Bones fossils in Carboniferous/pensilvanian, Rhode Island, USA

[Marcos]

Hi everyone,

I found what looks like bones fossils in a beach that has plant fossils from the Pensilvanian, mostly ferns. I see one smaller bone and a larger partial bone with the ball joint. They are both in the same block. Bone looking mineralization or fossil? If those are fossil bones I would assume some large land or amphibious animal to coexist with ferns. Hope someone can shed some light.

Thank you,

Marcos
 

 

smaller bone

 

 

larger partial bone

 

 

back of the rock

[Fossildude19]

Sorry, but these do not look like bones to me. 

Can you take the 1st picture again, from directly above the item?

Preferably in daylight.