The black-tailed jackrabbit coexists with the antelope jackrabbit and the two species maintain a sympatric relationship. giganteus served as a common ancestor to the antelope jackrabbit and black-tailed jackrabbit. In a 2014 study, researchers hypothesized that L.
This species shared similar physical traits with the antelope jackrabbit, making it difficult to differentiate fossils of the two species. A now extinct jackrabbit species, Lepus giganteus, was thought to exist in North America during this time. Evolutionary historyįossil evidence places the genus Lepus in North America approximately 2.5 million years ago. It is most active during twilight ( crepuscular) and during the night ( nocturnal), but can be active during the day when conditions are favorable (heavy cloud coverage).
The antelope jackrabbit ( Lepus alleni) is a species of North American hare found in southern Arizona and northwestern Mexico that occupies dry desert areas.
