Shell fossils

[Grumpie]

Not sure what these are. They were found in Austin, Tx
I have several specimens that were found 75mi apart. Some were unearthed from several feet deep and others on top in Creek beds.
They make great door stops.

 

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[Grumpie]

View attachment 1384569
Bottom side

 

[Grumpie]

Did a little research online and discovered that the approx age is 150 Mya.
Google "common shell fossils in central" TX.
They are common here if you know where to look.

 

[Charlie P. (NY)]

Look like oyster shell fossils.

The link to your "underside" image didn't work for me.

Your

 

[Grumpie]

Look like oyster shell fossils.

The link to your "underside" image didn't work for me.

Your

Should b good now.
The one with the hole in the center had the giant pearl