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Vertebrae from Louisiana swamp


Gobiosoma

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Hi,

This was found underwater, under a foot of mud in Southern Louisiana. There is a freshwater body of water called Lake Maurepas (more-uh-paw) that was originally formed by the Mississippi River before it changed course hundreds of years ago. Currently, there are predominately very fine silts and clays in the area and there are rivers that flow into this lake. It looks like a vertebral body with two long vertebral processes, but I could be completely wrong. Has anyone seen anything like this?

Thanks for any input.

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That is pretty weird. Could it be man-made? The cross section seems very thin to me. Some kind of fish hook? Frog gigger? A tool? Broken filial? Looks like it might have been something with a handle to pin down an animal.

Can you get a shot of the broken end? Also, some of the photos are blurry. Maybe take them from farther away and crop them. Also, brighter natural light might help.

Also, how heavy is it? Is it attracted to a magnet?

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Edited by CraigHyatt

Info: Craig Hyatt, retired software/electrical engineer

Experience: Beginner, fossil hunting less than a year

Location: Eagle Pass, TX USA on the border with Mexico, hot dry desert

Formation: Escondido, Marine, Upper Cretaceous

Materials: Sandstone, Mudstone, Shale, Chert, Chalk

Typical: Thalassinoides, Sphenodiscus, Exogyra, Inoceramus

Reference: http://txfossils.com/Txfossils.html

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I think it may be a fish vertebra.

Looks fish-y, to me.

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I don't think it's a vertebra. It looks like part of a turtle.

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The human mind has the ability to believe anything is true.  -  JJ

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What gets me is how thin it is in cross section. And the "stacked" appearance in cross section. It just looks like a welded tool.

post-20989-0-63354600-1467385178_thumb.jpeg

Edited by CraigHyatt

Info: Craig Hyatt, retired software/electrical engineer

Experience: Beginner, fossil hunting less than a year

Location: Eagle Pass, TX USA on the border with Mexico, hot dry desert

Formation: Escondido, Marine, Upper Cretaceous

Materials: Sandstone, Mudstone, Shale, Chert, Chalk

Typical: Thalassinoides, Sphenodiscus, Exogyra, Inoceramus

Reference: http://txfossils.com/Txfossils.html

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The texture on the flat part looks like softshell turtle. There is a similar bone in this photo.

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The texture on the flat part looks like softshell turtle. There is a similar bone in this photo.

attachicon.gifsoftshell.JPG

OK. I'm convinced by that. :-D

Info: Craig Hyatt, retired software/electrical engineer

Experience: Beginner, fossil hunting less than a year

Location: Eagle Pass, TX USA on the border with Mexico, hot dry desert

Formation: Escondido, Marine, Upper Cretaceous

Materials: Sandstone, Mudstone, Shale, Chert, Chalk

Typical: Thalassinoides, Sphenodiscus, Exogyra, Inoceramus

Reference: http://txfossils.com/Txfossils.html

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The texture on the flat part looks like softshell turtle. There is a similar bone in this photo.

attachicon.gifsoftshell.JPG

Thanks, Eric. I couldn't find my reference image.

The human mind has the ability to believe anything is true.  -  JJ

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taphonomically interesting,becaus it LOOKS fragile,but is still whole.

So a foot of mud is all it takes to preserve this?

Edited by doushantuo

 

 

 

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Wow! Thanks for zeroing in on that. I will research the turtle a little further and try to find the name of that bone.

Thank you!

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Very cool, and kudos to Eric for nailing this.

Bulldozers and dirt Bulldozers and dirt
behind the trailer, my desert
Them red clay piles are heaven on earth
I get my rocks off, bulldozers and dirt

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Preservation is often an interesting phenomenon. I've collected a thousand bits and pieces of trionyx over the decades from our Cretaceous deposits. However, never collected that particular bone. Its puzzling how one locale or formation will yield certain elements of a skeleton and others different skeletal parts.

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I have done a lot of fishing in that lake. And yes, it looks like a turtle bone, likely modern. There is one report however of a mastodon found in Manchac, so it is not completely out of line to say this might be Pleistocene in age. Cool find!

Edited by TNCollector
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Now that we know that the vertebrae belongs to a softshell turtle, we can narrow it down to the two softshell species from Louisiana: Apalone mutica (smooth softshell turtle) or Apalone spinifera (spiny softshell turtle).

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