| It could work like that, but in the inquiry meeting into the destruction of the Nostromo, someone asks if such a creature has ever been found on LV426, to which a woman expert sitting at the table replies "None". That's when Ripley asks "Did IQs just drop while I was away?" It is a very short time after that until they lose contact with LV426, but it would be time enough for someone from the planet to investigate.
It still sounds contrived to me, it is a very small planet, not to have been fully explored. |