One level back to Vertebrates (red blood, new mouths) 2.3.3.3.1.2.3.1. Fish (spawning) 2.3.3.3.1.2.3.1.1. [Armored fishes] (extinct) 2.3.3.3.1.2.3.1.2. [Bony Fish] 2.3.3.3.1.2.3.1.3. [Cartilaginous Fish] [Sharks, Rays] One level further to [Armored fishes] (extinct) One level further to [Bony Fish] One level further to [Cartilaginous Fish] [Sharks, Rays]

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Fish (spawning)