Genetic diversity, phylogeography, and sexual dimorphism in the extinct giant short-faced bear (Arctodus simus)

In this study, researchers sequenced 31 mitochondrial genomes of the extinct Arctodus simus, the giant short-faced bear of Ice Age North America. The findings revealed low genetic diversity, no distinct regional lineages, and that size differences were likely due to sexual dimorphism—not separate subspecies.

We’re proud our tools contributed to this deeper understanding of one of Pleistocene America’s most iconic megafauna.