What is "millerosauria"

Millerosauria is an order of Parareptiles that contains the families † Millerettidae and † Eunotosauridae. It is the sister group to the order Procolophonomorpha. It was named in 1957 by Watson. It was once considered a suborder of the disused group Captorhinida and was called Millerosauroidea. All members of this order are thought to be extinct.