EUROPEAN RUSSIA

VOLGA-URAL ANTICLINE

KOBRA RIVER

TERYUKHAI

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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EUROPEAN RUSSIA

VOLGO-URALS ANTICLINE

KRASNAYA YARUNGA

RYBINSKIAN HORIZON

MIDDLE VETULGIAN SUPERHORIZON

LOWER OLENEKIAN STAGE

UPPER 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

Dromotectum spinosum

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EUROPEAN RUSSIA

VOLGA-URAL ANTICLINE

LUZA RIVER

KORZHINSKOYE

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

CLASS: REPTILIA LAURENTI, 1768

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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EUROPEAN RUSSIA

VOLGO-URALS ANTICLINE

MECHET-1 LOCALITY

RYBINSKIAN HORIZON

MIDDLE VETULGIAN SUPERHORIZON

LOWER OLENEKIAN STAGE

UPPER 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

Dromotectum spinosum

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