After “WikiSpecies”
<==o †Cyrtonellida Horný, 1963 |--o †Carcassonnellidae R.J. Horný, 1997 | |--o †Baltiscanella R.J. Horný, 1997 | | `-- †B. christianiae | |--o †Carcassonnella R.J. Horný & J.S. Peel, 1996 | | |-- †C. courtessolei | | |-- †C. pragensis | | `-- †C. vizcainoi | |--o †Sarkanella R.J. Horný, 1997 | | |-- †S. novaki | | `-- †S. vokovicensis | `--o †Tachillanella R.J. Horný, 1997 | `-- †T. tafilaltensis |--o †Cyrtolitidae S.A. Miller, 1889 | |--o †Cyclocyrtonella R.J. Horný, 1962 | | |-- †C. advena | | `-- †C. eremita | |--o †Cyrtodiscus J. Perner, 1903 | | |-- †C. nitidus | | |-- †C. procer | | |-- †C. simaki | |--o †Cyrtolites T.A. Conrad, 1838 | | |-- †C. budleighensis | | |-- †C. claysferryensis | | |-- †C. craigensis | | |-- †C. dilatus | | |-- †C. disjunctus | | |-- †C. grandis | | |-- †C. hornyi | | |-- †C. inornatum | | |-- †C. inprobus | | |-- †C. insculptus | | |-- †C. kochiriensis | | |-- †C. nodosus | | |-- †C. occultus | | |-- †C. ornatus | | |-- †C. retrorsus | | |-- †C. rugosus | | |-- †C. seminulum | | |-- †C. thraivensis | | |-- †C. tuboides | | `-- †C. undulatus | |--o †Cyrtonella J. Hall, 1879 | | |-- †C. expansus | | |-- †C. mitella | | `-- †C. pileolus | |--o †Cyrtonellopsis Yochelson, 1958 | | `-- †C. huzzahensis | |--o †Kolihadiscus R.J. Horný, 1992 | | |-- †K. karlikensis | | `-- †K. tureki | |--o †Neocyrtolites | |--o †Paracyrtolites G.P. Wahlman, 1992 | | |-- †P. carinatus | | |-- †P. parvus | | `-- †P. subplanus | |--o †Peelerophon Yochelson, 1982 | | |-- †P. mergli | | `-- †P. oehlerti | |--o †Quasisinuites R.J. Horný, 1997 | | `-- †Q. rapax | |--o †Sinuitopsina R.J. Horný, 1997 | | `-- †S. plasi | |--o †Sinuitopsis J. Perner, 1903 | | |-- †S. bicarinatus | | |-- †S. congruens | | |-- †S. ferrigena | | |-- †S. hornyi | | |-- †S. neglecta | | |-- †S. nodosa | | |-- †S. subquadrata | | `-- †S. transgrediens | |--o †Telamocornu V. Berg-Madsen & J.S. Peel, 1994 | | `-- †T. cambriensis | `--o †Yochelsonellis R.J. Horný, 1966 | |-- †Y. decorus | |-- †Y. fallax | |-- †Y. fasciculatus | |-- †Y. kokeni | |-- †Y. orphanus | `-- †Y. planicosta |--o †Multifariidae V.I. Bjalyy, 1973 | `-- †Multifarites `--o †Pollicinidae Starobogotov, 1974 `--o †Pollicina Holpzapfel, 1895 `-- †P. corniculum (Eichwald, 1860) [taxonomic history]
Reference(s):
- Anonymous, 2006: Cyrtonellida [visited: 2007-01-31]
–iNet: WikiSpecies: http://species.wikimedia.org/wiki/Cyrtonellida - Evans, D. H. & Cope, J. C. W., 2003: Systematic position of Pollicina corniculum (Eichwald, 1860) (Mollusca, Tergomya) from the Middle Ordovician of the United Kingdom.
–Palaeontology: Vol. 46, #1, pp. 139-149