After Whittington, Chang, Dean, Fortey, Jell, Laurie, Palmer, Repina, Rushton & Shergold, 1997
<==o †Eodiscidae Raymond, 1913 [Eodiscidae Raymond, 1913b emend. Jell, 1975a] [Dawsoniidae Resser, 1937; Pagetidae Kobayashi, 1935; Aulacodiscidae Hupé, 1954; Opsidiscidae Hupé, 1953b; Pagetiellinae S. Zhang in W. Zhang, Lu et al., 1980] |--o †Eodiscus Hartt in Walcott, 1884b [Spinodiscus (Salter) Kobayashi, 1943; Deltadiscus Kobayashi, 1943] | |-- †E. scanicus (Linnarsson, 1883)[Microdiscus scanicus Linnarsson, 1883; Eodiscus pulchellus Hartt, in Walcott, 1884b; Microdiscus punctatus precursor Matthew, 1886; Deltadiscus precursor (Matthew) Kobayashi, 1943] | `-- †E. punctatus (Salter, 1864c) [Microdiscus punctatus Salter, 1864c; Spinodiscus punctatus (Salter) Kobayashi, 1943] |--o †Dawsonia Hartt in Dawson, 1868 [Aculeodiscus Snajdr, 1950; Metadiscus Kobayashi, 1943] | |-- †D. dawsoni (Hartt in Dawson, 1868) [Microdiscus dawsoni Hartt in Dawson, 1868] | |-- †D. bohemicus (Snajdr, 1950) [Aculeodiscus bohemicus Snajdr, 1950] | `-- †D. sculptus (Hicks in Harkness & Hicks, 1871) [Microdiscus sculptus Hicks in Harkness & Hicks, 1871; Metadiscus sculptus (Hicks) Kobayashi, 1943] |--o †Helepagetia Jell, 1975a | `-- †H. bitruncula Jell, 1975a |--o †Kiskinella Romanenko & Romanenko, 1962 | `-- †K. cristata Romanenko & Romanenko, 1962 |--o †Macannaia Jell, 1975a | `-- †M. maladensis (Resser, 1939) [Pagetia maladensis Resser, 1939] |--o †Opsidiscus Westergård, 1950b [nom. nov. pro Aulacodiscus Westergård, 1946 non Douvillé, 1921] | `-- †O. bilobatus (Westergård, 1946) [Aulacodiscus bilobatus Westergård, 1946] |--o †Pagetia Walcott, 1916b [Eopagetia Kobayashi, 1943; Mesopagetia Kobayashi, 1943] | |-- †P. bootes Walcott, 1916b | |-- †P. significans (Etheridge, 1902) [Microdiscus significans Etheridge, 1902; Eopagetia significans (Etheridge) Kobayashi, 1943] | `-- †P. clytia Walcott, 1916b [Mesopagetia clytia (Walcott, 1916b) Kobayashi, 1943] |--o †Pagetides Rasetti, 1945b [Discomesites Öpik, 1975b] | |-- †P. elegans Rasetti, 1945b | `-- †P. fragum (Öpik, 1975b) [Discomesites fragum Öpik, 1975b] `--o †Sinopagetia W. Zhang & Yuan, 1981 `-- †S. jinnanensis (Lin & Wu in W. Zhang, Lin et al, 1980) [Pagetia jinnanensis (Lin & Wu in W. Zhang, Lin et al, 1980; Sinopagetia niemengguensis W. Zhang & Yuan, 1981]
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: Indroduction, Order Agnostida; Order Redlichiida.
–The Geological Society of America, Inc. and The University of Kansas, Boulder, Colorado & Lawrence, Kansas, 1997, xxiv-530