EUROPEAN RUSSIA
BOLSHOE ANISIMOVO LOCALITY
VOKHMAIN HORIZON
LOWEST VETULGIAN SUPERHORIZON
INDUAN STAGE
SCYTHIAN EPOCH
EARLY TRIASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
NEOTETRAPODA
SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934
ORDER: SEYMOURIAMORPHA WATSON, 1917
SUBORDER: CHRONIOSUCHIDA TATARINOV, 1971
Family: BYSTROWIANIDAE Vjushkov, 1957
Axitectum vjushkovi
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EUROPEAN RUSSIA
PEREVOZINKA LOCALITY
VOKHMAIN HORIZON
LOWEST VETULGIAN SUPERHORIZON
INDUAN STAGE
SCYTHIAN EPOCH
EARLY TRIASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
NEOTETRAPODA
SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934
ORDER: SEYMOURIAMORPHA WATSON, 1917
SUBORDER: CHRONIOSUCHIDA TATARINOV, 1971
Family: BYSTROWIANIDAE Vjushkov, 1957
Axitectum vjushkovi
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EUROPEAN RUSSIA
KARASNOYARSK REGION
TAIMYR AUTOMOUS AREA
EASTER TAIMYR
BELOW THE MOUTH OF THE OSTANTSOVSKAYA RIVER ON THE RIGHT BANK OF THE CHERNOKHREBETNAYA RIVER
OSTANTSOVSKAYA FORMATION
OLENEKITES PINIPLICATUS ZONE
UPPER SUBSTAGE OF THE OLENEKIAN STAGE
LOWER SCYTHIAN EPOCH
EARLY TRIASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
INFRACLASS: EURYAPSIDA COLBERT, 1945
SUPERORDER: SAUROPTERYGIA OWEN 1860
GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994
ORDER: NOTHOSAURIFORMES STORRS, 1991
SUBORDER: EUSAUROPTERYGIA TSCHANZ, 1989
INFRAORDER: PISTOSAUROIDEA BAUR, 1887-90
Superfamily: PISTOSAUROIDEA Baur in Zittel, 1887-1890 (Edinger, 1935)
Family: PISTOSAURIDAE Baur in Zittel, 1887-1890
Pistosaurus sp
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