LKett Posted July 5 Share Posted July 5 I do not believe this to be a chert nodule. There appears to be unmistakable scutes. Found in Cedar Co. Missouri along with many other fossilized species. The plastron is pushed upward into the carapace. Pictures: Top, side, bottom. Link to comment Share on other sites More sharing options...
Rockwood Posted July 5 Share Posted July 5 Scutes and carapace? Forgive me, but what are you proposing this to be? Link to comment Share on other sites More sharing options...
Carl Posted July 5 Share Posted July 5 Sorry: not seeing a fossil here. I think you are seeing a turtle, which I can with near certainty say it is not. 1 Link to comment Share on other sites More sharing options...
Fin Lover Posted July 5 Share Posted July 5 Sorry, I don't see any evidence of turtle either. Fin Lover Link to comment Share on other sites More sharing options...
LKett Posted July 5 Author Share Posted July 5 30 minutes ago, Rockwood said: Scutes and carapace? Forgive me, but what are you proposing this to be? We'll see. Link to comment Share on other sites More sharing options...
hadrosauridae Posted July 5 Share Posted July 5 still chert. 1 Professional fossil preparation services at Red Dirt Fossils, LLC. https://reddirtfossils.com/ Link to comment Share on other sites More sharing options...
LKett Posted July 5 Author Share Posted July 5 Just now, hadrosauridae said: still chert. I am new to this world Please explain how matrix can be present inside of a formed chert nodule? Link to comment Share on other sites More sharing options...
Fin Lover Posted July 5 Share Posted July 5 What matrix are you referring to on the inside? Or was that comment meant for the other thread? Fin Lover Link to comment Share on other sites More sharing options...
LKett Posted July 5 Author Share Posted July 5 11 minutes ago, Fin Lover said: What matrix are you referring to on the inside? Or was that comment meant for the other thread? Sorry, someone told me the rough side was adhering matrix. Link to comment Share on other sites More sharing options...
LKett Posted July 5 Author Share Posted July 5 29 minutes ago, Fin Lover said: What matrix are you referring to on the inside? Or was that comment meant for the other thread? Another thread 1 Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted July 5 Share Posted July 5 It lacks the bilateral symmetry one would expect to see in a turtle shell. Also the "scutes" show no evidence of annular growth and the texture is wrong. It also lacks any openings for the head, legs and tail. Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 5 Share Posted July 5 Definitely a chert nodule. Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 IPFOTM -- MAY - 2024 _________________________________________________________________________________ "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...
Mahnmut Posted July 5 Share Posted July 5 5 hours ago, LKett said: I am new to this world Please explain how matrix can be present inside of a formed chert nodule? Hi, although I do see the similarity to a turtle, I agree the detail does not fit it being a turtle. To try and answer your question, flint nodules consist of silica that "gathered" or clumped inside a porous "matrix" like chalk. the clumping is often triggered by some irregularity that changes either the pH or the structure of that matrix to facilitate the deposition of silica. Often that starter is a fossil, but often its not, or it gets destroyed more or less in the process. It can happen, and is not especially rare that the silica gets deposited surrounding something without completely filling that space, creating shell-like structures filled by softer material. Very common with ironstone concretions also, those are called fairy cups I think and turn up regularly as pseudofossils. Best regards, J 1 Try to learn something about everything and everything about something Thomas Henry Huxley Link to comment Share on other sites More sharing options...
rocket Posted July 5 Share Posted July 5 Chert nodule. Sometimes they look like a fossil, depends on the inner or outer structure. Lot of them look like an animal, a figure or other things. We think we see an animal or a figure in it, but it isnt. This is called Pareidolia - Wikipedia we all know this and I am sure, every member of TFF has seen something in a stone what is "only a structure" Link to comment Share on other sites More sharing options...
LKett Posted July 6 Author Share Posted July 6 1 hour ago, rocket said: Chert nodule. Sometimes they look like a fossil, depends on the inner or outer structure. Lot of them look like an animal, a figure or other things. We think we see an animal or a figure in it, but it isnt. This is called Pareidolia - Wikipedia we all know this and I am sure, every member of TFF has seen something in a stone what is "only a structure" Not a mushroom. I get it. I have seen, broken and thrown hundreds and hundreds of chert nodules over my lifetime from this area, and this is not like any of them. I have seen hundreds and hundreds of animal joint bones, and it looks like a joint bone. Also, no fizzing with acid anywhere on the piece indicating limestone chert nodule. Just observations by a country man. Thank you for responding. Speaking of chert nodule, this is a cool one I found with little critters inside and out. I ground the end flat. Link to comment Share on other sites More sharing options...
Kane Posted July 6 Share Posted July 6 Looks to be some corals and bryozoans. Seems to be a high spired gastropod in one of those photos. I would say it would be safe to assume these are marine. 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
rocket Posted July 6 Share Posted July 6 @LKett: The "Mushroom" is incredible. I love stones like this and some of them are part of our small privat collection Let me look for our bird in Agate , if I have a pic Link to comment Share on other sites More sharing options...
Rockwood Posted July 6 Share Posted July 6 Foraminifera Link to comment Share on other sites More sharing options...
rocket Posted July 6 Share Posted July 6 Our "Bird" 1 Link to comment Share on other sites More sharing options...
Rockwood Posted July 6 Share Posted July 6 12 hours ago, LKett said: Thank you for responding. Speaking of chert nodule, this is a cool one I found with little critters inside and out. I ground the end flat. Little critters inside. Forams 1 Link to comment Share on other sites More sharing options...
Mahnmut Posted July 6 Share Posted July 6 12 hours ago, LKett said: I have seen hundreds and hundreds of animal joint bones, and it looks like a joint bone. Also, no fizzing with acid anywhere on the piece indicating limestone chert nodule Chert is not calcitic, so would not fizz with acid. Adhering limestone would. And talking about joint bones (I think you refer to your other thread here?) Chert nodules as well as weathered limestone often look very bonelike. But I do not recognize any specific bone here (femur, humerus, you name it) and I have also seen my share. I could say I have seen hundreds of bunnies, and can therefore confidently tell that cloud up there looks very bunnylike. Still it is a cloud. Also I would find it endearing if you could acknowledge it when your qestions are answered instead of just pulling the next whatabout from the hat. Nice fossils in that second to last one, and the mushroom could, maybe, be a fossil sponge. Best regards, J 1 Try to learn something about everything and everything about something Thomas Henry Huxley Link to comment Share on other sites More sharing options...
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