Canis armbrusteri may have evolved from C. chihliensis in Asia (Tedford, Wang, 182). C. armbrusteri first appears in the Early Pleistocene (Irvingtonian) in ШУУД ҮЗНХ and
Canis armbrusteri may have evolved from C. chihliensis in Asia (Tedford, Wang, 182). C. armbrusteri first appears in the Early Pleistocene (Irvingtonian) in the southwestern United States. Remains are often found within the rock strata containing mammoth. C. dirus, the dire wolf, is thought to have evolved from C. armbrusteri in North America. C. armbrusteri was displaced in the middle section of the continent by the dire wolf, with C. armbrusteri pushed southeastward until the Late Pleistocene (Rancholabrean stage) in Florida Canis armbrusteri was named by J. W. Gidley in 1913. The first fossils were uncovered at Cumberland Bone Cave, Maryland, in an Irvingtonian terrestrial horizon. Fossil distribution is widespread throughout the U.S. Armbruster's wolf is considered a sister species of the dire wolf, one of the most recent evolutionary relatives of the modern wolf, differing from the gray wolf and dire wolf by a narrower skull. It is considered to be the closest relative to Canis falconeri.
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