Reptiles Vertebrates Animals Existence

Basal Reptiles (Taxonomic Rank: Group)

Extinct ancestorial proto-reptiles including, but not limited to, the Mesosauria, Younginiformes, Varanopidae, Caseidae, Edaphosauridae, Sphenacodontidae, Cynognathidae, and Dinocephalia.

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	Dimetrodon

= Extinct Life Forms   = Living Creatures   = Fictional Beasts   = Inanimate Objects   = Ethereal Entities   = At least one collectible is catalogued