Native Pottery Sherds?

[cachersusie]

Would you guys mind taking a look at these and letting me know if you think any of them are Native American? They were found in a creek in North Texas. Thanks in advance.

 

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[Neanderthal]

Only the pics at the bottom right hand side (20181108_105311.jpg) appear like they could be NA pottery sherds.

 

[cachersusie]

Thank you for your reply. Are you referring to these two?

 

[ToddsPoint]

The rock with the light green bumps is called porphyry. The base rock has eroded leaving the feldspar phenocrysts sticking out. Indians used this rock for various artifacts like bannerstones, celts, and boatstones. Your rock is natural and has not been worked. Gary

 

[RGINN]

The first one you circled is kind of cool. I haven't seen that design on pottery. The second piece you circled looks like a piece of turtle shell.

 

[Kantuckkeean]

I agree with RGINN on the turtle shell. Looks like a piece of a plastron.

Kindest regards,
Kantuck