- "Looks a bit like a giant woodlouse, but of course its a Trilobite."
Trilobites ("Three lobes") were prehistoric sea animals.
They ranged in size from a microscopic size, a millimeter in length, to the largest species, Isotelus, which grew to an enormous 72 cm long (which was about as big as they got). These sea creatures were arthropods and evolved sturdy skeletons on the outside of their bodies. There are no relatives of these creatures alive in the modern times but up to 15,000 species of trilobites