darrenrx Posted November 25, 2015 Share Posted November 25, 2015 Hi Fossil Forum, I need help in identifying a fossil my friend found in middle Georgia. The area where he found it has been reported to have fossils from the Ordovician Period. It was broken out of a hard limestone sedimentary rock that was embedded with shells. The fossil has bristles that form a cone shape. Any idea what this fossil is? Thanks, Darren Link to comment Share on other sites More sharing options...
darrenrx Posted November 25, 2015 Author Share Posted November 25, 2015 It's about the size of a dime. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted November 25, 2015 Share Posted November 25, 2015 This looks like a mold of the top opening of a horn coral. My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
TqB Posted November 25, 2015 Share Posted November 25, 2015 Looks like the actual preserved horn coral, not a mould. 1 Tarquin Link to comment Share on other sites More sharing options...
Al Dente Posted November 25, 2015 Share Posted November 25, 2015 If these fossils were found in the middle of Georgia they probably aren't Ordovician. This fossil looks a lot like fossil corals I find in the Eocene of North Carolina. I think they are Flabellum. There is a lot of Eocene in Georgia. Your domed shaped fossil in another thread also looks like a domed Eocene bryozoan. 1 Link to comment Share on other sites More sharing options...
FossilDAWG Posted November 25, 2015 Share Posted November 25, 2015 I have seen online blog postings that say the rocks around Warner Robbins (Middle Georgia) are Ordovician. This is a blatant error, the bedrock in that area is Eocene, as Al Dente said. The fossil is a mold of a solitary scleractinian coral, likely a Flabellum (again, Al Dente noted this first), which are not uncommon in the Ocala Limestone in that area. Don Link to comment Share on other sites More sharing options...
MikeR Posted November 25, 2015 Share Posted November 25, 2015 Don is most definitely correct. Ordovician does outcrop in Georgia but in the Northwestern part of the state in the ridge and valley region of the Appalachians. Yes you are picturing Upper Eocene internal casts from more than likely Tivola Limestone or perhaps one of the limestone layers within the Twiggs Clay. In your other posts you have an internal cast of the scaphopod Dentalium and what I have identified from my collecting efforts in Houston County, but not completely sure if I am correct, as the internal cast of a Lunulites type of Bryozoa colony. Mike "A problem solved is a problem caused"--Karl Pilkington "I was dead for millions of years before I was born and it never inconvenienced me a bit." -- Mark Twain Link to comment Share on other sites More sharing options...
darrenrx Posted December 7, 2015 Author Share Posted December 7, 2015 (edited) Wow Mike, you nailed the area exactly. My friend went back to the site in Houston County and brought back more examples. He thinks it is Tivola limestone from the Eocene period. Here are a few better fossil examples. Edited December 7, 2015 by darrenrx Link to comment Share on other sites More sharing options...
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