EASTERN EUROPEAN RUSSIA

VOLGA REGION

MARI E1 REPUBLIC

GORNOMARIYSKY DISTRICT

SUNDYR-1 LOCALITY

LOWER PUTYATINIAN REGIONAL SUBSTATE

TATARIAN SERIES

UPPER SEVERODVINIAN SUBSTAGE

SEVERODVINIAN HORIZON

LOWERMOST PART OF THE UPPER 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

NEOTHERAPSIDA RUBIDGE & SIDOR, 2001

INFRACLASS: THERIODONTIA EMEND OWEN, 1881

ORDER: EUTHERIODONTIA EMEND RUBIDGE & SIDOR, 2001

Family: LYCOSAURIDAE Broom, 1918

* Gorynychus sundyrensis

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EUROPEAN RUSSIA

VOLGA PROVINCE

VELIKOUSTYUGSKII DISTRICT

UST’E STREL’NY LOCALITY

PROELGINIA PERMIANA ZONE

UPPER 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: SEYMOURIDA TATARINOV, 1971

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

Family: KOTLASSIDAE Romer, 1933

Subfamily: KOTLASSIINAE Romer, 1933

Microphon exiguus

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

SUPERORDER: THERASPIDA BROOM, 1905

GRANDORDER: EUTHERAPSIDA

MICRORDER: NEOTHERAPSIDA

ORDER: THERIODONTIA OWEN, 1881

SUBORDER: GORGONOPIA SEELEY, 1895

Superfamily: GORGONOPIOIDEA Lydekker, 1890

Family: GORGONOPIDAE Lydekker, 1890

Subfamily: CYNARIOPINAE Watson & Romer, 1956

*Suchogorgon golubevi

INFRAORDER: ICTIDORHINIDA IVKHNENKO, 2003

Family: ICTIDORHINIDAE Broom, 1932

*Ustia atra

ORDER: ANOMODONTIA WATSON & ROMER, 1956

SUBORDER: DROMASAURIA BROOM, 1907

Superfamily: DROMASAURIDAE Broom, 1907

Family: GALEOPIDAE Broom, 1912

Suminia sp

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