Possible jaw I’d help? and is this a mammal foot or leg bone or just a whale rib bone piece?

[AshHendrick]

Found these in eastern NC river this weekend and could use some help identifying. It was in an area most likely Yorktown , found among great white teeth, a horse tooth, tilly  bones, whale bone and some shell fragments. Lot of reworked material in the gravel. 
 

This item looks like the bones of the front of a lower jaw to me but these holes off to the sides confuse me - they are rounded inside like a tooth or tusk might have sat in them but the angles are odd - I could be wishful thinking here - just seemed out of the ordinary to me. Then the other is a bone it’s much lighter and the pores are much larger than the whale bone typical in the area and I can’t get the best photo of contours but it really looks similar to a foot or leg bone of a mammal I just don’t know what - but I’ll accept it could just be a worn whale rib bone - just gotta be sure, ya know? I don’t ever come across much mammal stuff so I’m struggling to say for sure and any help is appreciated!

 

@bbostick your the main man I know can say if whale or not if you don’t mind sharing input!  

[AshHendrick]

Here is the leg/rib bone. It’s still wet and even with the flash hard to capture contours but if any other pics are wanted for either to aid in identification just hit me up. 

[Mahnmut]

Hi,

that first one seems to have midline symmetry, so skull, pelvis or vertebra, but thats about all I can say. The hollow ends may just be left by weathered spongiosa, cannot imagine tusks in that angle.

Best Regards,

J

[rocket]

Nearly impossible to decide what animals they belong to. Mammal for sure, first one could be the middle part of a lower jaw from ???

second one, leg bone, hope not human 

[AshHendrick]

Well it’s definitely fossilized so I would be lying if I said I wouldn’t like the possibility of it being human haha that would be an amazing find that old, haha!