Years ago, a cousin who collected fossils, gave these items from his garage. I was young at the time, but I think I recall him describing one the large one as a bit of a mammoth and the smaller one as some sort of bone, possibly from the middle east. I also have what I am fairly sure is a mammoth tooth from those times.
I don't know whether you guys recognise these, or can give me a bit more of an idea as to what they might be if i've got it wrong?
Interesting specimens! definately looks like bone but they are hard to tell exactly what they are although your last image looks a bit like a worn out tooth.
Unfortunately if they have been dredged up from the sea the salt they contain cracks them as they dry and they come apart.
They have to be soaked in distilled water for a long time, thus removing the salt, then soaked in pva glue or covered in b72 (acetone with plastic pellets disolved in the solvent) to hold them together.
I hope it's ok as I have attached a couple of images of a series 5 Mammoth tooth (they had 6 sets?) that we have in our collection.
Also a smaller specimen from the Holderness coast and a piece of 'bark' from a tusk, often mistaken as water worn asbestos.