The Island of Doctor Moreau, Alien style!
Through genetic engineering and controlled breeding of the Neomorphs, David creates, (with a little help from poor old Oram) the Protomorph.
What a convoluted family tree:
Mural Xeno to black goo.
Black goo to Hammerpede, Trilobite, Fifield monster and spores.
Trilobite to Deacon.
Spores to Neomorphs.
Neomorphs to Protomorphs.
Protomorphs to Xenomorphs.
Harry Potter didn't need his wand, he just needed some black goo and degree in genetic engineering.