EUROPEAN RUSSIA

NIZHNII NOVGOROD PROVINCE

VETLUGA RIVER

SPASSKOE

VOKHMIAN GROIZONT

EARLY TRIASSIC

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: TUPILAKOSAURIDAE Kuhn, 1960

*Tupilakosaurus wetlugensis

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

NIZHNII NOVGOROD PROVINCE

ZUBOVSKOYE

RIGHT BANK OF VETLUGA RIVER

UPPER VETLUGA SERIES

EARLY TRIASSIC

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: TREMATOSAURIA PIVETEAU, 1955

Superfamily: TREMATOSAUROIDEA Save-Soderbergh, 1935

Family: WETLUGASAURIDAE Save-Soderbergh, 1935

*Wetlugasaurus angustifrons
= Capitosaurus angustifrons
= Parotosaurus angustifrons

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RUSSIA

NIZHNII NOVGORD PROVINCE

GOR’KIY OBLAST

SARAFANIKHA SITE

VETLUGA SERIES

EARLY TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: PARAREPTILIA OLSON 1947

INFRACLASS: SAUROPSIDA HUXLEY, 1864

ORDER: PROCOLOPHONOMORPHA ROMER, 1964

SUBORDER: PROCOLPHOMORPHA SEELEY, 1888

Family: PROCOLOPHONIDAE, Seeley, 1888

Subfamily: SPONDYLOESTINAE Ivakhenko, 1979

Contritosaurus simus

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RUSSIA

NIZHNII NOVGORD PROVINCE

GOR’KIY OBLAST

SPASSKOYE VILLAGE

BASE OF THE VETLUGA SERIES

EARLY TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: PARAREPTILIA OLSON 1947

INFRACLASS: SAUROPSIDA HUXLEY, 1864

ORDER: PROCOLOPHONOMORPHA ROMER, 1964

SUBORDER: PROCOLPHOMORPHA SEELEY, 1888

Family: PROCOLOPHONIDAE, Seeley, 1888

Subfamily: SPONDYLOESTINAE Ivakhenko, 1979

*Phaanthosaurus ignatjevi

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: AVEMETATARSALIA BENTON, 1999

COHORT: PROLACERTIFORMES CAMP, 1945 NOVA

MAGNORDER: PROTEROSUCHIFORMES nova

ORDER: PROTEROSUCHIA BROOM, 1906

Family: PROTEROSUCHIDAE Huene, 1914

Chasmatosuchus sp

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RUSSIA

NIZHNII NOVGORD PROVINCE

OLD GOR’KIY OBLAST

KRASNYYE BAKI VILLAGE

BASE OF VETLUGA SERIES

EARLY TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: PARAREPTILIA OLSON 1947

INFRACLASS: SAUROPSIDA HUXLEY, 1864

ORDER: PROCOLOPHONOMORPHA ROMER, 1964

SUBORDER: PROCOLPHOMORPHA SEELEY, 1888

Family: PROCOLOPHONIDAE, Seeley, 1888

Subfamily: SPONDYLOESTINAE Ivakhenko, 1979

*Contritosaurus convector

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RUSSIA

NIZHNII NOVGORD PROVINCE

GOR’KIY OBLAST

LIPOVO VILLAGE

BASE OF THE VETLUGA SERIES

EARLY TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: PARAREPTILIA OLSON 1947

INFRACLASS: SAUROPSIDA HUXLEY, 1864

ORDER: PROCOLOPHONOMORPHA ROMER, 1964

SUBORDER: PROCOLPHOMORPHA SEELEY, 1888

Family: PROCOLOPHONIDAE, Seeley, 1888

Subfamily: SPONDYLOESTINAE Ivakhenko, 1979

*Contritosaurus simus

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