UTAH

GARFIELD COUNTY

OMNH LOCALITY V856

JOHN HENRY MEMBER

STRAIGHT CLIFFS FORMATION

LOWER OR MIDDLE CONIACIAN STAGE

LOWEST SENONIAN SUBEPOCH

LOWER GULF EPOCH

EARLY LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: MAMMALIA LINNAEUS, 1758

SUBCLASS: PROTOTHERIA GILL, 1872

INFRACLASS: HOLOTHERIA (WIBEL, ROUGIER, NOVACEK, MCKENNA & DASHZEVEG, 1995) MCKENNA & BELL, 1997

SUPERLEGION: SYMMETRODONTA (SIMPSON, 1925) McKENNA & BELL, 1997

LEGION: SYMMETRODONTA SIMPSON, 1925

ORDER: SPALACOTHERIIDA PROTHERO, 1981

Family: SPALACOTHERIIDAE Marsh, 1887

Subfamily: SPALACOLESTINAE Cifelli & Madsen, 1999

Symmeterodontoides sp. cf. S. oligodontos

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