The file '(Slightly) More Detailed Facehugger Bottom (With Registration) 3D Printer Model' is (stl) file type, size is 5.6MB.
I added registration points/pegs on this model so that you can combine this "(Slightly) More Detailed Facehugger Bottom" with the remix of the top portion from "Agisis Ultimate Alien Face Hugger (40in x 23in - LIFE SIZE!)" https://www.thingiverse.com/thing:6674157. This should help align the top to the bottom when gluing together as I've seen comments that people had trouble aligning the two halves.
detailed_bottom_with_registration.stl | 13.0MB | |
registration_pegs.stl | 1.5MB |