Looks a bit like a giant woodlouse but, of course, it's a trilobite.

Sea Monsters, Dangerous Seas

Isotelus was a large trilobite from the Ordovician. It was a bottom feeder that lived on the seafloor.

Creature attributesEdit

Physical appearance and biologyEdit

Isotelus was a giant trilobite. Like all the other arthropods during the Ordovician, it had a large and thick carapace. Underneath its armour 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 MonstersEdit

Dangerous SeasEdit

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 scenesEdit

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.

List of appearancesEdit

Notes and referencesEdit

Community content is available under CC-BY-SA unless otherwise noted.