Kolihapeltis rabatensis Trilobites Order Corynexochida, Family Styginidae Geological Time: Middle Devonian Size mm = 1 inch): Trilobite is 75 mm long (curve measure), 48 mm across (with spines). Matrix: 70 mm by 80 mm Fossil Site: Aatchana, Morocco
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.
Ammonites are an extinct group of marine invertebrate animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids than they are to shelled nautiloids such as the living Nautilus species.