on other sites More sharing options...
Rockwood Posted April 20, 2018 Share Posted April 20, 2018 2 hours ago, Sam S said: I think the way that these fossils formed threw me off as this formation of horn coral is uncommon for the site at which I found them. Horns are basically growing in a way that keeps them up where they can feed. That means that the shape of their theca varies with the conditions that that individual encounters. Link to comment Share on other sites More sharing options...
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