CHINA

GUIZHOU PROVINCE

ANSHUN PREFECTURE

GUANLONG COUNTY

XIAOWA FORMATION

LATE LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1903

INFRACLASS: NEODIAPSIDA BENTON, 1985

ORDER: THALATTOSAURIDAE MERRIAM, 1904

SUBORDER: THALATTOSAUROIDEA MERRIAM, 1904

Family: THALATTOSAURIDAE Merriam, 1904

*Concavispina biseridens

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CHINA

GUIZHOU PROVINCE

GUANLING

FIRST MEMBER

WAYAO FORMATION

EARLY LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1903

NEODIAPSIDA: BENTON, 1985

LEPIDOSAUROMORPHA: BENTON 1985

SUPERORDER: SAUROPTERYGIA OWEN 1860

OR NEODIAPSIDA: INCERTAE SEDIS

ORDER: PLACODONTIA MEYER, 1863

Incertae sedis

*Sinocyamodus xinpuensis

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