Tuatara 36-III
SAUROPSIDA
Sphenodontia
 
 
Tuatara (Sphenodon punctatus)
[© Ian McCutcheon CC BY-NC]



Chapter Outline
  1. Description of Sauropsida
  2. Classification of Sauropsida
  3. Sphenodontia
  4. Squamata
  5. Serpentes
  6. Testudines
  7. Crocodylia
  8. Paleo Sauropsida

Tree
NCBI Tree | Paleo Tree



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The class Lepidosauria contains two orders: Sphenodontia and Squamata. Squamata will be explored on the next two pages while this page focuses on the very small order of Tuataras, Sphenodontia.

  • Sauropsida
    • Lepidosauria
      • Sphenodontia - Tuataras
      • Squamata - Lizards and Snakes (36-IV)
        • Dibamidae
        • Xenodermidae
        • Bifurcata
          • Gekkota - Geckos
          • Unidentata
            • Scinciformata - Skinks, Spinytail Lizards, Plated Lizards
            • Episquamata
              • Laterata
              • Toxicofera
                • Anguimorpha
                • Iguania
                • Serpentes (36-V)
        • >>> Paleo Tree - Mosasaurs, etc.
    • Archelosauria
      • Testudinata
        • Testudines - Turtles (36-VI)
      • Archosauria
        • Crocodylia - Crocodiles (36-VII)
        • Dinosauria - Dinosaurs
          • Ornithischia
          • Saurischia
            • (various dinosaurs)
            • Aves - Birds (Chapter 37)
SPHENODONTIA - TUATARAS 

In the Paleobiology Database, the order Sphenodontia is not a subgroup of Lepidosauria but is within the group Rhynchocephalia.

FAMILY SPHENODONTIDAE

  • Northern Tuatara (Sphenodon punctatus) - only iNat observations in the US for Sphenodontia - New Zealand
  • Brothers Island Tuatara (Sphenodon guntheri) - San Diego Zoo, New Zealand
Resources:

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