EUROPEAN RUSSIA
BASHKIRIAN REPUBLIC (BASHKORTOSTAN)
KIURGAZINSK DISTRICT
MURAPTALOVO
STARETSK OR KZYLSAYSK BEDS
SLUDKIAN HORIZON
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: BENTHOSUCHIDAE Efremov, 1931
Incertae sedis