|
<==o †Agassizodontidae Zangerl, 1981 [Helicoprionidae] |-- †Agassizodus marginalis Romanovsky, 1864 [Lophodus] Miss. NA. |--o †Arpagodus Trautschold, 1879b, Penn. As. | |-- †A. rectangulus Trautschold, 1879b | `-- †A. variabilis (Newberry & Worthen, 1870) |--o †Campyloprion Eastman, 1902b, ?Penn. EEu. | |-- †C. annectans Eastman, 1902b | `-- †C. ivanovi (Karpinsky, 1922b) |--o †Helicoprion [Lissoprion, Parahelicoprion] L. Perm. Eu. ?WAs. EAs. Aus. NA. | |?- †H. mexicanus (Müllerhead, 1945) [nomen dubium, type lost] | |-- †H. bessonovi Karpinsky, 1899 [Lissoprion] | |-- †H. clerci (Karpinsky, 1894) [Parahelicoprion] | |-- †H. davisii (Woodward, in Teichert, 1940) non Bendix-Almgreen, 1966 | |-- †H. ergasaminon Bendix-Almgreen, 1966 | |-- †H. ferrieri Hay, 1907 in Hay, 1909 non Bendix-Almgreen, 1966 | |-- †H. sierrensis Wheeler, 1939 | `-- †H. nevadensis Wheeler, 1939 |-- †Sarcoprion edax Nielson, 1932, Perm. Gr. `-- †Toxoprion lecontei (Dean, 1897) [Edestus] ?Penn. NA.
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
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
Sour-Tovar, F., Quiroz-Barrosa, S. A. & Applegate, S. P., 2000:
Presence of Helicoprion (Chondrichthyes, Elasmobranchii) in the
Permain Patlanoaya Formation, Puebla, Mexico.
–Journal of Paleontology: Vol. 74, #2, pp. 363-366
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
© Mikko Haaramo, / Last updated 2002-12-25 / http://www.mv.helsinki.fi/home/mhaaramo