jdp Posted January 21, 2021 Share Posted January 21, 2021 13 hours ago, connorp said: Here's a cool little denticle. It feels familiar, maybe acanthodian? I will have to go back through my literature when I have time. And then this super small thing. It superficially resembles a vertebra (to me at least), but I don't know. Denticle is chondrichthyan, vaguely "Petrodus" type, but I couldn't tell you the animal's actual genus. Vertebra is probably haplolepid. 2 Link to comment Share on other sites More sharing options...
jdp Posted January 21, 2021 Share Posted January 21, 2021 Quote I find small pieces of cancellous bone often. Never anything more than little unidentifiable bits though, and very fragile. Object on the right looks like a heavily etched holocephalan toothplate. Maybe something like Ageleodus or Sibyrhynchus. Object on the left is hard to tell; the surface of the bone looks vaguely sarcopterygian...I wonder if this might even be a fragment of dermal bone. Quote A tiny scale, I'm guessing palaeoniscoid based on the rhomboidal shape. Safe bet. 1 Link to comment Share on other sites More sharing options...
deutscheben Posted January 23, 2021 Share Posted January 23, 2021 Nice micro fish bits! As I am going through my black shale I find myself wishing for a “Guide to disarticulated fish parts of the Pennsylvanian”, I find so many interesting things and have very little idea what they are. 2 Link to comment Share on other sites More sharing options...
connorp Posted March 12, 2021 Author Share Posted March 12, 2021 Kicking off the season with my best and most complete petalodont tooth yet. I'm labeling it as Peripristis for now but am open to other thoughts. 4 Link to comment Share on other sites More sharing options...
connorp Posted April 22, 2021 Author Share Posted April 22, 2021 I had a really good hunt in the LaSalle Limestone last weekend. I still have a couple larger finds I'm finishing prep on, but I found a lot of smaller specimens that required little to no prep. All the specimens below are <1cm at the longest dimension. Haven't started trying to ID them, that will be a job for the winter unless anyone has any input. A partial petalodont crown A partial fish scale. I would guess palaeoniscoid. Cladodont tooth This is a neat one. It looks similar to a specimen @deutscheben posted a while ago, which was ID'd as a possibly undescribed hybodontiform. 3 1 Link to comment Share on other sites More sharing options...
connorp Posted May 3, 2021 Author Share Posted May 3, 2021 Here are two new holocephalan tooth plates I'm quite happy with. I love the coloring on them. Cochliodus? sp. (not positive on the ID for this one, as usual) Deltodus sp. 5 Link to comment Share on other sites More sharing options...
bigred97 Posted May 3, 2021 Share Posted May 3, 2021 Beautiful! Really nice pictures, I love the detail on them. 1 Link to comment Share on other sites More sharing options...
fossilsonwheels Posted May 3, 2021 Share Posted May 3, 2021 On 4/21/2021 at 10:08 PM, connorp said: I had a really good hunt in the LaSalle Limestone last weekend. I still have a couple larger finds I'm finishing prep on, but I found a lot of smaller specimens that required little to no prep. All the specimens below are <1cm at the longest dimension. Haven't started trying to ID them, that will be a job for the winter unless anyone has any input. A partial petalodont crown A partial fish scale. I would guess palaeoniscoid. Cladodont tooth This is a neat one. It looks similar to a specimen @deutscheben posted a while ago, which was ID'd as a possibly undescribed hybodontiform. Fantastic finds Connor. The Cladodont and that Hybodontiform are really great. 1 Link to comment Share on other sites More sharing options...
connorp Posted May 4, 2021 Author Share Posted May 4, 2021 Posting my Peripristis here for posterity. This was the last find to clean up from my trips so far this year. A perfect little cladodont tooth, and I think my best so far. Barely measures 5mm. 1 5 Link to comment Share on other sites More sharing options...
deutscheben Posted May 5, 2021 Share Posted May 5, 2021 You’ve found a really great batch this year, that Peripristis is next level! Congrats on some awesome finds. 1 1 Link to comment Share on other sites More sharing options...
connorp Posted May 5, 2021 Author Share Posted May 5, 2021 17 minutes ago, deutscheben said: You’ve found a really great batch this year, that Peripristis is next level! Congrats on some awesome finds. Thanks! The rocks that came down this winter have been very productive. Link to comment Share on other sites More sharing options...
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