Beth929 Posted May 2, 2017 Share Posted May 2, 2017 It is not rounded but weathered. One and 1/2 inch. Link to comment Share on other sites More sharing options...
Peat Burns Posted May 2, 2017 Share Posted May 2, 2017 Definitely coral. Probably Hexagonaria (Petoskey stone) Link to comment Share on other sites More sharing options...
Beth929 Posted May 3, 2017 Author Share Posted May 3, 2017 Thanks. But there does not seem to be any "frames" on my specimen - the octagonal honeycomb wall like things that surround the "dots" on Petoskey stones? Maybe just to weathered. Link to comment Share on other sites More sharing options...
Peat Burns Posted May 3, 2017 Share Posted May 3, 2017 25 minutes ago, Beth929 said: Thanks. But there does not seem to be any "frames" on my specimen - the octagonal honeycomb wall like things that surround the "dots" on Petoskey stones? Maybe just to weathered. Yours is weathered / eroded a bit, but sometimes the polygonal pattern so familiar with "Petoskey stones" is made more evident when the fossil is so eroded that the depressions (corallites) are completely worn flat (as for example beach worn or artificially tumbled specimens). Yours still has the depressions, which kind of makes the polygonal pattern less evident. I'll try to post a picture of one of my "virgin" unworn quarry specimens tonight for comparison. Link to comment Share on other sites More sharing options...
Peat Burns Posted May 3, 2017 Share Posted May 3, 2017 @Beth929, here is a picture of some specimens of mine. The small one on the left is beach worn, the one shaped like the lower peninsula of Michigan is cut and artificially polished, and both of these are sitting on a large piece of mostly unworn coral taken directly from a rock exposure (in this case, a quarry). Link to comment Share on other sites More sharing options...
Beth929 Posted May 3, 2017 Author Share Posted May 3, 2017 Wow, now my rock makes sense. Thanks. Link to comment Share on other sites More sharing options...
Peat Burns Posted May 3, 2017 Share Posted May 3, 2017 Just now, Beth929 said: Wow, now my rock makes sense. Thanks. You are very welcome. Glad to help Link to comment Share on other sites More sharing options...
Beth929 Posted May 3, 2017 Author Share Posted May 3, 2017 Sorry to bug you, but do you think this horn coral has a bit of petoskey stone? I asked about this 4 years ago here and they thought not but I still have hope.my horn coral Thank you for the great info. Link to comment Share on other sites More sharing options...
Peat Burns Posted May 3, 2017 Share Posted May 3, 2017 12 hours ago, Beth929 said: Sorry to bug you, but do you think this horn coral has a bit of petoskey stone? I asked about this 4 years ago here and they thought not but I still have hope.my horn coral Thank you for the great info. Yes, in my opinion based on the photo, that does appear to be two corals; a horn coral and a probable Hexagonaria. Not sure if the latter grew on top of the former or if they just ended up together in the sediment / rock. Don't worry about asking for info. We love to see fossils and help if we can! Link to comment Share on other sites More sharing options...
Beth929 Posted May 3, 2017 Author Share Posted May 3, 2017 That's great! I bet that's rare. I'll try to clean and polish it up. (can't tumble Petoskey's - too soft) Thanks much. Link to comment Share on other sites More sharing options...
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