Mr. Rock and Roll Posted June 28, 2017 Share Posted June 28, 2017 Maybe some type of Brachiopod, or Coral Link to comment Share on other sites More sharing options...
izak_ Posted June 28, 2017 Share Posted June 28, 2017 Welcome! Where was this found and how old is it? I have never seen anything like that but thats not really saying much Link to comment Share on other sites More sharing options...
Mr. Rock and Roll Posted June 28, 2017 Author Share Posted June 28, 2017 It was found near Dickson TN and I don't know the age, but considering it was found in a sandstone deposit. I would have to say based on that it is a relatively new fossil. Link to comment Share on other sites More sharing options...
Harry Pristis Posted June 28, 2017 Share Posted June 28, 2017 Likely a solitary coral. 3 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
BobWill Posted June 28, 2017 Share Posted June 28, 2017 Welcome to the forum. The formation isn't young because it's sandstone. It's sandstone because the sediments the rock formed from were sand and so likely deposited near shore. I collected some corals that were reddish sandstone south of Dickson a few years ago and I believe they were either Pennsylvanian or Mississippian Period, so roughly 300 million years old or more. They were from an unfinished road behind a motel off of Hwy 40. They didn't look like yours but I believe Harry is right with coral. Maybe someone else will know more about them. 3 Link to comment Share on other sites More sharing options...
Rockwood Posted June 28, 2017 Share Posted June 28, 2017 It should come as no surprise that these are often referred to as button corals. 3 Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 28, 2017 Share Posted June 28, 2017 @TqB 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 June 28, 2017 Share Posted June 28, 2017 It's certainly a "button coral". Of Palaeozoic ones, I don't know of any from the Carboniferous but there a few lower down - this could be Microcyclus sp. which is Devonian (or something similar - there are a few possibilities and a specialist might be needed). Knowing the age would help a lot... Here's the plate from the Treatise - I think the first photo is of the convex calicular (top) surface, like 1d in the plate. 1f is the corresponding basal view. The epitheca (outer layer) isn't very well developed on the base, and was perhaps worn off before burial or is still stuck in the counterpart, so you can see the septa on it as well as on the calicular surface. There's a similar one called Combophyllum that has no epitheca at all but that isn't listed from the US. 4 Tarquin Link to comment Share on other sites More sharing options...
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