This picture shows fossilised Sj in Prometheus

Come on dude ... that is from the first trailer. We have talked that trough already. It's much more likely to be a helmet.

Perhaps but what's interesting is that it's already a bio fossilised helmet.

a bio fossilized helmet?!?

And it was laying within proximity to an SJ body (or suit). Been discussed to death already.

not fossilised thats the design of the helmet, organic metal/biomechanics watch the other trailers...

Even with it being bi-mechanical, I think the "bio" part is dead on that "helmet".

Yep the living bits were probably fossilised.

Well if they are examining the SAME head from the SJ that appears "fossilized" in ALIEN, they'd have to go and put it back, for Dallas and crew to find it!

Right? If it's the same one, and Prometheus is set 30 years prior, then Dallas and crew would have discovered a headless SJ! Just a continuity point but...

but these two skulls/heads look too differnt from the sj in alien, and the one in this pixture, the on in this picture is round and the one from alien is more with a cone shaped head,