Looks like iron or hematite

Looks to be a cervical vertebrae or neck

Boy that looks like bone in the first, third and fourth picture. Your hand gives it scale. I would still say it looks like a fossilized femur to me, but of what I don’t know. I will do a little research and see if I can figure more out.

I’m kind of thinking femur, but not sure until I can see other side. I see what looks like the trochanteric fossa and the head of the Femur also the greater and lesser trochanter.

Size? Do you have pictures of the other side?

Glad to help. I lived all my life here in the wilds of Wisconsin and know the wildlife well. It’s fun to push my brain into areas I don’t have the knowledge about. Yours was such the case. I do however have the reference materials I need to cover the animal remains of the US.

Ok I’m going to say Harbor Seal. Final answer.

Used the book Animal Skulls by Mark Elbroch, for id.

Not to sure what seals you have in your area but I’m almost certain a seal.

Ok I think I have it. It has the same shapes and size of a seal. Going on what I can see on the second picture.

I can say it is the left side. Looking to see if I can id it

Also the Mandibular fossa is present.

About dog sized. Larger dog that is.

The one on the right looks like a bird wing bone.

Looks like a sphenoid bone of a mammal. The bubble like bump is the auditory bulla or ear area.

Feeding trails. A trace fossil

Large ungulate looks like

Looks like the elbow end of a humerus

That is where the knee is.

Femur