Pleistocene rib and vertebra found independently in Eastern Lesser Poland

[Agonim]

 

I was told the rib could belong to some Pleistocene horse or a young mammoth. There were also proposals that the vertebra belonged to the steppe bison or the woolly rhinoceros. They both were found in Eastern Lesser Poland. What do you think? Thanks in advance!

 

[Brandy Cole]

I don't know about the animals that lived in Poland's Pleistocene, but I think bison could be a candidate.  With vertebrae and ribs, it can be very tough to distinguish between different species.

[sjaak]

Bowl shape of the vertebra is similar to bovine or rhino. I think bovine (wisent maybe) is more likely because rhino is usually bigger. 

[LordTrilobite]

I agree that the vertebra looks like possibly bovid or rhino. It's a shame the lateral processes are broken off, as those are the most clearly identifiable. But I would lean toward rhino.
It's definitely a cervical vertebra though. And it's not the last cervical either. So cervical vert 3 to 6 are a possibility.

 

Here's a digital composite of my woolly rhino cervical vertebrae for reference.

I don't think the rib is really identifiable sadly. The head of the rib is gone. So that makes any identification extra hard to near impossible.
The only thing you have to go on is the size and curve really.