Plesiosaur vert from morocco

[Jurassicz1]

I bought this from very trusted sellers. And its pourus or if thats how you spell it. A little piece of it came off. Can i glue it with cyanorylate? (The fossil is from khouribga)this is where the piece came off

[Ludwigia]

Yes, that should work if you use the gel form.

[pachy-pleuro-whatnot-odon]

I used a waterproof wood glue when I had to re-attach the spinous process on my Zarafasaura vertebra. But, yeah, as the bone is rather porous it'll suck the glue right up unless you use a greater viscosity.

[jpc]

if you have thin and thick cyanoacrylates, you can prime the broken surfaces with a bit of thin and let it dry, then use the thicker glue to do the actyual bonding.  Works well.