Deborah S. Posted November 27, 2018 Share Posted November 27, 2018 At first I thought this might be half of a fossilized mollusk, but maybe it's crocodile scute, which is a common find at the Rowan University Fossil Park a few miles away. Maybe it's something I don't know about. Hopefully it's not just another rock I found it in a streambed of Cretaceous green marl. Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 27, 2018 Share Posted November 27, 2018 Unfortunately, I am not seeing a fossil here. An oddly shaped rock, I think. 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...
Wolf89 Posted November 27, 2018 Share Posted November 27, 2018 It looks like a worn oyster to me Link to comment Share on other sites More sharing options...
jpc Posted November 27, 2018 Share Posted November 27, 2018 Oyster shape but the texture is all wrong. I vote for funny rock. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted November 27, 2018 Share Posted November 27, 2018 It is suggestive of an oyster similar to Lopha or the like, but I also think this is just a rock that has a similar shape. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
SailingAlongToo Posted November 27, 2018 Share Posted November 27, 2018 +1 for geologic Don't know much about history Don't know much biology Don't know much about science books......... Sam Cooke - (What A) Wonderful World Link to comment Share on other sites More sharing options...
Deborah S. Posted November 27, 2018 Author Share Posted November 27, 2018 1 hour ago, Fossildude19 said: Unfortunately, I am not seeing a fossil here. An oddly shaped rock, I think. Thank you for taking the time to check it out and reply. I searched online and in books for over an hour to find a mollusk like it and couldn't. That's when I starting hoping it was some other kind of fossil. At least it's an interesting rock. I think it's sedimentary. Is the picture good enough for you to hazard a guess as to the type of rock? Link to comment Share on other sites More sharing options...
Deborah S. Posted November 27, 2018 Author Share Posted November 27, 2018 1 hour ago, Wolf89 said: It looks like a worn oyster to me That's what I thought Link to comment Share on other sites More sharing options...
Deborah S. Posted November 27, 2018 Author Share Posted November 27, 2018 1 hour ago, jpc said: Oyster shape but the texture is all wrong. I vote for funny rock. Thank you. At least it's an interesting rock. Do you have a moment to explain what is wrong with the texture? Link to comment Share on other sites More sharing options...
Deborah S. Posted November 27, 2018 Author Share Posted November 27, 2018 1 hour ago, Tidgy's Dad said: It is suggestive of an oyster similar to Lopha or the like, but I also think this is just a rock that has a similar shape. Everyone seems to agree. I was sure it was something. Thank you for your reply Do you have a moment to explain why it is more rocklike than fossil like? Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted November 27, 2018 Share Posted November 27, 2018 2 hours ago, Deborah S. said: Everyone seems to agree. I was sure it was something. Thank you for your reply Do you have a moment to explain why it is more rocklike than fossil like? Yeah, sure. Rocks have general patchiness, but could be of any shape when eroded. You may see shapes in it, or it may be eroded into suggestive shapes. Bur fossils usually have more of a distinct structure and shape to them. For example a real Lopha, wouldn't just be suggestively the shape, but show structure as well. This is a poor specimen but you can still see some of the morphology. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Deborah S. Posted November 27, 2018 Author Share Posted November 27, 2018 2 minutes ago, Tidgy's Dad said: Yeah, sure. Rocks have general patchiness, but could be of any shape when eroded. You may see shapes in it, or it may be eroded into suggestive shapes. Bur fossils usually have more of a distinct structure and shape to them. For example a real Lopha, wouldn't just be suggestively the shape, but show structure as well. This is a poor specimen but you can still see some of the morphology. Thank you very much! The pictures are helpful for showing the importance of structure. I'll keep posting my "fossils" and hopefully will get this right soon. Link to comment Share on other sites More sharing options...
jpc Posted November 28, 2018 Share Posted November 28, 2018 structure and texture. The oyster-like shape is evident, but look at the texture compared to the photo tidgy's dad posted. Yours seems smooth and polished, which is very common for chert and other rocks. If this had been a shell and it had gotten polished, it would show shell structure in the polished areas. I hope this helps. Link to comment Share on other sites More sharing options...
Deborah S. Posted November 28, 2018 Author Share Posted November 28, 2018 47 minutes ago, jpc said: structure and texture. The oyster-like shape is evident, but look at the texture compared to the photo tidgy's dad posted. Yours seems smooth and polished, which is very common for chert and other rocks. If this had been a shell and it had gotten polished, it would show shell structure in the polished areas. I hope this helps. Thank you for helping me refine my ability to recognize fossils! Link to comment Share on other sites More sharing options...
Plax Posted November 28, 2018 Share Posted November 28, 2018 It has the waxy sheen of chert. Once you're satisfied that it's not a fossil you can break it to see if it has any fossil inclusions. Be careful breaking chert of course as it is very glass like which is why native Americans in southern NJ used it to make bifacial tools etc. In fact this has a coarse resemblance to an artifact known as a shaft abrader. Not saying it is one of course as the fine structure doesn't support that conclusion. Always wear eye protection and make sure that any onlookers avert their attention while you do the breaking. Link to comment Share on other sites More sharing options...
Deborah S. Posted November 28, 2018 Author Share Posted November 28, 2018 1 hour ago, Plax said: It has the waxy sheen of chert. Once you're satisfied that it's not a fossil you can break it to see if it has any fossil inclusions. Be careful breaking chert of course as it is very glass like which is why native Americans in southern NJ used it to make bifacial tools etc. In fact this has a coarse resemblance to an artifact known as a shaft abrader. Not saying it is one of course as the fine structure doesn't support that conclusion. Always wear eye protection and make sure that any onlookers avert their attention while you do the breaking. Thank you. I can't bring myself to break it yet, but if I do, I'll keep your cautions in mind. Back when I was just into rocks and didn't know about all the fossils around, I would have thought a unusual piece of chert was interesting Link to comment Share on other sites More sharing options...
Deborah S. Posted November 28, 2018 Author Share Posted November 28, 2018 1 hour ago, Plax said: Be careful breaking chert of course as it is very glass like which is why native Americans in southern NJ used it to make bifacial tools etc. In fact this has a coarse resemblance to an artifact known as a shaft abrader. Not saying it is one of course as the fine structure doesn't support that conclusion. btw - This is really interesting. I recently posted an old triangular piece of iron on a Native American forum because of scratch marks on the back that I thought might be writing. They said the marks were incidental and ID'd it as a broken piece of kettle from the 18th or 19th C., so Colonial rather than Native American. But now I'm keeping a look out for other things besides fossils. Link to comment Share on other sites More sharing options...
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