EUROPEAN RUSSIA
VOLOGDA REGION
UST-E STRELNY LOCALITY
POLDARSKAYA FROMATION
STREL'NA MEMBER
SEVERODVINSKIAN GORIZONT
UPPER TATARIAN AGE
LOPINGIAN SUBEPOCH
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 exiguous
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EUROPEAN RUSSIA
VOLOGDA REGION
POTERYAKHA 1 LOCALITY
PROELGINIA PERMIANA ZONE
POLDARSA FORMATION
UPPER TATARIAN AGE
LOPINGIAN SUBEPOCH
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
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EUROPEAN RUSSIA
VOLOGDA REGION
POTERYAKHA 2 LOCALITY
PROELGINIA PERMIANA ZONE
POLDARSA FORMATION
UPPER TATARIAN AGE
LOPINGIAN SUBEPOCH
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
SUBORDER: CHRONIOSUCHIDA TATARINOV, 1971
Family: CHRONIOSUCHIDAE Vjuschkov, 1957
Chroniosaurus dongusensis
= Jugosuchus boreus (partim)
= Jugosuchus hartmanni (partim)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 sp
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EUROPEAN RUSSIA
VOLGDA PROVINCE
SUKHONA RIVER BASIN
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 primus
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