Ctenacanthoidea

Ctenacanthoidea; Temporal range: 407.6–15.97 Ma PreꞒ Ꞓ O S D C P T J K Pg N Emsian—Early Miocene
	Ctenacanthus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	†Ctenacanthiformes
Superfamily:	†Ctenacanthoidea; Zangerl, 1981
Subtaxa
	†; †; †; †; †Ctenacanthidae; †; †; †; †Wodnika;

Ctenacanthoidea is an extinct superfamily of prehistoric sharks. These nectonic carnivores of actively mobile appeared 407 Ma ago, and managed to survive until the early Miocene (Wodnika). Its distribution is practically worldwide.^[2]

References[]

^ Michael E. Williams (1998). "A new specimen of Tamiobatis vetustus (Chondrichthyes, Ctenacanthoidea) from the Late Devonian Cleveland Shale of Ohio". Vertebrate Paleontology. 18 (2): 251–260. doi:10.1080/02724634.1998.10011054.
^ S. Stamberg (2001). "Fin spine of a ctenacanthoid shark (Elasmobranchii, Ctenacanthoidea) from the upper Stephanian of the Krkonoše Piedmont Basin (Bohemia)". 76 (2): 141–148. {{cite journal}}: Cite journal requires |journal= (help)

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[1] Michael E. Williams (1998). "A new specimen of Tamiobatis vetustus (Chondrichthyes, Ctenacanthoidea) from the Late Devonian Cleveland Shale of Ohio". Vertebrate Paleontology. 18 (2): 251–260. doi:10.1080/02724634.1998.10011054.

[2] S. Stamberg (2001). "Fin spine of a ctenacanthoid shark (Elasmobranchii, Ctenacanthoidea) from the upper Stephanian of the Krkonoše Piedmont Basin (Bohemia)". 76 (2): 141–148. {{cite journal}}: Cite journal requires |journal= (help)

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Ctenacanthoidea Temporal range: 407.6–15.97 Ma PreꞒ Ꞓ O S D C P T J K Pg N Emsian—Early Miocene

Ctenacanthus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	†Ctenacanthiformes
Superfamily:	†Ctenacanthoidea Zangerl, 1981
Subtaxa
† † † † †Ctenacanthidae † † †^[1] †Wodnika