..., Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA; KUVP, University of Kansas Museum of Natural History, Lawrence, Kansas, USA; ROM, Royal Ontario Museum, Toronto, Ontario, Canada. Synapsida Osborn, 1903 Eupelycosauria Kemp, 1982 Edaphosauridae Cope, 1882 Ianthasaurus...

..., septomaxilla; so, supraoccipital; sp, splenial; sq, squamosal; st, supratemporal; t, tabular; v, vomer. Scale bar = 1 cm. HOLOTYPE AND ONLY KNOWN SPECIES: Archaeovenator hamiltonensis , sp.nov. Synapsida Osborn, 1903 Eupelycosauria Kemp, 1982 Varanopidae Romer and Price, 1940...

... Eupelycosauria Kemp, 1982 Varanopidae Romer and Price, 1940 Varanodontinae Reisz and Berman, 2001 Watongia meieri Olson, 1974 HOLOTYPE : UCMP 143278, formerly UCLA VP 3132, skull fragments, incomplete forelimbs, and shoulder girdle, and a few vertebrae, gastralia, and ribs (Figs.  1–5...

... Survey, University of Kansas, 6, pp.  189 – 194 . Reisz R.R. Berman D.S. 2001 . The skull of Mesenosaurus romeri a small varanopseid (Synapsida: Eupelycosauria) from the Upper Permian of the Mezen River basin, northern Russia . Annals of Carnegie Museum , 70 : 113 – 132 . Reisz...

.... 2004 . Pyozia mesenensis , a new, small varanopid (Synapsida, Eupelycosauria) from Russia: “Pelycosaur” diversity in the Middle Permian . Journal of Vertebrate Paleontology 24 : 173 – 179...

... trends . Belhaven , London . Berman , D. S. , R. R. Reisz , J. R. Bolt , and D. Scott . 1995 . The cranial anatomy and relationships of the synapsid Varanosaurus (Eupelycosauria: Ophiacodontidae) from the Early Permian of Texas and Oklahoma. Annals of the Carnegie Museum...

... poorly defined, and the material described here is only sufficient to merit referral to Diadectes sp.; the same assignment was utilized in the histological sampling of this material by LeBlanc and Reisz ( 2013 ). Class Synapsida Osborn, 1903 Clade Eupelycosauria Kemp, 1982 Family Varanopidae...

... of the Mesen River Basin, northern Russia . Annals of Carnegie Museum , 70 : 113 – 132 . Reisz , R. R. , D. Dilkes , and D. Berman . 1998 . Anatomy and relationships of Elliotsmithia longiceps Broom, a small synapsid (Eupelycosauria: Varanopseidae) from the Late Permian of South Africa...

...: Eupelycosauria) from the Richards Spur locality, Oklahoma : Journal of Vertebrate Paleontology , v. 26 , p. 957 – 966 , doi: 10.1671/0272-4634(2006)26[957:AEPVVS]2.0.CO;2 . Richards D.A. Bottrell S.H. Cliff R.A. Strohle K. Rowe P.J. , 1998 , U-Pb dating of a speleothem...

.... , Dilkes , W.D. , and Berman , D.S. , 1998 , Anatomy and relationships of Elliotsmithia longiceps Broom, a small synapsid (Eupelycosauria: Varanopseidae) from the Late Permian of South Africa : Journal of Vertebrate Paleontology , 18 . 602 – 611 . Ricqlès , A.d. , and Taquet , P...

... of Mesenosaurus romeri, a small varanopseid (Synapsida: Eupelycosauria) from the Upper Permian of the Mesen River Basin, northern Russia . Annals of the Carnegie Museum , 70 : 113 – 132 . Romer , A. S. , and L. I. Price . 1940 . Review of the Pelycosauria . Geological Society of America Special...

... that the cheek teeth of Diasparactus resemble more closely those of Diadectes than those of Desmatodon . Thus, based on dental morphology, Diasparactus and Desmatodon should be maintained as separate taxa. Eupelycosauria Kemp, 1982 Ophiacodontidae Nopsca, 1923 Genus Ophiacodon...

... the closely related genus Secodontosaurus , in which the cross-sectional outline is subcircular, but retains the fore and aft longitudinal grooves. Amniota Synapsida Osborn 1903 Eupelycosauria Kemp 1982 Family Sphenacodontidae Williston 1912 Genus Dimetrodon Cope 1878 Dimetrodon...

... replicates, and a decay analysis was performed in PAUP v4.0 ( Swofford 2002 ) for both matrices. Amniota Synapsida Osborn, 1903 Eupelycosauria Kemp, 1982 Family Sphenacodontidae Williston, 1912 Genus Bathygnathus Leidy, 1853 Bathygnathus borealis Leidy, 1853 Figs. 2–5...

... Borealosuchus Brochu       Borealosuchus griffithi Wu et al., 2001  Unranked clade Eupelycosauria Kemp   Family Varanopidae Romer and Price    Genus Thrausmosaurus Fox, 1962      Thrausmosaurus serratidens b Fox, 1962  Order Therapsida Broom   Suborder Cynodontia Owen...

.... , Voigt , S. , and Fischer , J. , 2020 , Edaphosauridae (Synapsida, Eupelycosauria) from Europe and their relationship to North American representatives : PalZ , v. 94 , p. 125 – 153 . Stapf , K.R.G...

... of Mesenosaurus romeri, a small varanopseid (Synapsida, Eupelycosauria) from the Upper Permian of the Mesen River Basin, northern Russia . Annals of the Carnegie Museum , 70 , 1 – 20 . Reisz , R.R. , Dilkes , D.W. and Berman , D.S. ( 1998 ). Anatomy and relationships of Elliotsmithia...

.... , R. R. Reisz , J. R. Bolt , and D. Scott . 1995 . The cranial anatomy and relationships of the synapsid Varanosaurus (Eupelycosauria: Ophiacodontidae) from the Early Permian of Texas and Oklahoma . Annals of Carnegie Museum , 64 : 99 - 133 . Boy , J. , and K. Bandel...

... Eupelycosauria Kemp, 1982 Twenty rhomboid scales. Figured specimen (USNM 542539), other material (USNM 542555) Rhomboid scales with distinct concentric growth lines. The scales, where complete, are ≤3 mm along the diagonal long axis and are lacking any kind of superficial covering...