After Whittington, Chang, Dean, Fortey, Jell, Laurie, Palmer, Repina, Rushton & Shergold, 1997 and Gon III, 2002
<==o †Harpetida [Harpoidea] |?- †Bohemoharpes |?- †Brachyhipposiderus |?- †Dolichoharpes |?- †Dubhglasina |?- †Eoharpes |?- †Kielania |?- †Lioharpes |?- †Loganopeltis |?- †Hibbardia [Paraharpes] |?- †Scotoharpes [Aristoharpes] |--o †Harpetidae | `-- †Harpes |--o †Harpididae | `-- †Harpides `--o †Entomaspididae `-- †Entomaspis
Reference(s):
- Gon III, S. M., 2002: Systematic listing of Trilobite families.
–iNet: http://www.aloha.net/~smgon/trisystem.htm - Whittington, H. B., Chang, W. T., Dean, W. T., Fortey, R. A., Jell, P. A., Laurie, J. R., Palmer, A. R., Repina, L. N., Rushton, A. W. A. & Shergold, J. H., 1997: Systematic Description of the class Trilobita. 331-481.
in Kaesler, R. L., (eds.) 1997: Treatise on Invertebrate Paleontology, Part O, Arthropoda 1, Trilobita, Revisited, vol 1: Indroduction, Order Agnostida; Order Redlichiida.
–The Geological Society of America, Inc. and The University of Kansas, Boulder, Colorado & Lawrence, Kansas, 1997, xxiv-530