Edmontosaurus is a genus of hadrosaurid (duck-billed) dinosaur. It contains two known species: Edmontosaurus regalis and Edmontosaurus annectens. Fossils of E. regalis have been found in rocks of western North America.
The fossil that inspired Alien: 300million-year-old relic which designer used to create extra-terrestrials in sci-fi classic
Alien abduction: This fossil crinoid, which inspired the artist who designed the extra-terrestrial antagonist of the Alien films, was stolen and and later returned to a museum in Switzerland. I can see the resemblance.