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RHYNCHOCEPHALIA: THE TUATARA AND FAMILY

In this exciting installment, we trace the ancestry of the tuatara, along with its related lines among one of two surviving lineages of leipidosaurs.

 
Rhynchocephalia | Gephyrosauridae
†Deltadectes
 
Rhynchocephalia | Gephyrosauridae
†Gephyrosaurus
 
Rhynchocephalia | Gephyrosauridae
†Penegephyrosaurus
 
Rhynchocephalia | Sphenodontia
†Diphydontosaurus
 
Rhynchocephalia | Sphenodontia
†Micromenodon
 
Rhynchocephalia | Sphenodontia
†Pelecymala
 
Rhynchocephalia | Sphenodontia
†Rebbanasaurus
 
Rhynchocephalia | Sphenodontia
†Sphenocondor
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia
†Godavarisaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia
†Planocephalosaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia
†Theretairus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Opisthiamimus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Brachyrhinodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Clevosaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Colobops
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Lanceirosphenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia
†Polysphenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia
†Lamarquesaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia
†Pamizinsaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia
†Tingitana
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia
†Whitakersaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia
†Fraserosphenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia
†Opisthias
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia
†Trullidens
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Eilenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Kaikaifilusaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Patagosphenos
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Priosphenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Opisthodontia | Eilenodontinae
†Toxolophosaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae
†Pamizinsaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae
†Zapatadon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Sphenovipera
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Cynosphenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Tika
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Sphenofontis
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Navajosphenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
†Kawasphenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Sphenodontidae | Sphenodontinae
Sphenodon punctatus
tuatara
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia
†Vadasaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia
†Ankylosphenodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia
†Homoeosaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia
†Sigmala
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Kallimodon
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Leptosaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Oenosaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Piocormus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Sapheosauridae
†Sapheosaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Pleurosauridae
†Palaeopleurosaurus
 
Rhynchocephalia | Sphenodontia | Acrosphenodontia | Eusphenodontia | Neosphenodontia | Leptorhynchia | Pleurosauridae
†Pleurosaurus
Sir Graham