Carl Posted October 11, 2023 Share Posted October 11, 2023 Hi all, a friend of a friend found this on the most northern point of Lake Superior, off Copper Harbor. I suspect it is fossil but to my eye it just strikes me as modern. Maybe escaped aquarium coral. But this person also claims to have found other pieces of corals there. Might anyone be able to say if this agrees with fossil corals of that area or is it a taxon not to be expected from the Paleozoic? Thanks! 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted October 11, 2023 Share Posted October 11, 2023 @digit @TqB @Tidgy's Dad Cropped and contrasted: 4 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...
TqB Posted October 11, 2023 Share Posted October 11, 2023 (edited) I'm pretty sure it's modern; scleractinian anyway. Definitely not a Palaeozoic one. Edited October 11, 2023 by TqB 1 1 3 Tarquin Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted October 11, 2023 Share Posted October 11, 2023 Yes, I agree with Tarquin; a scleractinian coral that looks modern. 1 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
trilobites_are_awesome Posted October 11, 2023 Share Posted October 11, 2023 I have found coral there to. It's not uncommon. Cheers! James Link to comment Share on other sites More sharing options...
digit Posted October 11, 2023 Share Posted October 11, 2023 Definitely not a horn coral and certainly not a Petoskey Stone (Hexagonaria) nor a Charlevoix Stone (Favosites), nor Organ Pile (Syringopora), nor Chain Corals (Halysites). I don't know my midwest fossil corals as well as I know my extant species but this find does not seem to clearly fit into any of the normal types of fossil corals that can be found in Michigan. I suspect (as others do) that this one was relocated in the Anthropocene to the location where it was found. If it is a fragment of a modern coral picked up while beachcombing and (confusingly) dumped off on a distant beach sometime later then it may be a coral in the genus Siderastrea or Stephanocoenia. Cheers. -Ken 2 Link to comment Share on other sites More sharing options...
Carl Posted October 11, 2023 Author Share Posted October 11, 2023 Aha! Sounds like my suspicion may have been correct! Thanks, all! 1 1 Link to comment Share on other sites More sharing options...
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