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<==o †Actinoceratida Teichert, 1933 [nom. transl. Teichert, 1964 pro Actinoceroidea Teichert, 1933] sensu Kröger & Mapes, 2007 [Actinoceroida; Actinoceratoidea] sensu Kröger & Mapes, 2007 [Actinoceroida, Actinoceratoidea] |--o †Georginidae Wade, 1977; late E.-early M. Ord., Aust, Asia | |-- †Georgina | `-- †Mesaktoceras |--o †Wutinoceratidae Shimazu & Obata, 1938; ?late E.-early M.Ord (Whiterock); Asia. Aust. NAm. NEu. | |-- †Wutinoceras | |-- †Cyrtonybyoceras | |-- †Adamsoceras | `== other genera. |--o †Polydesmiidae Kobayashi, 1940; ?late E- M Ord. CAs.EAs. | |-- †Polydesmia | `-- †Ordoceras |--o †Actinoceratidae Seamann, 1853; ?late E.-M.Ord.-E.Sil. | |-- †Actinoceras | |-- †Kochoceras | |-- †Paractinoceras | |-- †Saffordoceras | `-- †Troostoceras |?-o †Lambeoceratidae | `-- †Lambeoceras |?-o †Huroniidae | |-- †Huronia | |-- †Huroniella | `?- ?†Discoactinoceras |==o †Armenoceratidae Troedsson, 1926; early M.Ord-Sil. | |-- †Armenoceras | |-- †Nybyoceras | |-- †Selkirkoceras | |-- †Elrodoceras | `--o †Gonioceratidae late M.Ord, NAm. | `-- Gonioceras `--o †Ormoceratidae Seamann, 1853 |-- †Ormoceras |-- †Metarmenoceras |-- †Parormoceras |-- †Troedssonoceras `== other genera.
Reference(s):
- Anonymous, 2009: Actinocerida (visited: 2010-10-22)
–iNet: Wikipedia: http://en.wikipedia.org/wiki/Actinocerida [last updated: 2010-06-09]