Eric Walker added Elpistostegalia - Wikipedia to Elpistostegalia

Eric Walker added Stegocephalia and Elpistostegalia - Wikipedia to Elpistostegalia, and added Elpistostegalia to Eotetrapodiformes

Eric Walker added Tetrapoda and Tiktaalik and Stegocephalia - Wikipedia to Stegocephalia, and added Stegocephalia to Elpistostegalia

Eric Walker added Elpistostegalia and Eotetrapodiformes - Wikipedia to Eotetrapodiformes, and added Eotetrapodiformes to Chordata