gorgon Posted June 26, 2018 Share Posted June 26, 2018 Found on shoreline on Grand Traverse Bay, East Arm, @45th parallel. Interesting pattern of dimples within a small bowl like depression. The stone is a light tan color. The lighting on image was adjusted to bring out the dimple pattern more clearly. Link to comment Share on other sites More sharing options...
Rockwood Posted June 26, 2018 Share Posted June 26, 2018 Stone age ball mark on a putting green. Seriously though, I think it's a mold fossil of a tabulate coral. Something like a favositid. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 26, 2018 Share Posted June 26, 2018 Brightened and cropped : 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...
caldigger Posted June 26, 2018 Share Posted June 26, 2018 And as if our foreign members weren't confused enough with the coin size scale references, you go and throw in a half dollar into the mix. Link to comment Share on other sites More sharing options...
Troodon Posted June 26, 2018 Share Posted June 26, 2018 In mm Link to comment Share on other sites More sharing options...
digit Posted June 26, 2018 Share Posted June 26, 2018 We'd be able to date this find better if you hadn't cut off the date on the bottom edge of the half dollar in the photo. Seriously though, I too got a strong coral vibe from your find. I checked the geological maps of the area where you found this item and it appears to be somewhere in the Devonian. https://macrostrat.org/map/#3/40.80/-94.10 Welcome to the forum, hope you choose to stay a while and soak up some fossil knowledge. Cheers. -Ken Link to comment Share on other sites More sharing options...
TqB Posted June 26, 2018 Share Posted June 26, 2018 Could also be a stromatoporoid - I can't see any coral structure (not to say there isn't any). Tarquin Link to comment Share on other sites More sharing options...
Innocentx Posted June 26, 2018 Share Posted June 26, 2018 Better focus would really help. Hard to see the details of your possible coral. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
JohnBrewer Posted June 26, 2018 Share Posted June 26, 2018 5 hours ago, Fossildude19 said: Brightened and cropped : I prefer the original pic, looks like an asteroid John Map of UK fossil sites Link to comment Share on other sites More sharing options...
gorgon Posted July 11, 2018 Author Share Posted July 11, 2018 What first attracted me to pick this stone out of the water was the cup/bowl shape. Next, I noticed the dimpled pattern within the bowl once out of the water. Then upon closer scrutiny there seemed to be shapes nestled within the dimples displaying a similar dimpled pattern. I hope the newly attached pictures will at least justify carrying this one back home. Link to comment Share on other sites More sharing options...
Rockwood Posted July 11, 2018 Share Posted July 11, 2018 On 6/26/2018 at 12:23 PM, TqB said: I can't see any coral structure It would be badly faded. Link to comment Share on other sites More sharing options...
abyssunder Posted July 11, 2018 Share Posted July 11, 2018 May be Entobia, infilled clionaid sponge borings? comparative picture from here " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
gorgon Posted September 17, 2018 Author Share Posted September 17, 2018 Found another piece, flat this time, with identical looking pattern. Link to comment Share on other sites More sharing options...
Innocentx Posted September 17, 2018 Share Posted September 17, 2018 On 6/26/2018 at 11:23 AM, TqB said: Could also be a stromatoporoid I'm tending to agree with this for your pieces. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
gorgon Posted September 20, 2018 Author Share Posted September 20, 2018 backside Link to comment Share on other sites More sharing options...
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