>probably the most successful family of land vertebrates ever>no living descendantsWhy?
>>5066884>Why?Are we not related to this creature? Isn't it a synapsid?
>>5066903>Are we not related to this creature? Isn't it a synapsid?Related yes, but we and all mammals for that matter, don't descend from them, Lystros are dicynodonts, and we descend from cynodonts.