Thriving also, were the early ancestors to mammals, the synapsida, which included some large reptiles such as Dimetrodon.
From the en.wikipedia.org
Thriving also, were the early ancestors to mammals, the synapsida, which included some large members such as Dimetrodon.
From the en.wikipedia.org
Synapsida, the group which contains mammals and their extinct relatives, originated during the Pennsylvanianepoch, when they split from the lineage that led to reptiles and birds.
From the en.wikipedia.org
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Extinct reptiles of the Permian to Jurassic considered ancestral to mammals
Synapsids ('fused arch') are a group of animals that includes mammals and everything more closely related to mammals than to other living amniotes. ...