EUROPEAN RUSSIA
MARI EL REPUBLIC
GORNOMARIISKII DISTRICT
DIRECTLY DOWNSTREAM FROM THE MOUTH OF THE SUNDRY RIVER
RIGHT BANK OF THE VOLGA RIVER (SOUTHERN SHORE OF THE CHEBOKSARY RESERVOIR)
SUNDRY-1 LOCALITY
SUNDYR ASSEMBLAGE
LATEST DINOCEPHALIAN SUPERASSEMBLAGE
LATE TITANOPHONEUS TETRAPOD ZONE
LOWER UPPER SUBSTAGE
LOWER UPPER SEVERODVINIAN STAGE
LOWER TATARIAN SERIES
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 gubin
= Dvinosaurus cf. primusNEOTETRAPODA
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: ENOSUCHIDAE Konzukova, 1955
Enosuchus cf. breviceps
*Enosuchus alveolatusSubfamily: LEPTOROPHINAE Ivakhenko, 1988
Leptoropha sp
Subfamily: KOTLASSIINAE Romer, 1933
Microphon exiguous
SUBORDER: CHRONIOSUCHIDA TATARINOV, 1971
Family: CHRONIOSUCHIDAE Vjuschkov, 1957
Suchonica vladimiri
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