Recker Posted December 13, 2018 Author Share Posted December 13, 2018 Here is a map showing the Brookville Reservoir and the location of where I found the "fossil" on the Whitewater River. 2 Link to comment Share on other sites More sharing options...
Recker Posted December 13, 2018 Author Share Posted December 13, 2018 I tried the vinegar test, no fizzes on the outside at all, although when I filled the opening up it did a little but was reacting to the fine sandy sediment that was inside of the fossil. I hope this helps, I'm obsessed LOL Linda Link to comment Share on other sites More sharing options...
abyssunder Posted December 13, 2018 Share Posted December 13, 2018 If it is a silicified / geodized fossil (e.g. coral), that would explain why it doesn't react to vinegar. 1 " 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...
Recker Posted December 14, 2018 Author Share Posted December 14, 2018 On 12/13/2018 at 7:34 AM, Al Tahan said: Those lines running down do seem to have some connection to the photos there!! Maybe it’s just a large weathered cephalopod On 12/13/2018 at 7:22 AM, minnbuckeye said: I hunt the Ordovician, so when something this large presents itself, I think "could it be a cephalopod". Some cephalopods locally will be hollow, some with quartz deposits. this exhibits both. The picture that interests me the most was the one quoted above. There are longitudinal ridges similar to the cephalopod Kionoceratids. Just a thought. It still doesn't explain the outer layer. I've been doing some more research and I am really leaning towards Cephalopod. Figures O and L are exactly what this looks like. Used the vinegar test, nothing on the outside, fizz on the inside, at first I thought the vinegar was reacting to the fine silt in the opening but I've rinsed it until the water runs clean and tried again, still fizzes. Got some really small flakes of thin white material out of it. Looked up info in my book, "A Sea Without Fish, Life in the Ordovician Sea of the Cincinnati Region", by David L. Meyer and Richard Arnold Davis. What really stuck out was this off of page 137 of chapter 9 Molluscs. "The material of the outer wall of each shell was preserved only when encrusted by bryozoans, but the septa and siphuncular structures of the shell interiors were replaced by calcite (the fizz I'm getting with vinegar even thought it's rinsed clean). Body chambers and phragmocones were infilled with claystone, but, in some cases, the ccamerae remained empty or were infilled with calcite crystals. Removal of encrusting bryozoans revealed the remarkable preservation of remnants of color patterns on the exterior of the shell." Not sure, trying to learn but I wonder what is under the bryozoan encrustation, and how do I remove it safely? Curious as all hell, and eager to learn more. Appreciate everyone's replies to get me digging and finding more info. 1 Link to comment Share on other sites More sharing options...
minnbuckeye Posted December 14, 2018 Share Posted December 14, 2018 @Recker, the bad news is that I am usually wrong when I open my mouth, so keep an open mind!!!! 1 Link to comment Share on other sites More sharing options...
Recker Posted December 15, 2018 Author Share Posted December 15, 2018 26 minutes ago, minnbuckeye said: @Recker, the bad news is that I am usually wrong when I open my mouth, so keep an open mind!!!! LOL!!! I am just trying to figure this thing out. I appreciate everyone on this forum...learning alot from all you! 1 Link to comment Share on other sites More sharing options...
Rockwood Posted December 15, 2018 Share Posted December 15, 2018 9 hours ago, minnbuckeye said: the bad news is that I am usually wrong when I open my mouth but don't you hate it when you were right on and weren't quite sure enough to say anything ? 2 Link to comment Share on other sites More sharing options...
minnbuckeye Posted December 15, 2018 Share Posted December 15, 2018 @Rockwood, yes, I have had plenty of those moments!!! Thanks for reminding me. 3 Link to comment Share on other sites More sharing options...
MRfossilMISTER Posted December 16, 2018 Share Posted December 16, 2018 could it be a coprolite of some sort? im not exprienced (not like i will be able to, fossiless lousiana) games are fun, but finding fossil is even better! Link to comment Share on other sites More sharing options...
Johannes Posted December 16, 2018 Share Posted December 16, 2018 Hi @ all, not very attractive, but very interesting fossil! First part is relativly easy, the inner part is "mummyfied" by bryozoa, like @Rockwood shows in his post from thursday, 03:29pm. The inner one is tricky. from its lithology and shape I think it is neither a coprolit nor a phosphorite. the shape reminds me first on some similar ceph-shells, but in my opinion it is to unregular, and under bryozoan "mummyfication"/immuration usually surface details of the inner fossil are well preserved, and we can not see something fo this on the pictures. I'm absolutely not sure, and not finally excluding the ceph-idea, I can follow @Fossildude19 first opinion of an immurated sponge. 1 Link to comment Share on other sites More sharing options...
minnbuckeye Posted December 16, 2018 Share Posted December 16, 2018 8 hours ago, MRfossilMISTER said: could it be a coprolite Not likely in the Ordovician sea. 1 Link to comment Share on other sites More sharing options...
Herb Posted December 17, 2018 Share Posted December 17, 2018 The Brookville reservoir is U. Ordovician in age "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
Herb Posted December 17, 2018 Share Posted December 17, 2018 On 12/13/2018 at 7:03 AM, Rockwood said: Not sure if it's what you intended to indicate, but just to be clear, fossils do sometimes have quartz veins running through them. yes as in the stromatolite I pictured above. "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
Herb Posted December 17, 2018 Share Posted December 17, 2018 looks like a cephalopod encrusted with bryozoa. You can see the pores of the bryozoa in one photo. Bryozoa encrusted cephalopods are very common in the U. Ordovician in that area. "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
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