After Carroll, 1988, Williams, G. S., 1999-2000
<==o †Xenacanthiformes Berg, 1940 [Xenacanthida Glikman, 1964] |--o †Diploselachidae Dick, 1981 sensu Hampe, 2003 | |-- Diplodoselache woodi Dick, 1981, Miss. Eu. [] | |--o †Orthacanthus Agasiz, 1843 [Diplodus Agassiz, 1843; Didymodus Cope, 1883; Diacranodus Garman, 1885; Diplodus Woodward, 1889; Orthacanthus Fritsch, 1889; Xenacanthus Beyrich, 1946, Hotton, 1952, Berman, 1970] Carb.-Perm. Eu. Perm. NA. U. Dev or L. Carb. EAs. | | |-- †O. arcuatus (Newberry, 1856) | | |-- †O. cylindricus (Agassiz, 1843) | | |-- †O. compressus (Newberry, 1856) [=? Xenacanthus compressus] | | |-- †O. gibbosus | | |-- †O. senckenbergianus | | |-- †O. bohemicus | | |-- †O. texensis Johnson, 1999 | | |-- †O. platypternus Johnson, 1999 | | `-- †O. donnelljohnsi Johnson & Thayer, 2009 | `== Three other genera `--o †Xenacanthidae Fritsch, 1889b |-- †Anodontacanthus acutus Davis, 1881b, U. Carb. Eu. |--o †Antarctilamna Young, 1982, M. Dev. Aust. Ant. SA. | |-- †A. sp. [Colombia] | `-- †A. prisca Young, 1982 |--o †Diacranodus [Didymodus, Dittodus] M. Dev. L. Perm. NA. | |-- †D. platypternus (Cope, 1884) | |-- †D. texensis (Cope, 1884) | |-- †D. priscus Eastman, 1899 | `-- †D. striatus Eastman, 1899 |--o Expleuracanthus | `-- †E. gaudryi |?- †Iriodus [Expleuracanthus] L. Perm. Eu. |?- †Phricacanthus biserialis Davis, 1874, Penn. Eu. |?- †Platyacanthus ventricosus Fritsch, 1889b [Anodontacanthus] L. Perm. Eu. |-- †Pleuracanthus decheni Penn. Eu. |--o †Triodus Jordan, 1849 sensu Soler-Gijón & Hempe, 1998, and Hempe, 2003 | |--o †Triodus Jordan, 1849 | | |-- †T. sesselis Jordan, 1849 | | |-- †T. kraetschmeri | | `-- †T. elpia Johnson & Thayer, 2009 | `--o †Bohemiacanthus Schneider, 1996 [Schneider & Zajíc, 1994] [Triodus Jordan, 1849 in partim] | |-- †B. carinatus [Triodus carinatus] | |-- †B. lauterensis [Triodus lauterensis] | |-- †B. palatinus [Triodus palatinus] | |-- †B. obscurus (Hampe, 1989) [Triodus obscurus Hampe, 1989 ] | `-- †B. serratus [Triodus serratus] `--o †Xenacanthus [Hypospondylus, Orthacanthus] L. Perm. Eu. NA. |-- †X. compressus [=? Orthaganthus compressus (Newberry, 1856)] |-- †X. decheni (Goldfuss, 1847) |-- †X. gracilis (Newberry, 1875) |-- †X. laevissimus (Agassiz, 1837) |-- †X. meisenheimensis |-- †X. moorei (Woodward, 1889) [Orthacanthus] |-- †X. parvidens (Woodward, 1908) |-- †X. sp. [Australia] |-- †X. texanus `-- †X. texensis [=? Orthacanthus texensis Johnson, 1999]
Reference(s):
- Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - Carroll, R. L., 1988: Appendix. 594-648.
in Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - Janvier, P. & Villarroel, C., 2000: Devonian vertebrates from Colombia.
–Paleontology: Vol. 43, #4, pp. 729-763 - Johnson, G. D. & Thayer, D. W., 2009: Early Pennsylvanian xenacanth chondrichthyans from the Swisshelm Mountains, Arizona, USA.
–Acta Palaeontologica Polonica: Vol. 54, #4, pp. 649-668 [doi: 10.4202/app.2008.0051] - Long, J. A., 1990: Late Devonian chondrichthyans and other microvertebrate remains from northrtn Thailand.
–Journal of Vertebrate Paleontology: Vol. 10, #1, pp. 59-71 - Long, J. A., 1995: The Rise of Fishes: 500 million years of evolution.
–Johns Hopkins University Press, Baltimore & London, pp. 1-223 - Nelson, J. S., 1994: Fishes of the world.
–John Wiley & Sons Inc., New York, 1994, xx-600 - Wang, N.-Z., Jin, F. & Wang, W., 2004: Early Carboniferous fishes (Acanthodian, Actinoperygians and Chondrichthyes) from the east sector of north Qilan Mountain, China – Carboniferous fish sequence from the east sector of north Qilan Mountain (1).
–Vertebrata PalAsiatica: Vol. 42, #2, pp. 89-110 - Williams, G. S., 1999-2000: A Listing of Fossil Sharks and Rays of the World.
–iNet: Gainesville's Creek Fossils: Euselachii: http://www.afn.org/~afn02877/eusel.html