NORTHEASTERN LANE COUNTY
JUST ABOVE HATTIN'S (1982) MARKER UNIT 7
SMOKY HILL CHALK
NIOBRARA CHALK
CLIOSCAPHITES VERMIFORMIS AND C. CHOTEAUENSIS ZONES
MIDDLE SANTONIAN STAGE
LOWER SENONIAN SUBEPOCH
LOWER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985
INFRALEGION: DINOSAURIFORMES NOVAS, 1992
SUPERCOHORT: DINOSAURIA OWEN, 1842
COHORT: ORNITHISCHIFORMES COOPER, 1985
MAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: EURYOPDA SERENO, 1986
GRANDORDER: ARMATOSAURIA ZHAO, 1983 (emend)
ORDER: ANKYLOSAURIA OSBORN, 1923
SUBORDER: SCELIDOSAURIA COOPER, 1985
INFRAORDER: ANKYLOSAURA OSBORN, 1923
Family: NODOSAURIDAE Marsh, 1890
Niobrarasaurus coleii
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