Isotelus maximus
Ordovician trilobite
Trilobites crawled along the bottom of shallow seas for around 300 million years, from the beginning of the Cambrian Period to the end of the Permian Period. The name “trilobite” means “three lobes.” They were an ancient kind of arthropod, the group that includes insects, spiders, and crustaceans.
Trilobites of the Isotelus genus are the largest in the world. Some reached over two feet in length! They lived in Indiana during the Ordovician Period, between 480 and 430 million years ago.
Length: 9 inches
