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