Threatened species of Rhynchocephalia

The sole survivors of the Order Rhynchocephalia are the Tuataras of New Zealand.

1. Threatened species of Lepidosauria

1. Threatened species of Sphenodontidae
2. Extinct species of Sapheosauridae
3. Extinct species of Rhynchosauridae
4. Extinct species of Pleurosauridae
5. Extinct species of Claraziidae