Phylogenetic relationships of Oenosaurus muehlheimensis within rhynchocephalians.

Cladistic analysis of 70 osteological characters in 19 rhynchocephalian and two outgroup taxa resulted in the recovery of 2 trees with 184 steps (see Information S1). A strict consensus tree shows Oenosaurus well nested within sphenodontine rhynchocephalians, as a close relative to the Recent Sphenodon. 1, Rhynchocephalia; 2, Sphenodontinae.