Ok..I have to ask...egg?

[Planko]

Hi Everyone, 

 

I have had this piece for about a year now. Every now and then I pick it up and take another good look. I know it might not be an egg but I need to at least ask the question. If anything I can add it to my outside rock collection and be done with it. Found NSR, Delta County, TX. I have read the Egg topics here. There is still texture on the "shell" even with it being in the river rolling around. 

 

Thanks in advance for you time and knowledge.

[Rockwood]

Weathered concretion. Research hydration relating to rock weathering for more insight. 

[Fossildude19]

Concretion. No egg shell/ egg shell texture.