some species after Kröger & Mapes, 2005, and Kröger & Mapes, 2007
<==o †Pseudorthoceratoidea Flower & Caster, 1935 sensu Engeser, 1998 [Pseudorthocerataceae Flower & Caster, 1935 (nom. transl. Sweet, 1964 ex Pseudorthoceratidae Flower & Caster, 1935] |?- †Elmoceras graffhami Kröger & Mapes, 2007 |?- †Hesperoceras Miller & Youngquist, 1947 |?- †Stiloceras Zhuravleva, 1978 |--o †Carbactinoceratidae Schindewolf, 1943 | `--o †Carbactinoceras Schindewolf, 1943 | |-- †C. torleyi Schindewolf, 1943 | |-- †C. aliense Chen, 1981 | |-- †C. fayettevillense (Croneis, 1926) [Rayonnoceras fayettevillense Croneis, 1926] | |-- †C. giganteum Liang & Wang, 1991 | |-- †C. insulare (Foord, 1897) [Orthoceras insulare Foord, 1897] | |-- †C. procerum Kröger & Mapes, 2007 | `-- †C. protentum Gordon, 1965 |--o †Pseudactinoceratidae Schindewolf, 1943 | |-- †Pseudactinoceras | |-- †Macroloxoceras Flower, 1957 | |-- †Berganoceras Flower, 1939 | |?- †Rayonnoceras solidiformes Croneis, 1926 | `--o †Campyloceras McCoy, 1844 | |-- †C. unguis (Phillips, 1836) [Orthoceras unguis Phillips, 1836] | |-- †C. arcuatum (Phillips, 1836) [Orthoceras arcuatum Phillips, 1836] | |-- †C. novosemelicum Shimansky, 1996 | |-- †C. striatulum (Kröger & Mapes, 2004) [Mooreoceras striatulum Kröger & Mapes, 2004] | `-- †C. imoense (Kröger & Mapes, 2004) [Mooreoceras imoense Kröger & Mapes, 2004] `--o †Pseudorthoceratidae Flower & Caster, 1935 emend. Flower, 1939 |--o †Pseudorthoceras Girty, 1911 emend. Kröger & Mapes, 2004 | `-- †P. knoxense (McChesney, 1859) [Orthoceras knoxensis McChesney, 1859; Pseudorthoceras knoxense (McChesney) Girty, 1911, 1915; Kröger & Mapes, 2004] |--o †Mitorthoceras Gordon, 1960 emend. Kröger & Mapes, 2005 | |-- †M. perfilosum Gordon, 1960 [taxonomic history] | `-- †M. crebriliratum (Girty, 1909) [taxonomic history] `--+--o †Hebestorthoceras Kröger & Mapes, 2005 | |-- †H. unicamera (Smith, 1938) [Orthoceras unicamera Smith, 1938] | |-- †H. indianum (Girty, 1909) | |-- †H. tricamera (Smith, 1938) | |-- †H. brokenarrowense Kröger & Mapes, 2005 | `?- †H.? caneyanum (Girty, 1909) |-- †Aidaroceras Doguzhaeva, 2002 |-- †Bitaunioceras Shimizu & Obata, 1936 `-- †Shikanoceras Shimansky, 1954
Reference(s):
- Kröger, B. & Mapes, R. H., 2005: Revision of some common Carboniferous genera of North American orthocerid nautiloids.
–Journal of Paleontology: Vol. 79, #5, pp. 1002-1011 - Kröger, B. & Mapes, R. H., 2007: Carboniferous actinoceratoid Nautiloidea (Cephalopoda) – a new perspective.
–Journal of Paleontology: Vol. 81, #4, pp. 714-724 [doi: 0022-3360/07/0081-714]