| “ | Looks a bit like a giant woodlouse but, of course, it's a trilobite. | ” |
Isotelus was a large trilobite from the Ordovician. It was a bottom feeder that lived on the seafloor, similar to today's crabs.
Creature attributes[]
Physical appearance and biology[]
Isotelus was a giant trilobite. Like all the other arthropods during the Ordovician, it had a large and thick carapace. Underneath its armor was a soft underbelly with a pair of long antennae and small legs.
Isotelus had large, compound eyes. The trilobite was black in colour but underwater, it appeared light blue.
In Sea Monsters[]
Dangerous Seas[]
Nigel Marven found an Isotelus carcass on the seashore and fitted a camera into one of its eye sockets to create the Trilobite camera.
The next day, as Nigel sailed into the open waters, a living Isotelus swam beneath his speedboat. He later threw the Trilobite cam into the water and waited for a Cameroceras to appear. As he waited, a Megalograptus attempted to feed on the carcass but it was deterred.
Later, a Cameroceras appeared and ate the Isotelus.
Behind the scenes[]
Isotelus is never named on the show, but is called a trilobite instead. Its name was revealed in Sea Monsters: Prehistoric Predators of the Deep instead.