Before revision: During their life cycle, all anamniote classes pass through a completely aquatic egg stage and a larval stage morphologically resembling a small finless fish (known as a fry or a tadpole for fish and amphibians, respectively ), thus indicating their close physiological relationship.
After revision: During their life cycle, all anamniote classes pass through a completely aquatic egg stage , as well as an aquatic larval stage during which all hatchlings morphologically resemble tiny), before reaching adult forms (which might be aquatic or semiaquatic finless fish (known as a fry or a tadpole for fish and amphibians, respectively ), thus indicating their close physiological relationship.