Will,, it looks like there are at least 2 aliens. 1 looks like it has a head from AVPR, as in Chet. BTW, where did that term come from? Whas it in the movie? I have no plans to watch that thing again...
The other Alien appears to be more inspired by something more like from the early films. Regardless, the head is too short. It's supposed to be a phallic symbol remember? Somebody give that Alien some Viagra please! Without the long head, it just doesn't look that ominous.