NEVADA

PERSHING COUNTY

ON THE EASTERN FLANK OF THE HUMBOLDT RANGE

FOSSIL HILL

UNNAMED LOWER MEMBER

PRIDA FORMATION

STAR PEAK GROUP

LOWER MEMBER

SPATHIAN IN STAGE

UPPER SCYTHIAN EPOCH

LATE EARLY TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

Family: UTATSUSAURIDAE McGowan & Montani, 2003

cf. Utatsusaurus

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

GRIPPIDA MONTANI, 1999

cf. Grippiidae

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