Kingdom: Animalia Phylum: Chordata Class: Reptilia
The Class Reptilia is not a monophyletic group. In fact, when looking a cladogram of evolutionary relationships between members of this class it is clear that birds should, in all practical cases be included in this taxa.
Cite this Page: , A. 2008. "Reptiles"
(OnLine) UntamedScience. Accessed Mar 11, 2010 at http://www.untamedscience.com/biodiversity/animals/chordates/reptiles