Arctic Canada in the context of "Demographics of Canada"

Play Trivia Questions online!

or

Skip to study material about Arctic Canada in the context of "Demographics of Canada"

Ad spacer

⭐ Core Definition: Arctic Canada

Northern Canada (French: le Nord du Canada), colloquially the North or the Territories, is the vast northernmost region of Canada, variously defined by geography and politics. Politically, the term refers to the three territories of Canada: Yukon, Northwest Territories and Nunavut. This area covers about 48 per cent of Canada's total land area, but has less than 0.5 per cent of Canada's population.

The terms "northern Canada" or "the North" may be used in contrast with the far north, which may refer to the Canadian Arctic, the portion of Canada that lies north of the Arctic Circle, east of Alaska and west of Greenland. That said, in many other uses the two areas are treated as a single unit.

↓ Menu

>>>PUT SHARE BUTTONS HERE<<<
In this Dossier

Arctic Canada in the context of Tiktaalik

Tiktaalik (/tɪkˈtɑːlɪk/; Inuktitut: ᑎᒃᑖᓕᒃ [tiktaːlik]) is a monospecific genus of extinct sarcopterygian (lobe-finned fish) from the late Devonian Period, about 375 Mya (million years ago), having many features akin to those of tetrapods (four-legged animals). Tiktaalik is estimated to have had a total length of 1.25–2.75 metres (4.1–9.0 ft) on the basis of various specimens.

Unearthed in Arctic Canada, Tiktaalik is a non-tetrapod member of Osteichthyes (bony fish), complete with scales and gills—but it has a triangular, flattened head and unusual, cleaver-shaped fins. Its fins have thin ray bones for paddling like most fish, but they also have sturdy interior bones that would have allowed Tiktaalik to prop itself up in shallow water and use its limbs for support as most four-legged animals do. Those fins and other mixed characteristics mark Tiktaalik as a crucial transition fossil, a link in evolution from swimming fish to four-legged vertebrates. This and similar animals might be the common ancestors of all vertebrate terrestrial fauna: amphibians, reptiles, birds and mammals.

↑ Return to Menu