Kingdom Animalia Subclass Elasmobranchii Higher classification Cladoselachiformes | Phylum Chordata Order Cladoselachiformes Rank Family | |
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Similar Xenacanthida, Symmoriida, Cladoselache, Eugeneodontida, Hybodontiformes | ||
Cladoselachidae is an extinct family of cartilaginous fishes and among the earliest predecessors of modern sharks. They are the only members of the order Cladoselachiformes and were characterized by having an elongated body with a spine in each of the two dorsal fins.
References
Cladoselachidae Wikipedia(Text) CC BY-SA