Synapsid

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Synapsids, also known as 'mammal-like reptiles' are a group of reptiles (later mammals) that became dominant during the Permian Period. They were badly affected by the Permian extinction, leaving just a few groups left. During the Triassic, they were slowly out-competed by archosaurs, like dinosaurs. At the end of the Triassic the cynodonts, evolved into the mammals, the only living group of synaspids.

Classification

• Animal
  • Vertebrate
    • Reptile
      • Synapsid
        • Dimetrodon
        • Edaphosaurus
        • Therapsid
          • Cynodont
            • Thrinaxodon
        • Therocephalia
          • Therocephalian
        • Ammonodontid
          • Diictodon
        • Gorgonopsids
          • Lycaenops
          • Inostrancevia

Lycaenops

Gorgonopsid

Therocephalian

Diictodon