Eric Walker added Sphenacomorpha to Haptodontiformes, and added Haptodontiformes to Eupelycosauria

Eric Walker added Haptodontiformes to Eupelycosauria, and added Eupelycosauria to Synapsids

Eric Walker added Eupelycosauria and Synapsid - Wikipedia to Synapsids, and added Synapsids to Amniota