MONGOLIA
28 KM W FROM NOYAN SOMAN
CANYON OF SAIN-SAR-BULAK SPRING
DALIN SHANDAKHUDUK FORMATION
EARLY TRIASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: SYNAPSIDA OSBORN, 1903
SUPERORDER: THERASPID BROOM, 1905
GRANDORDER: EUTHERAPSIDA
MICRORDER: NEOTHERAPSIDA
ORDER: ANOMODONTIA WATSON & ROMER, 1956
INFRAORDER: DICYNODONTIA OWEN, 1860
Superfamily: PRISTERODONTIA Cluver & King, 1983
Family: KANNEMEYERIDAE Huene, 1948
Subfamily: LYSTROSAURINAE Cope, 1870 (sensu Broom, 1903)
Lystrosaurus hedini
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