Palaeos		Sphenodontia
Vertebrates		Dendrogram

Sphenodontia: Dendrogram

LEPIDOSAUROMORPHA
|--SQUAMATA
`--o Rhynchocephalia
   |--Gephyrosaurus 
   `--Sphenodontidae
      |--Clevosaurinae
      `--Stem Group Sphenodontinae 
         |--Pleurosauridae 
         `--+--Sphenodontinae 
            `--+--Sphenodontini
               `--Eilenodontini

EUREPTILIA
|--ARCHOSAUROMORPHA
`--LEPIDOSAUROMORPHA VPP, DC, ToL
   |--Sauropterygia X (placodonts + plesiosaurs) DC, MH
   `--Lepidosauria
      |--Rhynchocephalia MH
      |  |-- Gephyrosaurus
      |  `--o Sphenodontia
      |     |-- Diphydontosaurus
      |     `--+-- Planocephalosaurus
      |        `--o Sphenodontidae
      |           |--o Clevosaurinae
      |           |  |--Polysphenodon
      |           |  `--+--Brachyrhinodon
      |           |     `-- Clevosaurus
      |           `--o Stem Group Sphenodontinae
      |              |--Homoeosaurus
      |              |--o Pleurosauridae
      |              |   |--Palaeopleurosaurus
      |              |   `--Pleurosaurus
      |              `--+--o Sapheosaurini
      |                 |   |--Kallimodon
      |                 |   `--Sapheosaurus
      |                 `--o Sphenodontinae
      |                    |--o Sphenodontini
      |                    |  |--Cynosphenodon
      |                    |  `--Sphenodon (tuatara)
      |                    `--o Opisthodontia
      |                       |-- Opisthias
      |                       `--o Eilenodontini
      |                          |--Ankylosphenodon
      |                          |--Toxolophosaurus
      |                          `--+--Priosphenodon
      |                             `--Eilenodon
      `--SQUAMATA

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