Category Nuances matching tetrapod:

• amphibious,
• herbivorous,
• aquatic,
• terrestrial,
• modern,
• poikilothermic,

Members for simple category tetrapod:

• turtle,
• perissodactyl,
• frog,
• bird,
• reptile,
• freshwater_turtle,
• dolphin,
• crocodilian,
• elephant,
• ungulate,
• mammal,
• whale,
• crocodile,
• newt,
• artiodactyl,
• lizard,
• porpoise,
• amphibian,