Tiktaalik, a lobe-finned fish from the late Devonian period, discovered in 2004 in Nunavut, Canada. Tiktaalik is significant in that its fins display some of the earliest examples of basic wrist bone structure and rays which may represent an early form of digits. [3,171 × 1,494]

Tiktaalik, a lobe-finned fish from the late Devonian period, discovered in 2004 in Nunavut, Canada. Tiktaalik is significant in that … More