EUROPEAN RUSSIA

NIZHNII NOVGOROD REGION

GORKOVSKII GIDROUZEL

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: CHRONIOSUCHIDA TATARINOV, 1971

Family: CHRONIOSUCHIDAE Vjuschkov, 1957

Chroniosaurus levis

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EUROPEAN RUSSIA

NIZHNII NOVGOROD PROVINCE

SHAKHUN’YA DISTRICT

TOPMOST VYATSKIAN GORIZONT

LATE PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

SUPERORDER: THERASPIDA BROOM, 1905

GRANDORDER: EUTHERAPSIDA

MICRORDER: NEOTHERAPSIDA

ORDER: THERIODONTIA OWEN, 1881

EUTHERIODONTIA

SUBORDER: THEROCEPHALIA BROOM, 1903

Family: PRISTEROGNATHIDAE Broom, 1906

*Hexacynodon purlinensis

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EUROPEAN RUSSIA

NIZHNII NOVGORD PROVINCE

NIZHNII NOVGORD (OLD GORKI)

ON THE VYATKA

ZONE II

BELBEI SUTIE

EARLY PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: PARAREPTILIA OLSON 1947

INFRACLASS: SAUROPSIDA HUXLEY, 1864

SUPERORDER: EUREPTILIA OLSON, 1947

ORDER: CAPTORHINOMORPHA WATSON, 1917

SUBORDER: CAPTORHINOMORPHA WATSON, 1917

Family: CAPTORHINIDAE Case, 1911

Subfamily: MORADISAURINAE De Ricquiles et al. 1982

*Gecatogomphius kavejevi
= Hecatogomphius kavejevi

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