Brianp Posted July 19 Share Posted July 19 Found this in my yard today while installing fence posts in suspect coral of some sort bay county, michigan thanks Link to comment Share on other sites More sharing options...
TqB Posted July 20 Share Posted July 20 (edited) Yes, it seems to be a well worn colonial rugose coral - septa are just about visible when you zoom in. There's not enough detail to ID it from first principles but Hexagonaria is one strong possibility for that area. (A lot of people would just say "Petoskey Stone" which strictly is only Hexagonaria percarinata. It should grind and polish well which would allow a firm ID.) Edited July 20 by TqB 2 Tarquin Link to comment Share on other sites More sharing options...
Brianp Posted July 21 Author Share Posted July 21 Thank you Link to comment Share on other sites More sharing options...
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