Italo40 Posted December 2, 2020 Share Posted December 2, 2020 Dear Members, three years ago I found a small fossil in the Ames Limestone Formation (Pennsylvanian in age) exposed in Frick Park, Pittsburgh, PA. The Ames Limestone preserves a rich assemblage of marine invertebrate fossils (crinoids, corals, etc.). On the other hand vertebrates are much more rare (as far as I know). Originally only the tip was exposed, then I had a fossil preparator work on it, so that the whole specimen is now visible. Close up of the tip at 20X It is definetely fragmentary, but I don't know what it is. I would exclude a fish/shark tooth, because it is too flattened. I think it might be a fish scale, but I really don't know. Do you have any idea? Thank you, Fabio 4 1 Follow me on Instagram (@italian_fossilhunter). Link to comment Share on other sites More sharing options...
Fossildude19 Posted December 2, 2020 Share Posted December 2, 2020 @jdp @connorp @Petalodus12 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...
Shellseeker Posted December 2, 2020 Share Posted December 2, 2020 Interesting !!! What is the size ? I will be curious and waiting for an ID Alligator Gars supposedly go back 100 mya, but nothing close to Pennsylvanian . 1 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Italo40 Posted December 2, 2020 Author Share Posted December 2, 2020 14 minutes ago, Shellseeker said: Interesting !!! What is the size ? I will be curious and waiting for an ID Alligator Gars supposedly go back 100 mya, but nothing close to Pennsylvanian . Indeed I forgot to mention the size. The specimen is circa 2,5 cm (1 in) long. Follow me on Instagram (@italian_fossilhunter). Link to comment Share on other sites More sharing options...
Petalodus12 Posted December 2, 2020 Share Posted December 2, 2020 Hm, I’m not an expert but I’d say that it looks to be more along the lines of shark tooth material (possibly root fragment?). I know Petalodus teeth can be found in this layer and their roots have a similar structure. Usually the scales I find in the area have a distinct covering of ganoine (which is shiny) and this lacks that. So my guess would be shark tooth root material, although I could be wrong. 1 Link to comment Share on other sites More sharing options...
Shellseeker Posted December 2, 2020 Share Posted December 2, 2020 34 minutes ago, Petalodus12 said: Hm, I’m not an expert but I’d say that it looks to be more along the lines of shark tooth material (possibly root fragment?). I know Petalodus teeth can be found in this layer and their roots have a similar structure. Usually the scales I find in the area have a distinct covering of ganoine (which is shiny) and this lacks that. So my guess would be shark tooth root material, although I could be wrong. That looks possible: http://www.fossilmall.com/Pangaea/pfish/pfish13/pfish13.htm The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
jdp Posted December 2, 2020 Share Posted December 2, 2020 Thinking this is a megalichthyid but could be wrong. 1 Link to comment Share on other sites More sharing options...
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