These rugose coral fossils were found in Floyd County, Indiana in the St. Louis Limestone. This limestone dates back to the Middle Mississippian (Carboniferous) period. The corals appear to be Acrocyathus floriformis? also referred to as Lithostronchia or Lithostrotion or Lithostrotionella. These coral fossils also are found in Kentucky, Missouri, West Virginia, and maybe Alabama. Thanks to Alan for help with identification.
See a Lithostronchia specimen on the KYANA Geological Society web site: CLICK HERE
UPDATE (2019-06-15): website link below has changed to this: http://www.uky.edu/KGS/fossils/fossil-coral-rugose-corals-mound-shape.php
Learn more at the Kentucky Geological Survey web site: http://www.uky.edu/KGS/fossils/rugosecolonial3.htm
See other Lithostrotion corals on Plates XXXVI and XXXVII: CLICK HERE
11 comments:
I live in Hohenwald Tennessee and I have all kinds of this on my property, when I was growing up, I thought it was normal to have this everywhere
I have just recently found one of these in Minnesota!! Can someone please tell me more about them?
I have just found one of these on my farm in Minnesota! I am in a glacial deposit area and am starting to find cool things!
I have one found in Tennessee. Thanks for helping identify!
I found something similar but mine actually has creatures locked inside this mess that I found I need help determining what it is who do I go to
I found one in North Alabama.
I found one in chesaning mi, in the Misteguay creek in 1980. Its about 8 inches in diameter
I found a 40 + lb coral in TN It feels really solid, which I'm guessing is not a good thing? Should I attempt to cut into it?
I found a 40+ lb. Piece of reddish coral fossil in middle TN. It feels really solid , which I hard was not a good thing? Should I attempt to cut into it, with a masonry saw?
Coral fossils can be quite large, solid and heavy. Whether to cut it is a personal choice. If you want to polish it and see the growth lines or the polygon shapes then cutting would be the way to go. If you want to use an ornamental fossil then probably not.
I just found one in iowa close to Minnesota border
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