Wikipedia
Dipleura
Dipleura is a trilobite in the order Phacopida.
It was described by Green in 1832, and the type species is Dipleura dekayi. The type locality was in the Hamilton Group in New York.
These fast-moving low-level epifaunal carnivores lived during the middle Devonian and Ordovician periods from 460.9 to 383.7 Ma.