NCRockSnob Posted April 27 Share Posted April 27 According to the seller, this is Hexagonaria from Manchester, Iowa. I can only find pictures of two of the ten Hexagonaria species H. percarinata (aka Petoskey stone) and H. mirabilis. It looks more like H. mirabilis than H percarinata, but the picture isn't great. My fossil also looks like Lithostrotionella and Acrocyathus floriformis. Any way to be sure what I have? 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 27 Share Posted April 27 Usually, thin sections of the corals are needed to ID to species level. I believe Acrocyathus is the new name for Lithostrotionella. If the location is correct, it could be a Silurian aged coral, which might point to Arachnophyllum. Have a look at this website: LINK 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
NCRockSnob Posted April 27 Author Share Posted April 27 (edited) Thanks. I'll check it out. Are you ruling out Hexagonaria? Edited April 27 by NCRockSnob Link to comment Share on other sites More sharing options...
NCRockSnob Posted April 28 Author Share Posted April 28 Thanks for the website. My specimen looks just like Acrocyathus floriformis as shown https://www.uky.edu/KGS/fossils/fossil-month-Acrocyathus.php Link to comment Share on other sites More sharing options...
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