fossilized tiny egg mass???

[hndmarshall]

found west of Houston in Brookdhire in gravel load from Brazos River

at first I thought it was a piece of turtle shell then perhaps a piece of corral but when I looked at it through a microscope ???? 

I went online and looked around found something similar but its modern horseshoe crab eggs???...could this be eggs from a very old horseshoe crab? but I think they are smaller...or perhaps something else?

it is slightly curved...the clutch is flat about a 1/4 th inch think and an inch in width

this is the first thing like this that I had found.

if its eggs they don't seem to be on anything just a solid crystallized mass.

have also included a pic of horseshoe crab eggs for comparison.

a few of the pix I took of them wet others dry.

[Fossildude19]

They look like oolites/Oolitic limestone.

[daves64]

I agree.

 

[hndmarshall]

well its not what I thought but it is interesting.....I find the weirdest things

[sTamprockcoin]

If you're not highly attached to the piece it might be very pretty polished. 

[abyssunder]

I agree with Tim! They look to be ooids.
Here are nice in-situ examples from the Late Meotian - Pontian of Jitia de Jos, Romania, resembling your specimen.

 

excerpt from D. C. Jipa & A. Cehlarov. 2017. Calcareous ooid formation in clay-dominated, transgressive environment: Dacian Basin, Upper Neogene (Romania). Geo-Eco-Marina 23: 5-23