Well in that case it surely has ear holes too.
And is there a human brain encased in the human skull that's encased in the alien dome?
There has to be; where else would it store the human soul of the host victim.
Man we need to get some plausible reason for Ripley having been impregnated. Why not just assume that the facehugger already got to her before she awoke in Aliens to see the two jars knocked over. I mean Burke couldn't have carried both at the same time. He got greedy and dumped the second one off as the first was doing it's business on Ripley's face. Yea the Sulaco egg crap is still a nightmare but that's all the upside down egg thing really is. A facehugger catching a ride on the Queen is completely possible. Even merely just scuttling aboard the drop ship is ok too. There simply was never ever an egg on board; just disarrayed writing. So when Bishop says it was with them all the way he meant on the drop ship as well.
Come on guys, let's fix this shit and exonerate Bishop. Yes exonerate 'cause until someone proves otherwise Bishop is still Guilty.