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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