SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1903

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: HUENEOSAURIA MAISCH & MATZKE, 2000

ORDER: MIXOSAUROIDEA (BAUR, 1887)

Incertate sedis

Mixosaurus helveticus

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: CHELONOMORPHA KUHN, 1960

SUPERCOHORT: TESTUDINES LINNAEUS, 1758

ORDER: PROGANOCHELYDIDA ROMER, 1966

Family: PROGANOCHELYDIDAE Baur, 1887

Proganochelys sp

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ROMIANA

BIHOR COUNTY

ORASUL ALESD

MIDDLE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: NOTHOSAURIFORMES STORRS, 1991

SUBORDER: EUSAUROPTERYGIA TSCHANZ, 1989

INFRAORDER: NOTHOSAUROIDEA BAUR, 1889

Superfamily: NOTHOSAURIA Baur, 1889

Family: NOTHOSAURIDAE Baur, 1889

*Nothosaurus transsylvanicus