Sphenodontia

Sphenodontia
Taxonomia
Regnum: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Tetrapoda
Superclassis: Amniota
Classis: Reptilia
Subclassis: Diapsida
Superordo: Lepidosauria
Classis: Sphenodontia
Williston, 1925
Familiae

Sphenodontia sive Rhynchocephalia (Guntherus, 1867) sunt Reptilium ordo antiquissimus (a Triassico extans), qui hodie duabus tantum speciebus (Sphenodonte guntheri et Sphenodonte punctato) constat.


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