CANADA
ARTIC ARCHIPELAGO
NW EXTREMITY OF CAMERON ISLAND
HEIBERG FORMATION
LATE TRIASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
Incertae sedis
*Arctosaurus osborni
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