Mikko's Phylogeny Archive Main Groups of Protostomes   †Olenidae

<==o †Olenidae
   |== other olenids
   |-- †Olenus
   |--o †Leptoplastus
   |  |-- †L. crassicornis
   |  `-- †L. abnormis (Westergård, 1944)
   |-- †Parabolina
   |--o †Propeltura
   |  |-- †P. bidentata
   |  `-- †P. planicauda
   |--o †Peltura
   |  |-- †P. acutidens
   |  |-- †P. paradoxa
   |  |-- †P. transiens
   |  |-- †P. minor
   |  `-- †P. scarabaeoides
   |--o †Sphaerophthalmus
   |  `-- †S. alatus [incl. S. major]
   `--o †Ctenopyge
      |== other Ctenopyges
      |?- †C. ceciliae
      |--o †(Mesoctenopyge)
      |  |== other Mesoctenopyges
      |  `-- †C. (M.) tumida Westergård, 1922
      |--o †(Eoctenopyge)
      |  |== other Eoctenopyges
      |  `-- †C. (E.) augusta Westergård, 1922 [C. flagellifera angusta]
      `--o †(Ctenopyge)
         |== other Ctenopyges
         `--o †C. (C.) affinis
            |-- †C. (C.) a. affinis
            `-- †C. (C.) a. gracilis Henningsmoen, 1957

Reference(s):

Clarksson, E. N. K., Ahlgren, J. & Taylor, C. M., 2003: Structure, ontogeny , and moulting of the olenid trilobite Ctenopyge (Eoctenopyge) angusta Westergård, 1922 from the Upper Cambrian of Västergötland, Sweden.
–Palaeontology: Vol. 46, #1, pp. 1-27

Gon III, S. M., 2002: Systematic listing of Trilobite families.
–iNet: http://www.aloha.net/~smgon/trisystem.htm