taxonomy

Tuatara taxonomy and evolution

English

http://www.ccpictures.org/var/resizes/Recreation/Animals/Reptiles/Tuatara_cladogram.png?m=1304873904Cladogram showing relationships of extant members of the Sauria. Numbered items are:
1. Tuatara
2. Lizards
3. Snakes
4. Crocodiles
5. Birds
"Lizards" are paraphyletic. Branch lengths do not indicate divergence times.

Extant Lacertilia families

English

http://www.ccpictures.org/var/resizes/Animals/Reptiles/Lizards/Anguidae.jpg?m=1301100451This is a list of the extant Lacertilia families. Larcertilia is the suborder of reptiles commonly known as lizards.

Vipers

Cartilaginous fishes

English
Cartilaginous fishes
 
Fossil range: Early Silurian - Recent
White shark

Gnathostomata

English
Gnathostomata
 
Fossil range: Late Ordovician - Recent

Sauropterygia

English
Sauropterygians
 
Fossil range: Late Permian - Late Cretaceous
Plesiosaur
 

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