Genus
|
Authors
|
Year
|
Status
|
Age
|
Location
|
Notes
|
Aerosaurus
|
Romer
|
1937
|
Valid.
|
Late Carboniferous
[1] - Lower Permian
[2]
|
United States of America
[2]
|
|
Angelosaurus
|
Olson
Beerbower
|
1953
|
Valid.
|
Upper Permian
[3]
|
United States of America
[3]
|
|
Anglosaurus
|
Bruner
|
1991
|
Sic
|
N/A
|
N/A
|
Incorrect spelling for Angelosaurus
[4]
|
Apsisaurus
|
Laurin
|
1991
|
Valid.
|
Lower Permian
[5]
|
United States of America
[5]
|
Formerly assigned as a "eosuchian" diapsid.
[6]
|
Archaeobelus
|
Cope
|
1877
|
Syn.
|
N/A
|
N/A
|
Synonym of Clepsydrops
[4]
|
Archaeothyris
|
Reisz
|
1972
|
Valid.
|
Upper Carboniferous
[1]
|
United States of America
[1]
|
|
Archaeovenator
|
Reisz
Dilkes
|
2003
|
Valid.
|
Upper Carboniferous
[7]
|
United States of America
[7]
|
|
Arribasaurus
|
Williston
|
1914
|
Syn.
|
N/A
|
N/A
|
Synonym of Ophiacodon
[8]
|
Baldwinonus
|
Romer
Price
|
1940
|
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.
|
N/A
|
N/A
|
Synonym of Dimetrodon
[8]
|
Bathygnathus
|
Leidy
|
1854
|
Valid.
|
Lower Permian
[4]
|
United States of America
[4]
|
|
Brachycnemius
|
Williston
|
1911
|
Syn.
|
N/A
|
N/A
|
Synonym of Edaphosaurus
[4]
[8]
|
Callibrachion
|
Boule
Glangeau
|
1893
|
Syn.
|
N/A
|
N/A
|
Synonym of Haptodus
[8]
|
Casea
|
Williston
|
1910
|
Valid.
|
Lower Permian
[1]
|
France and United States of America
[1]
|
|
Caseoides
|
Olson
Beerbower
|
1953
|
Valid.
|
Lower Permian
[11]
|
United States of America
[11]
|
|
Caseopsis
|
Olson
|
1962
|
Valid.
|
Upper Permian
[12]
|
United States of America
[12]
|
|
Clepsydrops
|
Cope
|
1875
|
Valid.
|
Late Carboniferous
[4]
|
United States of America
[4]
|
|
Colobomycter
|
Vaughn
|
1958
|
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.
|
Late Carboniferous
[14]
|
Germany
[14]
|
Ctenorhachis
|
Hook
Hotton
|
1991
|
Valid.
|
Upper Permian
[15]
|
United States of America
[15]
|
|
Ctenospondylus
|
Romer
|
1936
|
Valid.
|
Lower Permian
[11]
|
United States
[11]
|
|
Cutleria
|
Lewis
Vaughn
|
1965
|
Valid.
|
Early Permian
[16]
|
United States of America
[16]
|
|
Delorhynchus
|
Fox
|
1962
|
Valid.
|
Lower Permian
[9]
|
United States of America
[9]
|
Originally descript as a pelycosaur, but probably a parareptile
[17]
|
Datheosaurus
|
Schroeder
|
1905
|
Syn.
|
N/A
|
N/A
|
Synonym of Haptodus
[8]
|
Dimacrodon
|
Olson
Beerbower
|
1953
|
Valid?
|
Lower Permian
[18]
|
United States
[18]
|
Originally descript as an anomodont therapsid by Olson & Beerbower (1953) and Olson (1962), it lacks any diagnostic features of anomodonts and rather represent pelycosaur-grade synapsids
[18]
|
Dimetrodon
|
Cope
|
1878
|
Valid.
|
Early Permian
[19] -
Middle Permian
|
United States of America
[19] and Germany
[20]
|
|
Diopaeus
|
Cope
|
1892
|
Syn.
|
N/A
|
N/A
|
Synonym of Ophiacodon
[8]
|
Echinerpeton
|
Reisz
|
1972
|
Valid.
|
Upper Carboniferous
[21]
|
Canada
[21]
|
|
Edaphosaurus
|
Cope
|
1882
|
Valid.
|
Late Carboniferous
[19] - Lower Permian
[22]
|
Czech Republic
[19] and United States of America
[22]
|
|
Elcabrosaurus
|
Case
|
1907
|
Syn.
|
N/A
|
N/A
|
Synonym of Sphenacodon
[23]
|
Elliotsmithia
|
Broom
|
1937
|
Valid.
|
Middle-Upper Permian
[24]
|
South Africa
[24]
|
|
Embolophorus
|
Cope
|
1878
|
Syn.
|
N/A
|
N/A
|
Synonym of Dimetrodon
[8]
|
Ennatosaurus
|
Efremov
|
1956
|
Valid.
|
Lower Permian
[25]
|
Russia
[25]
|
|
Eothyris
|
Romer
|
1937
|
Valid.
|
Lower Permian
[2]
|
United States of America
[2]
|
|
Eumatthevia
|
Broom
|
1930
|
Syn.
|
N/A
|
N/A
|
Synonym of Mycterosaurus
[8]
|
Euromycter
|
Reisz
Maddin
Fröbisch
Falconnet
|
2011
|
Valid.
|
Early-Late Permian
[26]
|
France
[26]
|
|
Glaucosaurus
|
Williston
|
1915
|
Valid.
|
Lower Permian
[27]
|
United States of America
[27]
|
|
Haptodus
|
Gaudry
|
1866
|
Valid.
|
Late Carboniferous
[1] - Lower Permian
[28]
|
United States of America
[1] and Europe
[28]
|
|
Heleosaurus
|
Broom
|
1907
|
Valid.
|
Upper Permian
[29]
|
South Africa
[29]
|
|
Ianthasaurus
|
Reisz
Berman
|
1986
|
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
|
N/A
|
N/A
|
Incorrect spelling of Ianthasaurus
|
Lupeosaurus
|
Romer
|
1937
|
Valid.
|
Lower Permian
[2]
|
United States of America
[2]
|
|
Macromerion
|
Fritsch
|
1879
|
Valid.
|
Upper Carboniferous
[31]
|
Germany
[31]
|
|
Mesenosaurus
|
Efremov
|
1938
|
Valid.
|
Lower Permian
[25]
|
Russia
[25]
|
|
Mesonosaurus
|
Ivakhnenko
Kurzanov
|
1979
|
Sic
|
N/A
|
N/A
|
Incorrect spelling of Mesenosaurus
|
Milosaurus
|
DeMar
|
1970
|
Valid.
|
Upper Carboniferous
[4]
|
United States of America
[4]
|
|
Mycterosaurus
|
Williston
|
1915
|
Valid.
|
Lower Permian
[1]
|
United States of America
[1]
|
|
Naosaurus
|
Cope
|
1886
|
Syn.
|
N/A
|
N/A
|
Synonym of Edaphosaurus
[22]
|
Neosaurus
|
Nopsca
|
1923
|
Valid.
|
Lower Permian
[31]
|
France
[31]
|
|
Nitosaurus
|
Romer
|
1937
|
Valid.
|
Lower Permian
[2]
|
United States of America
[2]
|
|
Oedaleops
|
Langston
|
1965
|
Valid.
|
Lower Permian
[9]
|
United States of America
[9]
|
|
Ophiacodon
|
Marsh
|
1878
|
Valid.
|
Late Carboniferous-Lower Permian
[1]
|
United States of America
[1] and England
[31]
|
|
Oromycter
|
Reisz
|
2005
|
Valid.
|
Lower Permian
[32]
|
United States of America
[32]
|
|
Oxyodon
|
Huene
|
1908
|
Preocc.
|
N/A
|
N/A
|
Preoccupied by fish genus
Oxyodon Brauer, 1906. Synonym of Sphenacodon
[8]
|
Palaeohatteria
|
Credner
|
1888
|
Valid.
|
Early Permian
[33]
|
Germany
[33]
|
|
Palaeosphenodon
|
Baur
|
1889
|
Syn.
|
N/A
|
N/A
|
Synonym of Palaeohatteria
|
Pantelosaurus
|
von Huene
|
1925
|
Valid.
|
Early Permian
[34]
|
Germany
[34]
|
|
Phreatophasma
|
Efremov
|
1954
|
Valid.
|
Middle Permian
[25]
|
Russia
[25]
|
|
Poecilospondylus
|
Case
|
1910
|
Syn.
|
N/A
|
N/A
|
Synonym of Varanosaurus
[35]
|
Poliosaurus
|
Case
|
1907
|
Syn.
|
N/A
|
N/A
|
Synonym of Ophiacodon
[8]
|
Protoclepsydrops
|
Carroll
|
1964
|
Valid.
|
Upper Carboniferous
[21]
|
Canada
[21]
|
|
Pyozia
|
Anderson
Reisz
|
2004
|
Valid.
|
Middle Permian
[36]
|
Russia
[36]
|
|
Ruthenosaurus
|
Reisz
Maddin
Fröbisch
Falconnet
|
2011
|
Valid.
|
Early-Late Permian
[26]
|
France
[26]
|
|
Ruthiromia
|
Eberth
Brinkman
|
1983
|
Valid.
|
Lower Permian
[37]
|
United States of America
[37]
|
|
Scoliomus
|
Williston
Case
|
1915
|
Syn.
|
Lower Permian
[38]
|
United States of America
[38]
|
Junior synonym of Sphenacodon
[38]
|
Secodontosaurus
|
Romer
|
1936
|
Valid.
|
Lower Permian
[4]
|
United States of America
[4]
|
|
Sphenacodon
|
Marsh
|
1878
|
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.
|
Late Carboniferous
[1]
|
France
[1]
|
|
Theropleura
|
Cope
|
1878
|
Syn.
|
N/A
|
N/A
|
Synonym of Ophiacodon (in partium) and Dimetrodon (in partium)
[8]
|
Therosaurus
|
von Huene
|
1925
|
Syn.
|
N/A
|
N/A
|
Synonym of Ophiacodon
[8]
|
Thrausmosaurus
|
Fox
|
1962
|
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
[4]
|
United States of America
[4]
|
Replacement name for Trispondylus Williston, 1910
|
Trispondylus
|
Williston
|
1910
|
Preocc.
|
N/A
|
N/A
|
Preoccupied by phenacodontid
Trispondylus Cope, 1884
|
Varanodon
|
Olson
|
1965
|
Valid.
|
Lower Permian
[11]
|
United States of America
[11]
|
|
Varanops
|
Williston
|
1911
|
Valid.
|
Lower Permian
[1]
|
United States of America
[1]
|
|
Varanosaurus
|
Broili
|
1904
|
Valid.
|
Lower Permian
[1]
|
United States of America
[1]
|
|
Xyrospondylus
|
Reisz
Heaton
Pynn
|
1982
|
Valid.
|
Upper Carboniferous
[8]
|
United States of America
[8]
|
|
Watongia
|
Olson
|
1974
|
Valid.
|
Middle Permian
[39]
|
United States of America
[39]
|
|
Winfeldia
|
Romer
|
1925
|
Syn.
|
N/A
|
N/A
|
Synonym of Ophiacodon
[8]
|