SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

ORDER: EOSUCHIA BROOM, 1924

SUBORDER: AVICEPHALA SENTER, 2004

INFRAORDER: SIMIOSAURIA SENTER, 2004

Incertae sedis

Hypuronector limnaios

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: AVEMETATARSALIA BENTON, 1999

COHORT: PROLACERTIFORMES CAMP, 1945 NOVA

MAGNORDER: PROTOROSAURIA HUXLEY, 1871

SUPERORDER: TAPINOPLATIA PETERS EMEND NOVA

GRANDORDER: CHARACIOPODA PETERS EMEND NOVA

Family: TANYSTROPHEIDAE Geravis, 1858

Tanytrachelos ahynis