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