JAPAN

HONSHU ISLAND

FUKUSHIMA PREFECTURE

NEAR YANAIZU

ISHIHU

SPATHIAN STAGE

UPPER SCYTHIAN EPOCH TO LOWER ANISIAN STAGE

LOWER MID TRIASSIC EPOCH

MIDDLE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

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

Incertae sedis

*Metanothosaurus nipponicus

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