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Cretaceous bone from Cooke County Texas


BobWill

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A friend found what looks like a bone in the Lower Cretaceous, Duck Creek Formation of Cooke County Texas.  The site yields marine fossils like the ammonite Eopachydiscus marcianus. We have also found some fish parts and a tooth and paddle bone from an ichthyosaur. She plans to join TFF soon but asked me to post this for her.

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Are rudists found at this site? This fossil looks like shelly material that has eroded, surrounding a sediment filled core.

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3 hours ago, Al Dente said:

Are rudists found at this site? This fossil looks like shelly material that has eroded, surrounding a sediment filled core.

That would be a first for the site but it's worth considering.

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Strange kind of preservation - never saw this on bones...:look:

Looks indeed like some kind of bone...:headscratch:

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It is strange preservation if it is bone. Bob, is the darker part actually bone or is it sediment; the pictures are not detailed enough?

Does acid dissolve the white outer part? 

 

If the outer white part does not dissolve in acid and is bone, the bone might be more recent since it is so light in color.

My goal is to leave no stone or fossil unturned.   

See my Arizona Paleontology Guide    link  The best single resource for Arizona paleontology anywhere.       

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Bob, what was the context of the find?  Was it found as "float" in a waterway, eroding directly from the bedrock, loose on the ground...?

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

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The person who found it is fairly new to fossil collecting but expressed an interest in joining TFF so we may hear directly from her eventually. Meanwhile I will try to get the answer to these questions.

 

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Hello all, thank you for all the help. I found this lying loose in the creek bed. It is a very interesting piece and I hope to be able to ID it. I will try the vinegar test in a day or so and post my results.

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9 hours ago, Rockwood said:

:popcorn:

:popcorn::popcorn:I brought us an extra.

 

 

Mark.

 

Fossil hunting is easy -- they don't run away when you shoot at them!

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I am with Rockwood on this one I would show it to an expert on Pterosaurs.

From photos it looks to be a very thin walled bone with an infilled core possibly a radius or ulna ??

The other material found in the area was marine and as it dose not conform to any marine bone material.

The best assumption is that it flew to near where it was found and the bone material would be bleached so the colour does not make it recent.

The core being filled points more to fossil.

 

:popcorn:

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I soaked this object in some warm water this morning. And unlike anything else I have ever found, the "fossil" completed floats when submerged in water

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5 minutes ago, Amysmith113 said:

I soaked this object in some warm water this morning. And unlike anything else I have ever found, the "fossil" completed floats when submerged in water

Probably not a fossil. Maybe some type of foam plastic. You can try touching it with a red hot needle (hold it with pliers) to see if it smokes and gives off a burnt plastic smell.

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3 hours ago, Al Dente said:

Probably not a fossil. Maybe some type of foam plastic. You can try touching it with a red hot needle (hold it with pliers) to see if it smokes and gives off a burnt plastic smell.

It will be helpful to determine what the center is. I can imagine it being a fossil in it's own right, which just happens to float.

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21 hours ago, Rockwood said:

It will be helpful to determine what the center is. I can imagine it being a fossil in it's own right, which just happens to float.

I heard from her that she found out it will sink when saturated so the porosity was keeoing it afloat originally. The fossil does not react with acid if that helps any.

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Volcanic bomb?

 

 

Mark.

 

Fossil hunting is easy -- they don't run away when you shoot at them!

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