However, similarities between the dental morphology of Nuralagus and Eurasian members of the extinct genus Alilepus have led to speculation that Alilepus is closely related to and, possibly, the ancestor of Nuralagus. The only other mammal native to Menorca during the Pliocene was the extinct giant dormouse species Muscardinus cyclopeus, which belongs to the same genus as the living hazel dormouse, with a herpetofauna including the giant tortoise Solitudo gymnesica, snakes, amphisbaenian, lacertid and gekkonid lizards, and alytid frogs.
However, similarities between the dental anatomy of Nuralagus and Eurasian members of the extinct genus Alilepus have led to speculation that Alilepus is closely related to and, possibly, the progenitor of Nuralagus. The only other mammal native to Menorca during the Pliocene was the extinct giant dormouse species Muscardinus cyclopeus, which belongs to the same genus as the living hazel dormouse, with a herpetofauna including the giant tortoise Solitudo gymnesica, snakes, amphisbaenians, lacertid and gekkonid lizards, and alytid frogs.