CANADA
NORTHWEST TERRITORY
QUEEN ELIZABETH ISLANDS
ARCTIC
BYLOT ISLAND
MIDDLE MAASTRICHTIAN STAGE
UPPER SENONIAN SUBEPOCH
UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AVES LINNAEUS, 1758
AVEBREVICAUDA PAUL, 2001
SUBCLASS: ODONTORNITHES MARSH, 1873
INFRACLASS: ODONTOHOLCAE NOVA
MAGNORDER: HESPERORNITHES
ORDER: HESPERORNITHIFORMES FURBRINGER, 1888
Family: HESPERORNITHIDAE Marsh, 1872
Subfamily: HESPERORNITHINAE Nova
*Canadaga arctica
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CANADA
NORTHWEST TERRITORY
QUEEN ELIZABETH ISLANDS
ARCTIC
BYLOT ISLAND
KANGUK FORMATION
MAASTRICHTIAN STAGE
UPPER SENONIAN SUBEPOCH
UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AVES LINNAEUS, 1758
AVEBREVICAUDA PAUL, 2001
SUBCLASS: ODONTORNITHES MARSH, 1873
INFRACLASS: ODONTOHOLCAE NOVA
MAGNORDER: HESPERORNITHES
ORDER: HESPERORNITHIFORMES FURBRINGER, 1888
Family: HESPERORNITHIDAE Marsh, 1872
Subfamily: HESPERORNITHINAE Nova
Hesperornis sp
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CANADA
NORTHWEST TERRITORY
NEAR THE HEADWATERS OF EAST LITTLE BEAR RIVER
SUMMIT CREEK FORMATION
MAASTRICHTIAN STAGE
UPPER SENONIAN SUBEPOCH
UPPER 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: NEORNITHISCHIA COOPER, 1985
GRANDORDER: ORNITHOPODA MARSH, 1871
MICRORDER: MARGINOCEPHALIA SERENO, 1986
ORDER: CERATOPIA MARSH, 1890
SUBORDER: NEOCERATOPIA SERENO, 1986
INFRAORDER: CORONOSAURIA SERENO, 1986
PARVORDER: CERATOPOMORPHA Wolfe & Kirkland, 1998 (emend)
Superfamily: CERATOPOIDEA Marsh, 1888 (sensu Hay, 1902)
Family: CERATOPIDAE Marsh, 1888
Incertae sedis
Gen. sp indet.
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QUEEN ELIZABETH ISLANDS
CANADIAN ARTIC
NORTHERN TERRITORY
QUEEN ELIZABETH ISLANDS
AXEL HEIBERG ISLAND
SVERDRUP BASIN
KANGUK FORMATION
MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
UPPER UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: CHELONOMORPHA KUHN, 1960
SUPERCOHORT: TESTUDINES LINNAEUS, 1758
COHORT: CASICHELYDIA emend GAFFNEY & MEYLAN, 1988
MAGANORDER: CRYPTODIRA GAFFNEY & MEYLAN, 1988
Gen. sp indet.
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CANADIAN ARTIC
NORTHERN TERRITORY
QUEEN ELIZABETH ISLANDS
AXEL HEIBERG ISLAND
SVERDRUP BASIN
KANGUK FORMATION
MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
UPPER UPPER 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
SUPERCOHORT CHORISTODERA NOVA
ORDER: CHORISTODERA COPE, 1876
Family: CHAMPSOSAURIDAE Cope, 1884
Incertae sedis
Gen. sp indet.
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