Oh, so the xenos were baby sjs?

... I really don't see the Xeno as an Engineer. I see the Engineer/SJ experimenting with various DNA recipes to find a viable combination that suits their purposes. Just my thoughts on that subject Funkpotamus.

The Mural to me seems to show, well as i would interpret it.... That the Space Jockeys or one is using another Space Jockey as a Host, maybe to test out its new creation at the sacrefice of another.... Having seen the Cast Credits (Sacrefice Engineer) and seeing the Running Space Jockeys and the holes in 3 of the sarcophagus i assumed that indeed that Mural has a connection and indeed would play a part in the reason for the sarcophagus and holes and one Engineer. I thought that one Engineer turned his creation against his brothers so he could become the only God left.... But having hear there is no link to Alien and what so called leaked screener viewers had said, maybe thats not the case... Maybe they are making it up and maybe thus my hunch could be correct, i will find out in 10 days.

No, none of that is right.

Oh, I went back and read O'bannon's script. I was wrong. The facehuggers were part of another species, entirely. One that was native to LV 426 and, I suppose, died out. That species had males and females, but reproduced using the facehuggers. So, I suppose, early on, it was assumed that the SJ had crash-landed on the planetoid, gone out to explore, brought back an egg and had become infected. Of course, all that was trashed by the time the film was made. No pyramid and so forth. Still, it's sort of cool to think of the xenos as an immature member of a pre-technological, tool-using civilization. I mean, to think that they become intelligent and cultured as they mature. From the script: STANDARD: Well, those things out there aren't the same, you know -- the spaceship and the pyramid. They're from different cultures and different races. That ship just landed here -- crashed like we did. The pyramid and the thing from it are indigenous. Then, later: STANDARD Then that tomb (pyramid)... must have been some kind of fertility temple... where they stored their eggs, and maybe held mating rituals...

It's all to do with converging DNA, these being adopt the DNA of their host, and are born with the characteristics of it