gigantoraptor Posted February 5, 2020 Share Posted February 5, 2020 Hello all Today this fish came in my mailbox together with a specimen of Rhacolepis buccalis. This fish does not seem to be of the same species, but the skull, fins and tail are in bad shape or even absent. Most of the 'skin' is gone, uncovering some of the bones beneath. I know this will make it hard to ID, but maybe one of the fish experts can help me out. It's from the Cretaceous Santana formation of Brazil and it's about 21 cm long. Thanks in advance. 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted February 5, 2020 Share Posted February 5, 2020 With the shape of the tail, and the overall length, I think this could be a Rhacolepis buccalis. 6 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...
gigantoraptor Posted February 6, 2020 Author Share Posted February 6, 2020 12 hours ago, Fossildude19 said: With the shape of the tail, and the overall length, I think this could be a Rhacolepis buccalis. Thank you. Can it also be Tharrias araripes? I don't see any of the typical shales of Rhacolepis buccalis. Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted February 6, 2020 Share Posted February 6, 2020 12 hours ago, gigantoraptor said: Thank you. Can it also be Tharrias araripes? I don't see any of the typical shales of Rhacolepis buccalis. I don't think it is Tharrias araripes. The location of the dorsal fin is wrong. More like that of Rhacolepis buccalis. 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...
gigantoraptor Posted February 6, 2020 Author Share Posted February 6, 2020 14 minutes ago, Mark Kmiecik said: I don't think it is Tharrias araripes. The location of the dorsal fin is wrong. More like that of Rhacolepis buccalis. Where do you see a dorsal fin? I see some scratches from the preparation on top but I don't see any preserved fins. Link to comment Share on other sites More sharing options...
Fossildude19 Posted February 6, 2020 Share Posted February 6, 2020 13 hours ago, gigantoraptor said: Thank you. Can it also be Tharrias araripes? I don't see any of the typical shales of Rhacolepis buccalis. I wouldn't think it could be Tharrias araripes. Tharrias is not often preserved in the nodules with so much relief. They tend to be more compressed than the Rhacolepis. I am quite confident this is a Rhacolepis with the scales removed. I think the nodule did not break cleanly, and this is the result. Unfortunately, this fossil is not much to look at. 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...
Mark Kmiecik Posted February 6, 2020 Share Posted February 6, 2020 15 minutes ago, gigantoraptor said: Where do you see a dorsal fin? I see some scratches from the preparation on top but I don't see any preserved fins. I took a closer look -- it may indeed be scratches from prep. My bad, should have magnified it before. 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...
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