Where Do Rodents Fit? Evidence from the Complete Mitochondrial Genome of Sciurus vulgaris

Abstract
Nowadays, the order Rodentia represents almost half of all living mammalian species, classified into 30–33 families (Hartenberger 1998 ), and shows high levels of variability in morphology, habitat utilization, behavior, life history strategy, and geographic distribution (Eisenberg 1981 ; Wilson and Reeder 1993 ).