†Heterocaryon Raymond 1937 (trilobite)
Trilobita - Harpetida - Harpetidae
Parent taxon: Harpetidae according to P. A. Jell and J. M. Adrain 2003
Sister taxa: Australoharpes, Bohemoharpes, Bowmania, Brachyhipposiderus, Conococheaguea, Dolichoharpes, Entomaspis, Eoharpes, Harpes, Hibbertia, Kathrynia, Kielania, Lioharpes, Palaeoharpes, Paraharpes, Scotoharpes
Subtaxa: none
Ecology: fast-moving low-level epifaunal suspension feeder