Possible fossils

[Maytizl]

Hello my 9 year old son loves finding unique rocks, fossils, bones, etc. Can anyone tell me if these are any types of fossils? We’re located in Ruidoso, NM, our property has a lot of sandstone in some areas. Thanks

[Advantage]

Hi 

Good your son is interested. I can see some possible Bivalves and Brachiopods, so yes certainly some fossils.

[Brandy Cole]

I'm not very educated on marine fossils, but at the top left of your third (and next to last) picture, there is a fossil item that resembles a rugose coral to me.  Someone with more knowledge could probably tell you more about that, especially if you add a picture focused more on that item.