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Ray-finned fish
Temporal range: Upper Silurian – Recent
Atlantic herring
Scientific classification
Kingdom:
Phylum:
Infraphylum:
Superclass:
Class:
Actinopterygii

Klein, 1885
Subclasses

Chondrostei
Neopterygii

The Actinopterygii is the class of ray-finned fishes.

The ray-finned fishes get their name from the fact that they have lepidotrichia or "fin rays". Their fins are webs of skin held by bony or horny spines ("rays"). This is different from the fleshy fins of the fish in the Sarcopterygiiview more...