EGYPT

SINAI PENINSULA

ARAIF EN NAQA

LOWER CERATITES BEDS

ANISIAN STAGE

LOWER MID TRIASSIC EPOCH

MIDDLE 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

SUBORDER: CYMODONTOIDEA NOPCSA, 1923

Superfamily: PLACOCHELYIDA Romer, 1956

Family: PLACOCHELYIDAE Jaekel, 1907

*Psephosauriscus sinaiticus
= Psephosaurus ? sinaiticus
CF. *Psephosauriscus rhombifer
= Psephosaurus (?) rhombifer

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