... specimens of Owenetta where it may represent a reversal. In any case, the derived state where the caniniform region is lost represents a synapomorphy of Procolophonia sensu Laurin and Reisz ( 1995 ). Maxilla quadratojugal contact — Contact between the maxilla and the quadratojugal (0) is primitive...

... version of the data matrix in Müller and Tsuji (2007) . No polytomies are shown because the disagreements among the source trees concern only the interrelationships of nycteroleterids (subsumed here in Procolophonia). Tree length = 400, consistency index = 0.43, rescaled consistency index = 0.30. We...

... of Procolophonoidea. Presence of a fused astragalocalcaneum indicates that the material belongs to the Procolophonia, a clade that includes procolophonoids, pareiasaurs, and possibly chelonians ( Laurin and Reisz 1995 ; Lee 1997 ; deBraga and Rieppel 1997 ). Most authors agree that this clade (or the more...

... in the late Permian and survived the Permian–Triassic extinction. Although based on isolated limb bones, they highlight the taxonomic diversity of the still poorly known tetrapod assemblage of the lower Keuper in southwestern Germany. Suborder Procolophonia Seeley, 1888 Superfamily Procolophonoidea...

... and the origin of turtles : Nature , 349 . 324 – 326 . Reisz , R.R. , and Scott , D. , 2002 , Owenetta kitchingorum , sp. nov., a small parareptile (Procolophonia: Owenettidae) from the Lower Triassic of South Africa : Journal of Vertebrate Paleontology , 22 . 244 – 256 . Rubidge...

... 05, France; [email protected] . The group of early tetrapods often known as “parareptiles” has long posed a difficult taxonomic and phylogenetic problem. Olson (1947) , who erected the taxon Parareptilia, placed in it Seymouriamorpha, Diadectomorpha, Procolophonia, Pareiasauria...

... an investigation of the phylogenetic position of Bolosauridae within Amniota [ Berman et al. , 2000 ; Reisz et al. , 2007 ] resulting in a phylogenetic position close to Procolophonia within Parareptilia. More recently, Müller et al. [2008 ] attempted for the first time to understand Bolosauridae...

... : Journal of Systematic Paleontology , v. 2 , p. 153 – 157 . Reisz R.R. , and Laurin M. , 1991 , Owenetta and the origin of turtles : Nature , v. 349 , p. 324 – 326 . Reisz R.R. , and Scott D. , 2002 , Owenetta kitchingorum , sp. nov., a small parareptile (Procolophonia...

... naturwissenschaftliches Archiv , v. 55 , p. 37 – 49 . Reisz , R.R. , and Laurin , M. , 1991 , Owenetta and the origin of turtles : Nature , v. 349 , p. 324 – 326 . Reisz , R.R. , and Scott , D. , 2002 , Owenetta kitchingorum , sp. nov., a small parareptile (Procolophonia: Owenettidae...

.... and Scott , D. ( 2002 ). Owenetta kitchingorum, sp. nov., a small parareptile (Procolophonia: Owenettidae) from the Lower Triassic of South Africa . Journal of Vertebrate Paleontology , 22 , 244 – 256 . Renaut , A.J. ( 2001a ). A re-evaluation of the cranial morphology and taxonomy...