Cladoselachiformes Fossil range: Devonian-Permian
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Cladoselachimorpha
Order:	Cladoselachiformes
Families & Genera
Cladoselachidae Cladolepis Deirolepis Ohiolepis Pristicladodus Cladodus Cladoselache

Cladoselachiformes is an extinct order of primitive sharks. They were characterized by having an elongated body with a spine in each of the two dorsal fins.

[edit] References

• Cladoselachiformes, Dictionary of Zoology (1999).
• Evolution and paleontology ( fish ). Animal Aqua.

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