Jawed Fish Fish Chordata Bilateria Animals Life Existence
Acanthodii Extinct, ancestral shark relatives known as 'Spiny Sharks' due to the dentine spines that reinforced their fins.
(Taxonomic Rank: Class)

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	Acanthodes   Order: Acanthodiformes Acanthodopsis   Order: Acanthodiformes Cheiracanthus   Order: Acanthodiformes Climatius   Order: Climatiiformes Culmacanthus   Order: Climatiiformes Diplacanthus   Order: Climatiiformes Euthacanthus   Order: Climatiiformes Gyracanthus   Order: Climatiiformes Ischnacanthus   Order: Ischnacanthiformes Mesacanthus   Order: Acanthodiformes
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