I must have missed this yesterday but the picture of the Predalien yesterday was in fact conceptual artwork for the Predalien chestburster. There’s a lot of bigger pictures on the site and there’s one that shows the Chestburster in full-frame. Look on the next page to see the full-version…
Update: I noticed afterwards that all the artworks say they were made in 2002 but “For Paul Anderson”. This means that production on AvP started long before it was officially announced.