After Whittington, Chang, Dean, Fortey, Jell, Laurie, Palmer, Repina, Rushton & Shergold, 1997
<==o †Paronopsidae Westergård, 1936 |--o †Peronopsis Hawle & Corda, 1847 [Mesospheniscus Hawle & Corda, 1847; Mesagnostus Jaekel, 1909]; M. Camb. NEu. CEu. | |-- †P. integer (Beyrich, 1845) [Battus integer Beyrich, 1845; Mesagnostus interger (Beyrich) Jaekel, 1909 lapsus calami?] | `-- †P. cunifer (Hawle & Corda,1845) [Mesospheniscus cunifer Hawle & Corda,1845] |--o †Diplorrhina Hawle & Corda, 1847: M. Camb. CEu. WEu. ENA. [non Diplorhina, jr. synon. of Pteraspidomorphi [Chordata: Vertebrata]] | `-- †D. triplicata Hawle & Corda, 1847 |--o †Gratagnostus Hajrullina in Repina, Petrunina & Hajrullina, 1975; M. Camb. CAs. WEu. NEu. ENA. | `-- †G. latus Hajrullina in Repina, Petrunina & Hajrullina, 1975 `--o †Peronopsella Sdzuy, 1968; M. Camb. WEu. ENA. `-- †P. pokrovskajae Sdzuy, 1968
Reference(s):
- 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: Introduction, Order Agnostida; Order Redlichiida.
–The Geological Society of America, Inc. and The University of Kansas, Boulder, Colorado & Lawrence, Kansas, 1997, xxiv-530