Roz Posted July 11, 2013 Share Posted July 11, 2013 The only thing I can think of is that they were some kind of reinforcing structures in the plates. Yes, something of a protective nature does make sense. Welcome to the forum! Link to comment Share on other sites More sharing options...
Missourian Posted July 14, 2013 Author Share Posted July 14, 2013 I examined another mandible of the same kind shown in the post at http://www.thefossilforum.com/index.php?/topic/25758-phosphatic-concretions-of-the-pennsylvanian-muncie-creek-shale/?p=411124 and http://www.thefossilforum.com/index.php?/topic/25758-phosphatic-concretions-of-the-pennsylvanian-muncie-creek-shale/?p=425472 : The teeth aren't as good, but much of the detail is exquisite: Context is critical. Link to comment Share on other sites More sharing options...
Missourian Posted July 14, 2013 Author Share Posted July 14, 2013 Much detail can be seen. Small teeth (?), spongy bone structure, and vessel canals (?), among other things: Some more spongy bone: The shiny encrustation here may be a 'snapshot' of the beginning of the phosphatization process: The delicate structures were preserved during the earliest stages of fossilization as minerals covered the surfaces before they were destroyed by decay and bioturbation. Context is critical. Link to comment Share on other sites More sharing options...
fossilized6s Posted October 22, 2014 Share Posted October 22, 2014 Wow Missourian awesome stuff here! You've found some great pieces. Have you found any more lately? Do you freeze/thaw these like i do with my Mazon nods? ~Charlie~ "There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK ->Get your Mosasaur print ->How to spot a fake Trilobite ->How to identify a CONCRETION from a DINOSAUR EGG Link to comment Share on other sites More sharing options...
Missourian Posted October 22, 2014 Author Share Posted October 22, 2014 On 10/22/2014 at 0:54 AM, fossilized6s said: Wow Missourian awesome stuff here! You've found some great pieces. Have you found any more lately? Do you freeze/thaw these like i do with my Mazon nods? Thanks. I find a few now and then. With competition with other collectors and deterioration of sites, the pickings aren't quite like they were. For me, it's pretty much pop with a hammer. The ones with good stuff usually split pretty readily. Context is critical. Link to comment Share on other sites More sharing options...
Petalodus12 Posted June 25, 2023 Share Posted June 25, 2023 On 6/28/2013 at 11:36 AM, Roz said: I love seeing those! Do you know what those are called? To the right of the xxxxx's? I may have solved some of my mystery bones because several look just like those.. IK this is a super old thread, but these are the paths of the lateral line canals. They run all over the skull and down the side of the fish, and allow it to sense pressure changes in the water column. 1 Link to comment Share on other sites More sharing options...
Jaybot Posted November 1, 2023 Share Posted November 1, 2023 I live in the KC area, and I didn't know Phosphatic nodules existed, let alone the idea that I could find these nodules in the shale layers. Finding info on fossil localities in the KC area is tough. Now I'll have to keep my eye out, and hope to find some of these nodules. -Jay ''...science is eminently perfectible, and that each theory has constantly to give way to a fresh one.'' -Journey to the Center of the Earth, Jules Verne Link to comment Share on other sites More sharing options...
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