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Archegosaurus is a genus of amphibian which lived during the Asselian to Wuchiapingian ages of the Permian, around 299-253 million years ago.

Archegosaurus Head

Archegosaurus is a genus of amphibian which lived during the Asselian to Wuchiapingian ages of the Permian,…

Archegosaurus is a genus of amphibian which lived during the Asselian to Wuchiapingian ages of the Permian, around 299-253 million years ago. Pictured here is the dorsal vertebrae.

Dorsal Vertebrae of the Archegosaurus

Archegosaurus is a genus of amphibian which lived during the Asselian to Wuchiapingian ages of the Permian,…

This illustration shows a section of a tooth of a typical Labyrinthodont. Labyrinthodont, or Stegocephali is a race of extinct amphibians, the remains of which are found in the Permian, Carboniferous, and Triassic strata. Many of them were giants compared with our modern amphibians, from which they differed markedly in possessing an armature of bony plates in various degrees of completeness. In general habit, they resembled the newt or salamander. The name Labyrinthodont refers to the mazy pattern exhibited on a transverse section of the teeth of some genera. Among the best known genera are Archegosaurus, Loxomma, and Mastodonsaurus.

Section of Tooth of Typical Labyrinthodont

This illustration shows a section of a tooth of a typical Labyrinthodont. Labyrinthodont, or Stegocephali…