Antonjo Posted September 29, 2020 Share Posted September 29, 2020 Found on sep. 26. 2020 in Split Croatia, on marl site, and I don't have idea what it could be? Appreciate your suggestions, Thanks 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted September 29, 2020 Share Posted September 29, 2020 Can't help with the ID. Looks kind of like bone, but I'm not sure. Potentially helpful LINK 1 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...
mr.cheese Posted September 29, 2020 Share Posted September 29, 2020 The shape and line reminds me of a scapula maybe? No idea of anything other than that though! Follow Fossildudes link and see if that helps? Link to comment Share on other sites More sharing options...
diginupbones Posted September 29, 2020 Share Posted September 29, 2020 Looks like turtle shell Link to comment Share on other sites More sharing options...
Antonjo Posted September 29, 2020 Author Share Posted September 29, 2020 Thanks, It all came on my mind too, this zig-zag pattern on the upper side is especially interesting, if you pay attention Link to comment Share on other sites More sharing options...
Rockwood Posted September 29, 2020 Share Posted September 29, 2020 2 hours ago, diginupbones said: Looks like turtle shell It seem much finer textured than the image I think of as turtle. Is there a simple explanation ? Link to comment Share on other sites More sharing options...
diginupbones Posted September 29, 2020 Share Posted September 29, 2020 3 hours ago, Rockwood said: It seem much finer textured than the image I think of as turtle. Is there a simple explanation ? @turtlesteve Link to comment Share on other sites More sharing options...
LabRatKing Posted September 29, 2020 Share Posted September 29, 2020 Without touching it, my knee-jerk reaction is flowstone....but... the "zig-zags" are like nothing I have seen in fossils...hence that reaction. After playing around with MINDAT of the area, I see a lot of Triassic brachiopods reported, but not much on vertebrates from that area. In this case a "fizz test" would be my next step. Id fizz a small part of the specimen and visually compare the reaction(if any) to a sample of the substrates. 1 Link to comment Share on other sites More sharing options...
Antonjo Posted September 29, 2020 Author Share Posted September 29, 2020 This is in situ image, I can take few more detailed photos 1 Link to comment Share on other sites More sharing options...
Rockwood Posted September 29, 2020 Share Posted September 29, 2020 I think this is a step in the direction of a scapula. The situ it was in, loose rocky soil, or known fossiliferous formation ? Link to comment Share on other sites More sharing options...
LabRatKing Posted September 29, 2020 Share Posted September 29, 2020 hmmmm...I'm stumped, however, I do see what appears to be some crinoids in the in situ photo....this might help others narrow it down. Link to comment Share on other sites More sharing options...
turtlesteve Posted September 29, 2020 Share Posted September 29, 2020 2 hours ago, diginupbones said: @turtlesteve Sorry not of any help on this one, I’m not sure what this is. There is a superficial similarity to a turtle pleural (rib) but I’m doubtful - the sharp edge on the bottom doesn’t look right. 1 Link to comment Share on other sites More sharing options...
Antonjo Posted September 30, 2020 Author Share Posted September 30, 2020 7 hours ago, Rockwood said: I think this is a step in the direction of a scapula. The situ it was in, loose rocky soil, or known fossiliferous formation ? There are some numulite rocks there, but they are fairly common in this area Here are two other photos from location. I'm curious about this "spongy"rock? Link to comment Share on other sites More sharing options...
Rockwood Posted September 30, 2020 Share Posted September 30, 2020 2 hours ago, Antonjo said: There are some numulite rocks there, but they are fairly common in this area Here are two other photos from location. I'm curious about this "spongy"rock? My question was more related to how certain you are that the first post is the age of the rock and not the weevil ? 1 Link to comment Share on other sites More sharing options...
Antonjo Posted September 30, 2020 Author Share Posted September 30, 2020 21 minutes ago, Rockwood said: My question was more related to how certain you are that the first post is the age of the rock and not the weevil ? As I know, this area is from eocene period. Weevil is random guest Link to comment Share on other sites More sharing options...
Rockwood Posted September 30, 2020 Share Posted September 30, 2020 34 minutes ago, Antonjo said: As I know You are saying that it was recovered from within the layer and photographed on the surface, ruling out the possibility that it is a modern bone ? Link to comment Share on other sites More sharing options...
Antonjo Posted September 30, 2020 Author Share Posted September 30, 2020 2 minutes ago, Rockwood said: You are saying that it was recovered from within the layer and photographed on the surface, ruling out the possibility that it is a modern bone ? No, I'm not ruling it out, it is find on surface as is Link to comment Share on other sites More sharing options...
Rockwood Posted September 30, 2020 Share Posted September 30, 2020 21 minutes ago, Antonjo said: No, I'm not ruling it out, it is find on surface as is I suspect it may be modern bone, but without knowing the formation it's hard for me to say for sure. How heavy is it ? There are some tests you can try if there is any doubt whether it is a fossil or not. Link to comment Share on other sites More sharing options...
Antonjo Posted September 30, 2020 Author Share Posted September 30, 2020 1 hour ago, Rockwood said: I suspect it may be modern bone, but without knowing the formation it's hard for me to say for sure. How heavy is it ? There are some tests you can try if there is any doubt whether it is a fossil or not. It seems to me it is heavier than regular old bone, and it looks petrified What are the tests? Link to comment Share on other sites More sharing options...
Rockwood Posted September 30, 2020 Share Posted September 30, 2020 57 minutes ago, Antonjo said: What are the tests? A tap test will help determine whether it is mineralized. Tap it lightly with something like a spoon. Mineralized bone will make a sound similar to what table china would make, high pitched. Modern bone will have a lower pitch, more like wood. To test for remnant organics, hold it in the flame of a lighter and smell for something similar to burning hair. If the bone has been cooked the result of both tests can be compromised however. Link to comment Share on other sites More sharing options...
pachy-pleuro-whatnot-odon Posted September 30, 2020 Share Posted September 30, 2020 Tricky pieces these. I do believe this is fossil bone, though, but am not sure they'd be fossilised. And, while it's certainly true these are flat bones, I'm not convinced they are scapulae. Much rather, I'm thinking of bird sternum. You know the keel on a chicken breast bone? All birds have this due to their need for attachment of their flight muscles, and this, in fact, a trait inherited from their theropod ancestors. However, the zigzag pattern on the reverse of the biggest piece seems odd for a sternum. Then again, this may be just plant root etchings, or some other outcome of taphonomic processes. An alternative explanation, IMO, is that these would be scutes of some kind of animal. Funnily enough, I found an undefined flat piece of something or another from a French Eocene deposit some time ago - smooth on one side, but with a ridge, as well as a bubbly texture, on the other side. Attached is a photograph (the ridge runs right to left across the middle of the scute, which measures just a couple of millimetres across). I still haven't figured out what that might be, but it just goes to show that there are a lot of different things that can be flat but have ridges running the obverse. 'There's nothing like millions of years of really frustrating trial and error to give a species moral fibre and, in some cases, backbone' -- Terry Pratchett Link to comment Share on other sites More sharing options...
Antonjo Posted September 30, 2020 Author Share Posted September 30, 2020 2 hours ago, Rockwood said: Mineralized bone will make a sound similar to what table china would make, high pitched. I knocked those two pieces one with another and they surely sound like two stones, high pitched I tried to burn it too, and it doesn't smell like hair or nails, but somehow different Here are few more photos, with washed and cleaner sample 1 Link to comment Share on other sites More sharing options...
Antonjo Posted September 30, 2020 Author Share Posted September 30, 2020 47 minutes ago, pachy-pleuro-whatnot-odon said: Funnily enough, I found an undefined flat piece of something or another from a French Eocene Could it be some coral? Link to comment Share on other sites More sharing options...
Rockwood Posted September 30, 2020 Share Posted September 30, 2020 Much better photos. I haven't a clue what it is now. Link to comment Share on other sites More sharing options...
pachy-pleuro-whatnot-odon Posted September 30, 2020 Share Posted September 30, 2020 20 minutes ago, Antonjo said: Could it be some coral? No, it's a lacustrine deposit in my case, and as flat and smooth as a scute on the underside. I believe it's a scute of some sort, just don't know whether fish, reptile or mammal... 'There's nothing like millions of years of really frustrating trial and error to give a species moral fibre and, in some cases, backbone' -- Terry Pratchett Link to comment Share on other sites More sharing options...
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