EASTERN EUROPEAN RUSSIA

SAMARA PROVINCE (KUYBYSHEVSKAJA OBLAST)

SAMARA BASIN

ALEXEYEVKA DISTRICT

RIGHT BANK OF THE CHAPAYEVSKA RIVER

0.5 KM NE OF BORSHCHEVKA VILLAGE

BORSHEVSKOE

GOSTEVSKAYA SVITA

UST-MYLIAN GORIZONT

UPPER VETLUGAN SUPERGORIZONT

PPER BUNTSANDSTEIN

UPPERMIDDLE OLENKIAN STAGE

SCYTHIAN EPOCH

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: BENTHOSUCHIDAE Efremov, 1931

Subfamily: THOOSUCHINAE Getmanov, 1982

*Angusaurus succedaneus

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

SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990

COHORT: CROCODYLOTARSI BENTON & CLARK, 1988

MAGNORDER: SUCHIA KREBS, 1974

SUPERORDER: PSEUDOSUCHIA ZITTEL 1887-1890

GRANDORDER: RAUISUCHIFORMES PARRISH, 1993

ORDER: RAUISUCHIA Bonaparte, 1984

SUBORDER: RAUISUCHIA BONAPARTE, 1982

Family: TERATOSAURIDAE Cope 1871

Subfamily: TERATOSAURINAE Cope 1871

Tsylmosuchus sp

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