ID strange micro marine colony

[Kcee]

I don't have a clue as to what these tiny things really are. These were found inside of a sandstone boulder that was broken apart, which was full of marine fossils. The size of the entire area seen in the first photo is about 8mm x 10mm and 0.50mm thick. I'm having a very difficult time wrapping my brains around what I'm looking at here, all of those tiny white dots appear to be embedded in some sort of resin-like material and connected by a web-like structure. That web-like structure is very similar to what you see with bryozoans, diatoms and radiolarians but I can not find anything that looks like these things. Anyone have any ideal as to what these things really are?????

[Ludwigia]

3 hours ago, Kcee said:

 Anyone have any ideal as to what these things really are?????

 

Check this out: Oolite

[westcoast]

Looks like crab shell

[Rockwood]

I don't know my crabs well enough, but I'm in the arthropod shell camp too.

[Al Dente]

I agree with crab shell.

[sixgill pete]

I am also in the crab shell camp on this one.

[Tidgy's Dad]

Can I come camping too ? 

[Kcee]

I am in no position to disagree or agree with anything on this one, all I can do is look and try to compare what I see in photos to what I see here. If I find out anything on this, I'll indeed let you know what I find. Thanks for the inputs....