EUROPEAN RUSSIA

VOLGA PROVINCE

NYUKSENITSA DISTRICT

NAVOLOKI LOCALITY

RIGHT BANK OF SUKHONA RIVER

NORTHERN DVINA HORIZON

POLDARSA FORMATION

TATARIAN SERIES

UPPER SEVERODVINIAN SUBSTAGE

SEVERODVINIAN HORIZON (SUKHONIAN SUITE)

SOKOLKI FAUNAL ASSEMBLAGE

ILINSKOE FAUNAL SUBASSEMBLAGE

UPPER TATARIAN AGE

LOPINGIAN SUBEPOCH

UPPER ZECHSTEIN EPOCH

LATE PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

SUBCLASS: LABYRINTHODONTIA OWEN, 1860

SUPERORDER: TEMNOSPONDYLIA ZITTEL, 1887

MICROORDER: LIMNARCHIA YATES & WARREN, 2000

ORDER: DVINOSAURIA YATES & WARREN, 2000

INFRAORDER: TRIMERORHACHOIDA ROMER, 1947

Superfamily: DVINOSAUROIDEA Watson, 1919

Family: DVINOSAURIDAE Amalitzky, 1921

Dvinosaurus sp

NEOTETRAPODA

SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934

ORDER: SEYMOURIAMORPHA WATSON, 1917

SUBORDER: SEYMOURIDA TATARINOV, 1971

Superfamily: KOTLASSOIDEA Romer, 1933 (sensu Vjuschkov, 1957)

Family: KOTLASSIDAE Romer, 1933

Subfamily: KOTLASSIINAE Romer, 1933

Microphon exiguus

SUBORDER: CHRONIOSUCHIDA TATARINOV, 1971

Family: CHRONIOSUCHIDAE Vjuschkov, 1957

Chroniosaurus donguensis

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

INFRACLASS DINOMORPHA IVAKNENKO, 2008

SUPERORDER: GORGONTIA IVAKNENKO, 2008

ORDER: GORGONOPSIA SEELEY, 1895

SUBORDER: GORGONOPIA SEELEY, 1895

Superfamily: GORGONOPIOIDEA Lydekker, 1890

Family: Incertae sedis

Gen. sp indet.

SUBORDER: ESTEMMENOSUCHOIDEA IVENKNENKOV, 2003

Superfamily: BURNETIOIDEA Broom, 1923

Family: BURNETIIDAE Broom, 1923

Subfamily: BURNETIINAE Broom, 1923

*Niuksenitia sukhonensis

NEOTHERAPSIDA RUBIDGE & SIDOR, 2001

SUPERORDER: ANOMODONTIA WATSON & ROMER, 1956

ORDER: DROMASAURIA BROOM, 1907

Family: GALEOPIDAE Broom, 1912

Suminia cf. getmanovi