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This piece of limestone looked like sea shells (clams or brachiopods) at first glance. However it’s one bumpy continuous surface. Any idea? The rock would be around 305 million years old. The rock broke easily along this surface which made it easy to see. Shells typically show white preserved Agagonite on them as well. No such preservation on this surface.

 

Rock from Western Pennsylvania, United States. The surface is wet.

 

Ruler is in inches.

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Fossils of Parks Township - ResearchCatalog | How-to Make High-Contrast Photos

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This looks to me like a jumbled mass of Calamites  bits. 

They were a type of arborescent horsetail. 

    Tim    -  VETERAN SHALE SPLITTER

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It’s woody, that’s for sure. I looked at it closely in the microscope and there is a thin layer of what is or looks like coal with white veins. I’m starting to believe this is a mass of land plants that got buried at sea.

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Fossils of Parks Township - ResearchCatalog | How-to Make High-Contrast Photos

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Cordiates leaves is another possibility that would explain the absence of transverse features.

The white veins look like conducting tissue (leaf traces) in lycopod cortex/periderm. 

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11 hours ago, cngodles said:

It’s woody, that’s for sure. I looked at it closely in the microscope and there is a thin layer of what is or looks like coal with white veins. I’m starting to believe this is a mass of land plants that got buried at sea.

That would explain it's presence in limestone, and possibly the lack of detail.  :) 

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    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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Please put your pics directly on the forum !

 

Coco

----------------------
OUTIL POUR MESURER VOS FOSSILES : ici

Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici
Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici
Mâchoires sélaciennes récentes : ici
Hétérodontiques et sélaciens : ici
Oeufs sélaciens récents : ici
Otolithes de poissons récents ! ici

Un Greg...

Badges-IPFOTH.jpg.f4a8635cda47a3cc506743a8aabce700.jpg Badges-MOTM.jpg.461001e1a9db5dc29ca1c07a041a1a86.jpg

 

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  • 1 month later...

Carbonaceous films are often indicative of plant remains. 

Also, we find Devonian plants in limestone in upstate/western NY. 

They are not uncommon. 

 

You may have to settle for Calamites sp. 

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    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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I get to take this to show a friend who is at the museum, so he will give this one last look over. The only issue I have with Calamites is the lack of nodes. Throughout everything there, I don’t see any of the node termination points. But I agree with it being a plant, it looks very plant-like. :)

Fossils of Parks Township - ResearchCatalog | How-to Make High-Contrast Photos

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On 11/29/2019 at 3:28 AM, Rockwood said:

Cordiates leaves is another possibility that would explain the absence of transverse features.

no nodes in them ;)

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