Gephyrosaurus is a genus of early rhynchocephalian first described and named in 1980 by Susan E. Evans.
They are distantly related to the extant Sphenodon with which they shared a number of skeletal features including a large tooth row along the side of the palatine bone and posterior process of the dentary bone. The type species, G. bridensis, lived during Early Jurassic in Wales, UK.
Whiteside & Duffin (2017) described the second species, G. evansae, known from a partial maxilla recovered from Late Triassic (Rhaetian) fissure fills in Carboniferous Limestone in Somerset.
The primitive cranial features of this organism places it within the order of Eosuchia.
Explore contextually related video stories in a new eye-catching way. Try Combster now!