SOUTHERN EUROPEAN RUSSIA

BASHKORTOSTAN

BOLSHOY YUSHATYR’ RIVER

KOLTAYEVO

YUSHATARSK FORMATION

BUKOBAY SERIES

UPPER LADINIAN STAGE

UPPER MID TRIASSIC EPOCH

MIDDLE 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: CAPITOSAURIA ROMER, 1947

Superfamily: CAPITOSAUROIDEA Watson, 1919 (sensu Romer, 1947)

Family: MASTODONSAURIDAE Lydekker, 1885

*Mastodonsaurus torvus

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