At Ease

by Barbara Keith

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Dimensions

12.000 x 18.000 inches

Title

At Ease

Artist

Barbara Keith

Medium

Drawing - Colored Pencil

Description

The evolution of the wolf occurred over a geologic time scale of at least 300 thousand years. The gray wolf Canis lupus is a highly adaptable species that is able to exist in a range of environments and which possesses a wide distribution across the Holarctic. Studies of modern gray wolves have identified distinct sub-populations that live in close proximity to each other. This variation in sub-populations is closely linked to differences in habitat - precipitation, temperature, vegetation, and prey specialization - which affect cranio-dental plasticity.
The archaeological and paleontological records show gray wolf continuous presence for at least the last 300,000 years. This continuous presence contrasts with genomic analyses, which suggest that all modern wolves and dogs descend from a common ancestral wolf population that existed as recently as 20,000 years ago. These analyses indicate a population bottleneck, followed by a rapid radiation from an ancestral population at a time during, or just after, the Last Glacial Maximum. However, the geographic origin of this radiation is not known (Wikipedia).

Complete 1996, no further information available.

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July 30th, 2018

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