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Dinosaur fossil?


Jessiejmt

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Hey there,

So I’m a total newbie, and don’t have any education in fossils. But I have grown up rock hounding all over the Pacific Northwest.  Happened to be hunting for sea glass, and ran across this gem on Cat Island, Bahamas. I’ve brought it to several rock shops to try and get some information or ideas of what it might be but to no avail. 

Any ideas?   Hope it’s an interesting one for anyone to look at on here :)

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90FC5641-3EB3-44CA-A09C-52702A628A9A.jpeg

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To add a couple more views& info

 

it was found in the rocks above the shore in a small cove. 

Not sure what other info might be useful?

 

5F744664-E99B-4A61-A895-14DB4B730D02.jpeg

C9A05FAE-7DD3-4BBD-BFB1-05306E50F8C1.jpeg

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My guess would be a bioeroded oyster fragment.

Of what I'm sure, it has really nice Entobia markings. :)

 

b.jpg.42f29ecb97e7c72f77c73e360dfd1a9a.jpga.jpg.4163ecb8774a19e8d29acf44279e6c6c.jpg

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" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

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1 minute ago, Jessiejmt said:

So it doesn’t scratch glass, tried multiple times. 

Then Tidgy's dad is probably correct with calcite,

Does it fizz when vinegar is dripped on it?

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Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

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Looks like a piece of oyster shell.

What do you see that would make you make the leap to dinosaur?

 

Edit: looks as if abyssunder beat me to the line.

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3 minutes ago, abyssunder said:

My guess would be a bioeroded oyster fragment.

Of what I'm sure, it has really nice Entobia markings. :)

 

3 minutes ago, caldigger said:

Looks like a piece of oyster shell.

To My eyes the layering seems too thick for shell.

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Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

My Fossil collection - My Mineral collection

My favorite thread on TFF.

 

 

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3 minutes ago, ynot said:

To My eyes the layering seems too thick for shell.

Not necessarily. Some oysters may have very thick shells. :)

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

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29 minutes ago, abyssunder said:

Some oysters may have very thick shells.

I am not referring to the thickness of the shell, but to the thickness of the layers of this piece. ( Lamina)

Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

My Fossil collection - My Mineral collection

My favorite thread on TFF.

 

 

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So i did the vinegar test and it fizzed. It wasn’t a major fizzed but definitely a reaction. 

I guess I was thinking it could’ve been a fossilized dinasour bone (aquatic of some sort) maybe rib bone, due to the thick layers and pouris edges. Also it seems to circle at the end, as if it was hollow. 

 

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22 minutes ago, ynot said:

I am not referring to the thickness of the shell, but to the thickness of the layers of this piece. ( Lamine{?})

It might be in range, if I include Crassostrea gryphoides or similar in the possibilities. :)

 

Figure3_0cdd230269.jpg.de73be9477901bd05e0c5e43c35280f5.jpg5c3a5bee6474b_Figure3.thumb.jpg.9b22eb54400b6c71aa68cfb9b2a8807f.jpg

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" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

My Library

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Okay what I was thinking was bone porousness was “entobia markings” ~ thanks Abyssunder

Edited by Jessiejmt
Specify markings
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55 minutes ago, abyssunder said:

Not necessarily. Some oysters may have very thick shells. :)

 

20190112_135646.jpg

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13 minutes ago, Rockwood said:

Any chance it's a flake of mammoth tooth ?

Sponges bore in lithic not in osteic substrate. :)

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" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

My Library

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27 minutes ago, Jessiejmt said:

Okay what I was thinking was bone porousness was “entobia markings” ~ thanks Abyssunder

You are welcome. :)

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

My Library

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If it helps anyone, I think this object I found in the Bahamas a decade or so ago is very similar to yours. 

 

For what it's worth, I always thought it was some type of calcite but could be wrong...

bh1.jpg

bh2.jpg

bh5.jpg

bh6.jpg

bh9.jpg

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I collect shells and I am pretty sure this is the weathered lip of some large Gastropoda maybe lobatus gigas

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On ‎1‎/‎12‎/‎2019 at 3:33 PM, ynot said:

Welcome to TFF!

Can You see if it will scratch a knife blade or a piece of glass.

Thanks.

Knife blade? Neat trick. I'll have to remember that.

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