The Tree of Life page that Henry J linked to re-classifies Mesosauridae within Anapsida, thus removing the need for Sauropsida.    From Wordnik.com.  [Down with phyla! (episode II) - The Panda's Thumb] Reference

(Btw, Lenny (I think?) let me know that turtles and their relatives should also be put in the Diapsida branch rather than the Anapsida.).    From Wordnik.com.  [Drawing a Line in the Academic Sand - The Panda's Thumb] Reference

Subclass Anapsida.    From Wordnik.com.  [CreationWiki - Recent changes [en]]