NORTHWEST CHINA

NORTHWESTERN KANSU (GANSU) PROVINCE

HONGYANJIANG FORMATION

EQUIVALENT TO THE CYNOGNATHUS ZONE

SPATHIAN STAGE

UPPERMOST SCYTHIAN EPOCH TO ANISIAN STAGE

LOWERMOST MID TRIASSIC EPOCH

EARLY TO MIDDLE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

SUBCLASS: LABYRINTHODONTIA OWEN, 1860

SUPERORDER: TEMNOSPONDYLIA ZITTEL, 1887

MICROORDER: EUSKELIA YATES & WARREN, 2000

ORDER: EYROPODIA

Superfamily: DISSOROPHOIDEA Boulenger, 1902 (sensu Bolt, 1969)

Family: BRANCHIOSAURIDAE Fritsch, 1883

Genus: Nova

SUBCLASS: LEPOSPONDYLI ZITTEL, 1888

ORDER: MICROSAURIA DAWSON, 1863

Genus: Nova (2 genera)

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

SUPERORDER: THERASPIDA BROOM, 1905

GRANDORDER: EUTHERAPSIDA

MICRORDER: NEOTHERAPSIDA

ORDER: THERIODONTIA OWEN, 1881

EUTHERIODONTIA

SUBORDER: CYNODONTIA OWEN, 1860

EPICYNODONTIA HOPSON & KITCHING, 2001

INFRAORDER: EUCYNODONTIA

MAMMALIAMORPHA ROWE, 1988

Superfamily: TRITYLODONTIA Cope, 1884 (sensu Kuhne, 1943)

Family: TRIRACHODONTIDAE Crompton, 1955

Genus: Nova

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