List of pelycosaurs

Late Carboniferous[1] - Lower Permian[2] United States of America[2] Angelosaurus Olson Beerbower 1953 Valid.

Upper Carboniferous[1] United States of America[1] Archaeovenator Reisz Dilkes 2003 Valid.

Late Carboniferous[1] - Early Permian[9] United States of America[9] Basicranodon Vaughn 1958 Syn.

Lower Permian[1] United States of America[1] Synonym of Mycterosaurus[10] Bathyglyptus Case 1911 Syn.

Lower Permian[1] France and United States of America[1] Caseoides Olson Beerbower 1953 Valid.

Lower Permian[4] United States of America[4] It is a protorothyridid eureptile[13] Cotylorhynchus Stovall 1937 Valid.

Lower Permian[1] United States of America[1] Cryptovenator Fröbisch Schoch Müller Schindler Schweiss 2011 Valid.

Lower Permian[9] United States of America[9] Originally descript as a pelycosaur, but probably a parareptile[17] Datheosaurus Schroeder 1905 Syn.

Late Carboniferous[19] - Lower Permian[22] Czech Republic [19] and United States of America[22] Elcabrosaurus Case 1907 Syn.

Late Carboniferous[1] - Lower Permian[28] United States of America[1] and Europe[28] Heleosaurus Broom 1907 Valid.

Late Carboniferous[22] United States of America[22] Ianthodon Kissel Reisz 2004 Valid.

Upper Carboniferous[30] United States of America[30] Ianthosaurus Reisz Berman 1986 Sic

Late Carboniferous-Lower Permian[1] United States of America[1] and England[31] Oromycter Reisz 2005 Valid.

Lower Permian[38] United States of America[38] Junior synonym of Sphenacodon[38] Secodontosaurus Romer 1936 Valid.

Late Carboniferous[1]-Early Permian United States of America[1] and England[31] Stereophallodon Romer 1937 Valid.

Late Carboniferous[9]-Early Permian[2] United States of America[2] Stereorhachis Gaudry 1880 Valid.

Lower Permian[17] United States of America[17] The type species, T. serratidens, was declared to be a nomen dubium[17] Trichasaurus Williston 1913 Valid.

Lower Permian[1] United States of America[1] Xyrospondylus Reisz Heaton Pynn 1982 Valid.