Joseph Fossil Posted December 2, 2022 Share Posted December 2, 2022 During my trip to a Bond Formation Rock formation in Oglesby, Illinois on October 8th, 2022, one of the limestone blocks I found had a small reddish fossil sticking out on the side of the rock. It was about 2mm in length so pretty small. I thought it was interesting so I brought it back with the rest of the fossils collected that day. There was not a lot of room in my garage for the block so I put it outside on a supply bin for a while. The next couple of days, It rained ALOT. One day I remembered that the calcite in limestone dissolves in rain, so I went out that night to check on what could be revealed. I was pleasantly surprised at what I found! The rain had exposed more of the fossil to the surface. I believe it's a Chondrichthyan tooth or a piece of a brachiopod, but I'm not 100% sure so I was wondering anyone could give a proper ID for the specimen? Link to comment Share on other sites More sharing options...
Joseph Fossil Posted December 2, 2022 Author Share Posted December 2, 2022 Here are some better close ups of the specimens (sorry for the blurry photos, I'm going to fix my camera soon)!!! Link to comment Share on other sites More sharing options...
Fossildude19 Posted December 2, 2022 Share Posted December 2, 2022 Granted, the pictures are pretty blurry, but I am not seeing any texture to points this out as a chondrichthyan tooth to me. 1 2 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...
Tidgy's Dad Posted December 3, 2022 Share Posted December 3, 2022 Looks more like a little rugose coral. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Joseph Fossil Posted December 3, 2022 Author Share Posted December 3, 2022 @Fossildude19 @Tidgy's Dad Thanks for the ID! It does look little like coral and I've never seen chondrichyan teeth from that formation that reddish color! I think a coral ID is correct! I'm going to repair my camera soon and get this thing under a dissecting scope and microscope. 1 Link to comment Share on other sites More sharing options...
Joseph Fossil Posted December 8, 2022 Author Share Posted December 8, 2022 Here are better photos of the specimen under a dissecting scope (I was able to get it off the limestone block in a few pieces but it's still pretty intact)!!! Link to comment Share on other sites More sharing options...
Fossildude19 Posted December 8, 2022 Share Posted December 8, 2022 Pictures of the bottom edge might be helpful. 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...
deutscheben Posted December 10, 2022 Share Posted December 10, 2022 This one does look potentially like a partial tooth to me- as @Fossildude19 said, clearer images of the edge could confirm if it has the typical internal structure for teeth. Link to comment Share on other sites More sharing options...
Joseph Fossil Posted December 12, 2022 Author Share Posted December 12, 2022 @Fossildude19 @deutscheben Good point! Here are some clearer photos!! (1) (2) (3) (4) (5) (6) (7) Link to comment Share on other sites More sharing options...
Fossildude19 Posted December 12, 2022 Share Posted December 12, 2022 This looks more like a fish scale to me. @jdp 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...
deutscheben Posted December 12, 2022 Share Posted December 12, 2022 That is definitely vertebrate material, but what part I am not certain. 1 Link to comment Share on other sites More sharing options...
jdp Posted December 13, 2022 Share Posted December 13, 2022 Definitely vertebrate. Might be the base of a chondrichthyan tooth or denticle, though part of me is thinking this might be lungfish. Is this a marine or freshwater horizon? Do you know? 1 Link to comment Share on other sites More sharing options...
Joseph Fossil Posted December 13, 2022 Author Share Posted December 13, 2022 16 hours ago, jdp said: Definitely vertebrate. Might be the base of a chondrichthyan tooth or denticle, though part of me is thinking this might be lungfish. Is this a marine or freshwater horizon? Do you know? @jdp It's from Bond Formation marine deposits. Link to comment Share on other sites More sharing options...
Joseph Fossil Posted December 13, 2022 Author Share Posted December 13, 2022 On 12/12/2022 at 1:16 PM, Fossildude19 said: This looks more like a fish scale to me. @jdp @Fossildude19 @deutscheben @jdp To me, it kinda looks like a Deltodus tooth. Besides Chondrichthyans, what other fish species are present in the Bond Formation (Pennsylvanian, Carboniferous) of Oglesby, Illinois? Link to comment Share on other sites More sharing options...
Fossildude19 Posted December 13, 2022 Share Posted December 13, 2022 Sorry. Not familiar with that area. 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...
RCFossils Posted December 13, 2022 Share Posted December 13, 2022 Megalichthys scales are fairly abundant in the Bond. My guess is that it might be a portion of a meg scale. 1 Link to comment Share on other sites More sharing options...
jdp Posted December 14, 2022 Share Posted December 14, 2022 Texture is wrong for megalichthyid. In a megalichthyid, it would be enameloid. 1 Link to comment Share on other sites More sharing options...
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