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Northern timber wolf11/7/2023 ![]() Northwestern wolves are one of the largest subspecies of wolves. occidentalis is the most widespread member of the four gray wolf subspecies in North America, with at least six different synonyms. nubilus populations as it advanced, a process which has continued until present times. It likely crossed into North America through the Bering land bridge after the last ice age, displacing C. occidentalis, the most northwestern subspecies, is descended from the last gray wolves to colonize North America. baileyi, each one representing a separate invasion into North America from distinct Eurasian ancestors. Īccording to one source, phylogenetic analyses of North American gray wolves show that there are three clades corresponding to C. He chose to give it the name occidentalis in reference to its geographic location rather than label it by its color, as it was too variable to warrant such. The subspecies was first written of by Scottish naturalist Sir John Richardson in 1829. This wolf is recognized as a subspecies of Canis lupus in the taxonomic authority Mammal Species of the World (2005). Arguably the largest gray wolf subspecies in the world, it ranges from Alaska, the upper Mackenzie River Valley southward throughout the western Canadian provinces, aside from prairie landscapes in its southern portions, as well as the Northwestern United States. The northwestern wolf ( Canis lupus occidentalis), also known as the Mackenzie Valley wolf, Alaskan timber wolf, or Canadian timber wolf, is a subspecies of gray wolf in western North America.
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