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
_____________________________________________________________________________________
NEVADA
PERSHING COUNTY
S TOBIN RANGE
FAVRET CANYON
FOX HILLS MEMBER
FAVRET FORMATION
MIDDLE 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
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
MICRORDER: HUENEOSAURIA MAISCH & MATZKE, 2000
ORDER: MIXOSAUROIDEA (BAUR, 1887)
Family: MIXOSAURIDAE Baur, 1887
Mixosaurus sp
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NEVADAPERSHING COUNTY
WEST HUMBOLDT RANGE
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
Family: OMPHALOSAURIDAE Merriam, 1906
Omphalosaurus sp
NEVADA
PERSHING COUNTY
WEST HUMBOLDT RANGE
SOUTH FORK OF AMERICAN CANYON
CYMBOSPONDYLUS BEDS
ANISIAN STAGE
LOWER MIDDLE 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
Family: OMPHALOSAURIDAE Merriam, 1906
*Omphalosaurus nevadanus
_____________________________________________________________________________________
NEVADA
PERSHING COUNTY
WEST HUMBOLDT RANGE
AMERICAN CANYON
CYMBOSPONDYLUS BEDS
ANISIAN STAGE
LOWER MIDDLE TRIASSIC EPOCH
MIDDLE 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
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
Family: CYMBOSPONDYLIDAE Huene, 1948
Cymbospondylus petrinus
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NEVADA
PERSHING COUNTY
AUGUSTA MOUNTAINS
NORHTERN SLOPE OF THE REAR OF FAVERET CANYON
UPPER THIRD OF FOSSIL HILL MEMBER
FAVRET FORMATION
ROTELIFFORMES OR MEEKI ZONES
ANISIAN STAGE
LOWER MIDDLE TRIASSIC EPOCH
MIDDLE 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
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
Family: CYMBOSPONDYLIDAE Huene, 1948
*Cymbospondylus duelferi
_____________________________________________________________________________________
NEVADA
PERSHING COUNTY
BETWEEN COYOTE CANYON AND BLODDY CANYON
LOWER MEMBER
PRIDA FORMATION
PROHUNGARITES AND SUBCOLUMBITES ZONES
SPATHIAN STAGE
UPPERMOST SCYTHIAN EPOCH
LATE EARLY 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
Family: OMPHALOSAURIDAE Merriam, 1906
*Omphalosaurus nettarhynchus
_____________________________________________________________________________________
NEVADA
PERSHING COUNTY
AUGUSTA MOUNTAINS
NORTH BRANCH OF THE CANYON SOUTH OF FAVRET CANYON, INFORMALLY KNOWN AS MULLER CANYON
FOSSIL HILL MEMBER
FAVRET FORMATION
ANISIAN STAGE
LOWER MID TRIASSIC EPOCH
MIDDLE 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
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
MICRORDER: HUENEOSAURIA MAISCH & MATZKE, 2000
ORDER: MIXOSAUROIDEA (BAUR, 1887)
Family: MIXOSAURIDAE Baur, 1887
*Mixosaurus callawayi
_____________________________________________________________________________________
NEVADA
PERSHING COUNTY
FAVRET CANYON
FAVERT FORMATION
MIDDLE 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
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
MICRORDER: HUENEOSAURIA MAISCH & MATZKE, 2000
ORDER: MIXOSAUROIDEA (BAUR, 1887)
Family: MIXOSAURIDAE Baur, 1887
Subfamily: PHALARODONTINAE Maisch & Matzke, 2001
Phalarodon nordenskioldii = Cymbospondylus (?) natans
= Mixosaurus natans
NEVADA
PERSHING COUNTY
AUGUSTA MOUNTAINS
EXACT LOCALITY ON FILE AT THE FMNH
FOSSIL HILL MEMBER
FAVRET FORMATION
ANISIAN STAGE
LOWER MID TRIASSIC EPOCH
LOWER MIDDLE 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
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
Family: CYMBOSPONDYLIDAE Huene, 1948
*Cymbospondylus nichollsi
_____________________________________________________________________________________
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