EAST EUROPEAN RUSSIA

VOLOGODSKA OBLAST

NIKOL’SKIJ RAJON

A LEFT TRIBUTARY OF THE YUG

BANKS OF SHARZHENGA RIVER

RYBINSKIAN HORIZON

VETLUGA SERIES

OLENEKIAN STAGE?

UPPER 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: BENTHOSUCHINAE Efremov, 1931 (sensu Efremov, 1937)

* Benthosuchus sushkini
= Benthosaurus sushkini