EUROPEAN RUSSIA

ARKHANGELSK REGION

MEZENSKII DISTRICT

GLYADNAYA SHCHEL’YA LOCALITY

KRASNOSHCHEL’YA FORMATION

URZHUMIAN HORIZON

MEZEN FAUNAL ASSEMBLAGE

LOWER TATARIAN AGE

CAPITANIAN STAGE

MIDDLE ZECHSTEIN EPOCH

LATE MIDDLE PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

NEOTETRAPODA

SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934

ORDER: SEYMOURIAMORPHA WATSON, 1917

SUBORDER: NYCTEROLETERIDAE TATARINOV, 1972

Family: NYCTEROLETERIDAE Romer, 1956

Subfamily: NYCTEROLECTERINAE Romer, 1956

Macroleter poezicus

Subfamily: BASHKYROLETERINAE Ivachnenko, 1997

*Bashkyroleter mesensis

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: PARAREPTILIA OLSON 1947

INFRACLASS: SAUROPSIDA HUXLEY, 1864

ORDER: PROCOLOPHONOMORPHA ROMER, 1964

SUBORDER: PROCOLPHOMORPHA SEELEY, 1888

Family: NYCTIPHRURETIDAE Efremov, 1938

*Nyctiphruretus acudens

SUBCLASS: DIAPSIDA OSBORN, 1904

Incertae sedis

*Lanthanolania ivakhenennkoi

SUBCLASS: SYNAPSIDA OSBORN, 1903

ORDER: PELYCOSAURIA COPE, 1878

SUBORDER: EUPELYCOSAURIA KEMP, 1982

INFRAORDER: OPHIACHODONTIA NOVA

Family: VARANOPSEIDAE Romer & Price, 1940

Subfamily: MYCTEROSAURINAE Reisz & Berman, 2001

Mesenosaurus romeri

SUPERORDER: THERASPIDA BROOM, 1905

ORDER: EOTHERIODONTIA OLSON, 1962

Incertae sedis

Family: NIKKASAURIDAE Ivakhnenko, 2000

*Nikkasaurus tatarinovi

*Reiszia gubini

INFRAORDER: EOTITANOSUCHIA BOONSTRA, 1963

Family: NIIAFTASUCHIDAE Ivakhenko, 1990

Niaftasuchus zekkeli

Family: ALRAUSUCHIDAE Ivakhenko, 2008

Alrausuchus tagax

_____________________________________________________________________________________

EUROPEAN RUSSIA

ARKHANGELSK REGION

MEZENSKII DISTRICT

UST’-PEZA LOCALITY

UPPER KAZANIAN SUBSTAGE OR

LOWER TATARIAN AGE

LOPINGIAN SUBEPOCH

UPPER ZECHSTEIN EPOCH

LATE PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

SUPERORDER: THERASPIDA BROOM, 1905

ORDER: EOTHERIODONTIA OLSON, 1962

SUBORDER: EOTITANOSUCHIA BOONSTRA, 1963

INFRAORDER: EOTITANOSUCHIA BOONSTRA, 1963

Family: EOTITANOSUCHIDAE CHUDINOV, 1960

Biarmosuchus tagax

_____________________________________________________________________________________

EUROPEAN RUSSIA

ARKHANGELSK REGION

MEZENSKII DISTRICT

UST’-VASHKA LOCALITY

UPPER KAZANIAN SUBSTAGE OR

LOWER TATARIAN AGE

LOPINGIAN SUBEPOCH

UPPER ZECHSTEIN EPOCH

LATE PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

SUPERORDER: THERASPIDA BROOM, 1905

ORDER: EOTHERIODONTIA OLSON, 1962

SUBORDER: EOTITANOSUCHIA BOONSTRA, 1963

INFRAORDER: EOTITANOSUCHIA BOONSTRA, 1963

Family: EOTITANOSUCHIDAE CHUDINOV, 1960

Biarmosuchus tagax

_____________________________________________________________________________________


EUROPEAN RUSSIA

ARKHANGEL’SK REGION

LOWER MEZEN RIVER

ZONE III

LOWER TATARIAN AGE

LOPINGIAN SUBEPOCH

UPPER ZECHSTEIN EPOCH

LATE PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

NEOTETRAPODA

SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934

ORDER: SEYMOURIAMORPHA WATSON, 1917

SUBORDER: NYCTEROLETERIDAE TATARINOV, 1972

Family: NYCTEROLETERIDAE Romer, 1956

Subfamily: NYCTEROLECTERINAE Romer, 1956

*Nycteroleter ineptus

_____________________________________________________________________________________